Across
- 1. Theory Theory that the Earth's lithosphere is divided into tectonic plates that move around on top of the asthenosphere.
- 7. Layer of the Earth between the crust and the core. Extremely thick, contains most of Earth's mass.
- 9. Amount of force per unit area that is put on given material.
- 13. Hot liquid that forms when rock partially or completely melts, may include mineral crystals.
- 16. Large, gently sloped volcano that forms from repeated, nonexplosive eruptions of lava.
- 17. Funnel shaped pit around the central vent of a volcano.
- 18. Boundary between two colliding tectonic plates.
- 19. Soft layer of the mantle on which pieces of the Lithosphere move.
- 21. Stress which stretches rocks into two opposite directions, the rocks become longer in a lateral direction.
- 23. The process by which new oceanic lithosphere is created at mid ocean ridges as older materials are pulled away from the ridge.
- 26. Mountain that forms when molten rock, called magma, is forced to the Earth's surface.
- 27. A volcano made of alternating layers of lava and pyroclastic material.
Down
- 2. Magma that flows onto the Earth's surface.
- 3. Piece of the Lithosphere that moves around on top of the Asthenosphere.
- 4. The boundary between two tectonic plates that are sliding PAST each other horizontally.
- 5. Mostly made of Iron, from the mantle to the core/center of the Earth. About the size of Mars.
- 6. Solid dense center of our planet that extends from the bottom of the outer core to the center.
- 8. Outermost, rigid layer of the Earth.
- 10. Fragments of rock that are created by explosive volcanic eruptions.
- 11. Stress that reduces the volume or length of a rock, as that produced by the convergence of plate margins.
- 12. