plate tectonics Crossword Puzzles

13 Clues: Lithospheric plate • Lava under the earth • Human caused disaster • Extreme scarcity of food • Scale used to measure earthquakes • The solid outer part of the earth. • An instrument designed to measure earthquakes • A collapse of a mass of earth or rock from a mountain • Cyclone formed in North Queensland during 2011 floods • ...

21 Clues: pulls rock apart • place within earth • center of our planet • when 2 plates collide • lower part of the mantle • Liquid layer of earths crust • rock layers bend under stress • the outer most layer of earth • a layer of weak or soft mantle • All the continents put together • magnetic patterns of sea floor rock • Where 2 or more tectonic plates meet • ...

20 Clues: also known as plants • type of climate in the Andes • tallest waterfall in the world • type of crop grown in the Pampas • region in which you can find the Andes • grassland region in northern S. America • type of crop grown in the Llanos region • stretches 5,500 miles through S. America • main vegetation of the Llanos and Pampas • rich soil and grassy region in Argentina • ...

20 Clues: The size of an earthquake • This rock is formed by erosion • Two plates move toward each other • Two plates move away from each other • Magma that erupts onto earth's surface • This rock is formed by heat and pressure • The crust and uppermost part of the mantle • Molten rock stored beneath earth's surface • The partially melted portion of the mantle • ...

16 Clues: The moving of the continent • A elevated area that spews lava • when two tectonic plates collide • What was before the continents split up • when two tectonic plates move away from each other • when two plates slide past each other, horizontally • slab pull is a part of the motion of a tectonic plate • a change of the earth's magnetic field to the opposite • ...

10 Clues: Forms where two plates seperate • magnetic field reverses directions • the cold and ridge outermost rock layers are called • continents were once part of a supercontinent called • The mountain range in the middle of the ocean are called • continents are in constant motion on the surface of earth • polarity, reverse direction and orient themselves and point south • ...

10 Clues: split in the earth • plate made of ocean • dividing/moving away • slide past each other • plate made of continent • magma creating new crust • molten rock in the earth • colliding/coming together • a shake or rupture in the earth • denser plate under less dense one

10 Clues: When the Earth shakes. • A large powerful wave. • Mountain that spews lava. • When 2 plates come together. • The outer layer of the Earth. • What is the crust broken into? • What pushes up forming new crust? • When 2 plates slide past each other. • When 2 plates move away from each other. • All the continents pushed together as one whole.

10 Clues: pieces part of land • is caused by plate movement • boundary creates earthquakes • layer of earth below the crust • material found inside a volcano • part of earth; broken into pieces • boundary creates folded mountains • boundary creates sea floor spreading • dark, dense rock found in ocean floor • type of valley that are an example of divergent boundary

10 Clues: A big crack in the Lithosphere • big wave created by earthquake • the theory that continents move • gigantic chunks of the Lithosphere • Molten rock that is inside the earth • a boundary were plates are pushed apart • small earthquakes that occur after big ones • a continent that was split up a long time ago • a boundary were the plates are pushed together • ...

10 Clues: The outermost layer of the earth. • What is in the center of the earth? • The material that makes up the mantle. • The type of crust that is denser and will subduct. • The long, narrow depression found at subduction zone. • The type of plate boundary that plates move towards each other. • What is magma called once it has reached the surface of the earth? • ...

10 Clues: upper mantle and crust • all rocks and minerals • reason that the plates move • when two plates come together • when one plate sinks under another • Basalt 3-5 miles thick, very dense • Granite 25 miles thick, less dense • when two plates push up and form magma • largest layer of earth, 1800 miles thick • magma plume rises and burns a hole in plate

10 Clues: what spits lava • what boundary moves apart • what boundary comes together • who thought of continental drift • whats another name for earths crust • what is another name for the mantle • what boundary slides past each other • best example for a transform boundary • what is it called when rocks change lots • whats it called when a plate goes under another plate

10 Clues: limestone is made mostly of _____ • large pieces of Earth's crust and mantle • proposed the theory of the continental drift • ____ and volcanoes occur between boundary plates • has the properties of a solid but can flow slowly • Limestone is a major ingredient in what household item? • are driven by the decay of radioactive material in the Earth • ...

10 Clues: a split or break • What is created during subduction • Molten rock beneath Earth's surface • When two plates slide past each other • how many types of boundaries are there • When two plates move towards each other • A landform caused by transform boundaries • When two plates move away from each other • One of the landforms caused by convergent boundaries • ...

10 Clues: _ can create islands. • The layer of the Earth in which convection currents occur. • _ is when a more dense plate "dives" below a less dense plate. • Which plate boundary are mountains & ocean trenches most likely to form? • _ rocks are found closer to ocean ridges, and old rocks are further away. • ...

10 Clues: molten rock • a type of boundary where two tectonic plates collide • a process in which warmer material rises, cools, and sinks. • plates the plates that the crust of the Earth is divided into • a type of boundary where two tectonic plates move against each other • a process where thinner oceanic crust gets pulled underneath the thicker crust • ...

10 Clues: molten rock • slide past each other • come together or overlap • shaking of the Earth's surface • the edges where two plates meet • moving away in opposite directions • pieces of Earth's crust and uppermost mantle • the plate with more dense goes under the less dense plate • when new magma is coming up and filling the gap left by dividing plates. it happens on ocean floor • ...

10 Clues: the collision of two plates. • two plates that move apart or rift. • two plates that are sliding past eachother. • when the denser ocean subducts under the other one. • when the material pushes upward after the collision of two plates. • drift the gradual movement as the continents drift apart over time. • ...

10 Clues: _____tectonics • Plates sliding • plates colliding • Plates separating • ____is hot molten rock • The second layer of the earth • _____ current found in the mantle • Caused by Transform Plate boundary's • Caused by Divergent plate boundary's • ______ is caused by different density in convergent plate boundary

10 Clues: what plate moves apart • what makes plate boundaries move • a feature of convergent boundary • this is made by transform boundary • what occurs in divergent boundaries • what plate moves towards each other • a divergent boundary forms this feature • what plate slides across from each other • this forms as the plate jam together and release suddenly • ...

10 Clues: melted rocks • 2 plates slide past each other • where do most earthquakes occur? • 2 plates overlap or come together • what causes tectonic plates to move? • valleys that occur at divergent boundaries • what feature does a divergent-boundary cause? • what happens when 2 plates slide back and forth • when the ocean floor folds under a tectonic plate • ...

10 Clues: Objects spreading apart • An edible, customizable food • The inventor of Continental Drift • An object that has gone under another • Continents colliding and pushing upward • The mass of an object compared to it's size • A very cute, giant rodent that bites Do Not Pet • An object you put over your eyes during a sauna • When a car suddenly turns into an evil-fighting robot • ...

10 Clues: ______plates • mid ocean ridges and • result in different heating • things that shift the ground • two plates converge and overlap • two plates slide past each other • tectonic plates descending under another • convection currents in the molten rock or • two tectonic plates moving away from each other • ridge system located in the middle of an ocean basin .

10 Clues: are the borders between two plates • is your stated opinion on something • is what you can give to someone to help • is a long narrow excavation in the ground • the center of earth inside the outer core • is a very hot liquid that comes out of volcanoes • a big section of water that takes up most of earth • are things that move on earth and cause earthquakes • ...

10 Clues: Plates that are the crust • A mountain that spews lava • When a plate goes under another • A tectonic plate that is under the ocean • A tectonic plate that is under a continent • A boundary where the plates are moving apart • What happens when two plates rub against one another • Currents in the mantle that move the tectonic plates • ...

10 Clues: Rift • Oceanic • Transform • Divergent • Subduction • Earthquake • Convergent • Convections • Continental • Plastic like material

10 Clues: Spews lava • Molten rock • What moves the plates • When to plates go apart • Second layer of the Earth • Thinnest layer of the Earth • When two plates come together • Forms during a divergent boundary • When two plates slide past each other • When one plate goes into the upper mantle

10 Clues: Spews lava • Molten rock • What moves the plates • When to plates go apart • Second layer of the Earth • Thinnest layer of the Earth • When two plates come together • Forms during a divergent boundary • When two plates slide past each other • When one plate goes into the upper mantle

10 Clues: molten rock • where two plates collide or overlap • where two plates slide past each other • the 1st and thinnest layer of the earth • a hole on earth where hot lava spews out • pieces of earth's crust floating on top of the mantle • a geological feature created from divergent boundaries • where two plates move away from each other in opposite directions • ...

10 Clues: plate • eruptions • the sudden movement • earths moving plates • Alfred Wegners theory • a tear of earths crust • melts a hole through the plate • magma that reaches earths surface • earths surface broken into to pieces • two of earths plates are pushing into each other

10 Clues: / means moving apart • / a valley made of rifts • / means slding past each other • / large cracks in the crust • / found at the top of the upper mantle • / when two tectonic plates collide and one subducts • / a plastic like layer found underneath the lithosphere • / a theory that continents sit and move on crust beneath the surface • ...

10 Clues: form when two lithospheric plates move apart. • forms when two lithospheric plates come together. • forms when two lithospheric plates slide past each other. • the outer shell of Earth that extends to a depth of 100 km. • a number of rigid, but moving, pieces of the Earth's surface. • the partially melted layer of the mantle that underlies the lithosphere. • ...

10 Clues: a weak zone in the upper part of the Earth's mantle • the solid outer layer of the Earth above the asthenosphere • violent shaking of the Earth's crust that may cause destruction • tectonics theory that earths lithospehre is divided into 12 plates • tectonic boundary where two plates are moving away from each other • ...

10 Clues: two plates collide • two plates move away • layers: crust, core and mantle • in between the crust and the core • the place where tectonic plates meet • two plates move past each other horizontally • spreading: the scientific theory about pangaea • tectonics: large scale movements of Earth's lithosphere • plates: the name of the pieces that the lithosphere is divided into • ...

10 Clues: The "plastic" mantle • Two plates coming together • Core The hottest layer of the earth • Hess The man who came up with sea floor spreading • Fault Two plates sliding horizontally past each other • Trench This is an example of a convergent, oceanic-oceanic • Core Only liquid layer inside earth, mainly composed of iron • ...

10 Clues: a deep valley that forms where two plates move apart • a plate boundary where two plates move toward each other • a plate boundary where tow plates move away from each other • a break in Earth's crust where slabs of rock slip past each other • the hypothesis that the continents slowly move across Earth's surface • ...

10 Clues: the ocean plate • the outer part of earth • a plate that is a continent • a plate going under another • The measuring of an earthquake • the area between the core and crust • plate a section of the earth's crust • the hottest and the center area of earth • shaking of the earth due to plates below moving • a hot substance that comes from vents or volcanoes

10 Clues: Boundary when two plates pull apart • a break in the earths crust that moves • depression formed at a subduction zone • Boundary when two plates come together • Boundary when two plates grind past each other • Hess credited with the theory of Plate Tectonics • Wegener credited with the theory of Continental Drift • ...

10 Clues: / the outermost physical layer of the earth • spreading / process of new seafloor forming. • boundary / When 2 tectonic plates move away from one another • tectonics / The lithosphere is divided into large moving pieces • boundary / when tectonic plates move toward each other and collide. • ...

10 Clues: earths crust the slowly moves • the remains of ancciant living animals • ocean split down the middle by a big crack • the uppermost solid part of the earths crust • the movment of the ocean floor at a divergent • plate boundary where the plates slowly collide together • a type of plate boundary where the plates slowly move apart from each other. • ...

10 Clues: when two plates collide • the area under the crust • the sections of the earth's crust • what is left by a divergent boundary • the magma that causes the plates to move • is the area on the surface of the planet where humans live • appears underwater, is the by-product of a convergent boundary • when two plates move away from each other in opposite directions • ...

10 Clues: The highest part of a chain of underwater mountains. • The solid part of the earth consisting of the crust and outer mantle. • Where two plates are moving apart, magma comes up to create new crust. • A deep crack in the Earth's surface associated with divergent boundary. • Formed by two continental plates colliding and forcing each other upwards. • ...

10 Clues: when plates move • plates pull apart • of the super continent • in crust due to shearing • when lava cools in water • where plates come together • where the plates pull apart • where the plates slide past each other • in crust due to compression at convergent boundaries • in crust due to tension built up at a divergent boundary

10 Clues: the thinnest layer of the earth • the inner most layer of the earth • the 2nd most inner layer of the earth • the force that proved wegener's theory • the layer right under the crust of the earth • when tectonic plates move towards each other • when tectonic plates move against one another • when tectonic plates move away from each other • ...

10 Clues: Mid-Atlantic ____ • Crack/split/break in the earth • "A conveyer belt for the plates". • Hot liquid under the earth's crust. • Boundary where 2 plates slide past each other. • A sudden slip on a fault, violent ground shaking. • The process where one plate is recycled under another. • Boundary where 2 plates are moving towards each other. • ...

10 Clues: the outer part of the earth. • where two plates are colliding. • where two plates are moving apart. • where plates slide passed each other. • Earth's seven continents all grouped together • the layer of the Earth that lies below the lithosphere. • heat is transferred by movement of a heated fluid such as air or water. • ...

10 Clues: Slide • Divide • Faults • Collide • Transform • Divergent Oceanic-Oceanic • Convergent Oceanic-Oceanic • Convergent Oceanic-Continental • Divergent Continental-Continental • Convergent Continental-Continental

10 Clues: hot flowing fluid • compactness of a substance • caused by a transform boundary • hot fluid with the earth's crust • occurs during a divergent boundary • solid bulk of the earth's interior • when two plates slide past each other • when to plates collide into each other • sideways and upwards movement of a plate • when two plates spread apart from each other

10 Clues: able to be bent • a planar fracture • earth outer layer • gradual caving or sinking • third layer of earths surface • to lift to a higher elevation • contains most of earth's volume • the upper layer of earths mantle • rigid most outermost part of earth • responsible for tectonic plate movement

10 Clues: collide • slide past • push apart • molten rock • rays of energy • the mass of something • thin outer most layer • the speed of something • the outer edge of something • one plate slides under the other

10 Clues: hot liquid inside earth • big rocks on earths crust • uneven heating causes this • The hottest layer of Earth • The outermost layer of earth • Plates move away from each other • two plates crashing into each other • the heat source of the earths crust • When plates "rub" against each other • The layer of earth in between core and crust

10 Clues: The layer below the crust. • The idea of plate tectonics. • Causes tectonic plates to move. • A cone shape that blows out magma. • When two plates slide past each other. • It creates different types of volcanoes • Two tectonic plates convergent and overlap lap. • Two tectonic plates moving in opposite directions. • ...

10 Clues: molten rock • most outermost of earth • plate movement is caused by • occur at divergent boundary • caused at transform boundary's • where tectonic plates converge • happens at transform boundary's • where the convection currents are located • two tectonic plates move away from each other • rocks break as the plates grind past eachother

10 Clues: Super Continental Land Mass • The smallest ocean in the world • The remains of prehistoric organisms • It is the largest ocean in the world • These are the available the facts or information • A system of ideas intended to explain a phenomena • The last name of the proponent of Continental Drift Theory • The first name of the proponent of Continental Drift Theory • ...

10 Clues: molten rock • Edge of a tectonic plate • Sections of the lithosphere • Fluid portion of the mantle • A tyoe of heat energy transfer • Rigid outer layer of the Earth • solid layer in the center of the earth • The molten layer at the center of the earth • Hard outer layer of crust and hard upper mantle • A theory that says earths outer layers are made of moving plates

10 Clues: two tectonic plates coming together • when two plates slide past each other • two plates moving away from each other • formation, this happens in the subduction zone • current, heat driven cycle that occurs in the mantle. • zone, one convergent plate is more dense than the other • hot molten rock that causes tectonic plates to have movement • ...

10 Clues: Colliding or coming together • Large piece of earth's crust • Boundary where two plates meet • Type of boundary where two plates go away • Type of boundary where two plates collide • A crustal feature formed by two converging plates • a chain of volcanoes that surround the Pacific Ocean • the sudden release of strain energy in the earths crust • ...

10 Clues: Rift • Fault • Focus • Mantle • Transect • MidoceanRidge • Asthenosphere • Collision Zone • Subduction zone • Seafloor Spreading

10 Clues: Lava underground. • The newer and thinner crust. • The older and thicker crust. • A boundary where plates collide. • Broken up parts of earths crust. • When one plate goes under another. • A boundary where plates move apart. • Occurs while two plates are transforming. • A boundary where plates slide past each other. • ...

10 Clues: The boundary where two plates collide • The boundary where two plates move apart • The boundary where two plates pass eachtoher • Forms when two pieces of continental and come apart • The formation movement and subduction of earths plates. • A weak spot in the crust where magma comes to the surface • A large wave produced by an earthquake on the ocean floor • ...

10 Clues: the study of planet earth • type of crust found under earths oceans • the amount of force pushing on a surface • the transfer of energy through empty space • a plate boundry where 2 plates move toward eachother • a plate boundry where 2 plates move away from eachother • a dense sphere of iron and nickel in center of the earth • ...

10 Clues: the study of planet earth • type of crust found under earths oceans • the amount of force pushing on a surface • the transfer of energy through empty space • a plate boundry where 2 plates move toward eachother • a plate boundry where 2 plates move away from eachother • a dense sphere of iron and nickel in center of the earth • ...

10 Clues: Makes up 84% of the earth • The thinnest layer of the earth • The innermost layer of the earth • The shaking of the earth's crust • The landform when all of the continents were together • A plate boundary where two plates slide past each other • A plate boundary where two plates move toward each other • A plate boundary where two plates move away from each other • ...

10 Clues: melted rock • Earths outer layer • when the crust shifts • old crust is destroyed • formed at plate boundaries • an idea we want to put forward • plates moving away from each other • large pieces of Earths outer layer • name of Earth when it was one large continent • theory that the rigid, cool outer layer of Earth is divided

10 Clues: ground shaking • a seafloor mountain • a long cut in the ground • graphical crack or separation • one of the plates moves under the other • mountain or hill with a vent at the top • two or more lithospheric plates collide. • two tectonic plates move away from each other • plates that move slide sideways past each other • heat-driven cycles that occur in the air and ocean

10 Clues: what we live on • the inside of the earth • to plates come together • Alfred Wegnerthis theory • liquid part of the earth • they move past each other • the action of compressing • the thickest part of the earth • hardness,toughness,brittleness,ext. • if it shifts it can cause an earthquake

14 Clues: A type of plate boundary • Underground sources of water • Process that creates volcanoes • The outermost layer of the Earth • Almost all water on Earth is this • Always goes down as altitude increases • A gas that is depleting the ozone layer • Came up with the idea of plate tectonics • The process of water moving through soil • Landform created by divergent boundaries • ...

16 Clues: is the cold and rigid outermost rock layer • plate boundary forms where two plates separate • plate boundaries form where two plates collide • polarity is a state in which magnetized objects • ridges are longer than any mountaint range on land • reversal occurs and the magnetic field reverses direction • plate boundary forms where two plates slide past eachother • ...

14 Clues: pulling apart • shaking of the ground • produced by earthquakes • sliding past each other • point of the earthquake • comes after an earthquake • magnitude of an earthquake • coming together with force • where an earthquake originates • second wave causes more damage • fastest wave causes less damage • tectonics explaining earths crust • describes the size of an earthquake • ...

20 Clues: Earths outer layer • Earths thickest layer • A ball of hot, solid metals • Huge underwater mountain ranges • A place where new crust is formed • A boundary where plates move apart • One of the metals found in the core • Convergent, divergent and transform • Huge plates in the earths lithosphere • A boundary where plates push together • A gap in the middle of a mid ocean ridge • ...

21 Clues: Hot melted rock • All of Earth's Liquid • Layer of Earth's interior • Squeezing of Earth's crust • all the gases around earth • scientist who examines rocks • layer made out of solid metal • rocky layer of Earth's Surface • A wide flat area of ocean floor • Deepest part of the ocean floor • deep cracks within Earth's crust • layer that is made of liquid metal • ...

16 Clues: form where two plates collide. • Moutain ranges in the middle of the ocean. • forms where two plates slide past each other. • Occurs and the magnetic field reverses direction. • The cold and rigid outermost rock layer is called the. • Continents were once a part of a supercontinent called. • As a slab sinks, it pulls on the rest of the plate with a force called. • ...

22 Clues: over 60% of earth is this • Heat transfer by wave motion • earths outer layer, its crust • the amount of matter in an object • a change in earth's magnetic field • The Hawaiian islands were formed by • Aristotle is the father of _______. • sound waves used to measure water depth • as you move toward the core the temperature • ...

16 Clues: The moving of the continent • A elevated area that spews lava • when two tectonic plates collide • What was before the continents split up • when two tectonic plates move away from each other • when two plates slide past each other, horizontally • slab pull is a part of the motion of a tectonic plate • a change of the earth's magnetic field to the opposite • ...

16 Clues: The moving of the continent • A elevated area that spews lava • when two tectonic plates collide • What was before the continents split up • when two tectonic plates move away from each other • when two plates slide past each other, horizontally • slab pull is a part of the motion of a tectonic plate • a change of the earth's magnetic field to the opposite • ...

15 Clues: one supercontinent • what is hawaii made of • molten rock under the surface • when plates move at each other • when plates slide past each other • who made the plate tectonics theory • stuff that gets shot out of volcanos • what forms from convergent boundaries • sudden and violent shaking on the ground • there are two types of ? one is continental • ...

9 Clues: Line • View • Crust • Drift • crust • lines • trench • Interval • tectonics

9 Clues: Zone • Wave • Plates • Forces • Forces • Boundary • Boundary • Boundary • Tectonics

9 Clues: force A force that builds up the Earth. • force A force that breaks down the Earth. • A destructive boundary in plate tectonics. • A constructive boundary in plate tectonics. • A slowly moving mass of ice that overtime shapes Earth's surface. • Water that falls from the atmosphere that contributes to the erosion of Earth's surface. • ...

10 Clues: The supercontinent. • Violent shaking of the Earth. • When two plates move parallel to each other. • A type of boundary where two plates move apart. • Movement of the continents relative to each other. • A type of boundary where two plates come together. • A vent or crack where magma can burst out to the surface. • ...

10 Clues: An underwater canyon • The place where faults form • A large break in Earth’s crust • Broken pieces of Earth’s crust • The place where mountains form • The place where a rift valley forms • valley A deep valley in Earth’s crust • The theory that the plates are moving • When the ocean floor sinks into the mantle • The adding of new material to the ocean floor

10 Clues: come together • supercontinent • diverge; moving away • earths plates & plate motions into a theory • trace of an ancient organism preserved in rock • mid-ocean ridges add material to the ocean floor • continents slowly moving over the surface overtime • breaks in Earth’s crust where rocks slip past each other • when Earth’s crust diverge on land and a deep valley forms • ...

10 Clues: molten rock beneath Earth's surface • enormous moving pieces of the Earth's lithosphere • the amount of force exerted per unit area of a surface • an undersea mountain chain where new ocean floor is produced • a boundary where one denser plate collides and sinks under less dense crust • ...

10 Clues: outer shell of earth • top layer of the earth • walls move side by side • downward fold in a rock layer • arch shape fold in rock layers • theory the continents were all one • one side of fold is higher than the other • hanging wall moves up in relation to footwalls • hanging wall moves down in relation to the footwall • ...

10 Clues: The study of this magnetic record • A greek word that means "all the earth" • This is a change in earth's magnetic field. • one of the two plates is descending beneath the other • A device that can detect small changes in magnetic fields. • A line on a map that connects points that have the same age • ...

10 Clues: / The upper mantle. • / There are 7 of these of plates. • Eruption / An effect of continental drift. • / The hot semi-solid rock in the asthenosphere. • / What pulls the crust away from he ridge as it cools. • / The centre of the earth contains this and heavy atoms. • currents / Formed when magma rises and flows under the plates. • ...

10 Clues: Crust and upper mantle. • Outer most layer of Earth. • The largest layer inside Earth. • Liquid core composed of iron and nickel. • Theory that Earth's crust and upper mantle. • Solid core composed of dense iron and nickel. • Ocean created when the super continent broke apart. • Super continent that existed 200 million years ago. • ...

10 Clues: Edge of a plate • Rock formed from magma • No magma fills the gap • Moving away from one another • Plates go towards each other • Formed by a Convergent Boundary • made from the lighter piece of basalt • Only plate that does not involve magma • formed by the collision of 2 plates with different density • ...

10 Clues: a type of crust • 2 plates that are separating • rock type that makes up the crust • the ridge created on the seafloor • 2 plates that slide past each other • 2 plates that come together or collide • the type of crust that is the seafloor • this event occurs at all plate boundaries • feature that is created at a subduction zone • feature formed when 2 tectonic plates collide

10 Clues: Landform that you can climb • valley Linear shaped lowland • An edge where two plates meet • Where convection currents come from • Lava that is beneath the earth's surface • boundary When two tectonic plates come together • currents Hot currents that move Hawaiian islands • plates Places in the crust that cause earthquakes • ...

10 Clues: Forms where two plates seperate • magnetic field reverses directions • the cold and ridge outermost rock layers are called • continents were once part of a supercontinent called • The mountain range in the middle of the ocean are called • continents are in constant motion on the surface of earth • polarity, reverse direction and orient themselves and point south • ...

10 Clues: The type of plate found under oceans. • Molten liquid rock below the surface of the Earth. • Molten liquid rock above the surface of the Earth. • The margin or boundary between two tectonic plates. • The type of plate that forms the Earth's continents. • Tectonic plate margin where two tectonic plates slide past each other. • ...

10 Clues: What this crossword puzzle is about. • Instrument used to measure earthquakes. • A layer inside a planetary body bounded below by a core and above by a crust. • one plate will bend and slide under the other. This process is called__________ • The molten or semi-molten natural material from which all igneous rocks are formed. • ...

10 Clues: Movement in the biggest layer • When plates collide, they ___. • The biggest layer of the earth • When plates separate, they ___. • The thin, least dense layer of the earth • When plates slide past each other, they ___. • When a plate slides under another, ___ happens • Underwater valley made by plates spreading apart • ...

10 Clues: Movement in the biggest layer • The biggest layer of the earth • When plates collide, they ___. • When plates separate, they ___. • the thin, least dense layer of the earth • When plates slide past each other, they ___. • When a plate slides under another, ___happens • Underwater valley made by plates spreading apart • ...

10 Clues: the collision of two plates. • two plates that move apart or rift. • two plates that are sliding past eachother. • when the denser ocean subducts under the other one. • when the material pushes upward after the collision of two plates. • drift the gradual movement as the continents drift apart over time. • ...

10 Clues: Harry Hess’ hypothesis • two plates that collide • two plates that separate • theory of Alfred Wegener • theory of tectonic plates • two plates that slide past • supercontinent named by Wegener • individually sites of upwelling material • originated the theory of continental drift • came up with the theory of seafloor spreading

10 Clues: pull apart • slide past • push together • made of rock or ices • super continent theory • earths rocky outer layer • hot liquid under earths crust • rock that forms on ocean floor • low dense rock that forms plates • forms when tectonic plate move apart

10 Clues: the speed • pull apart • slide past • molten rock • ray of energy • two plates colliding • the outer edge of something • the thin outer most layer of earth • one plate sliding under another plate • the mass of a substance per unit volume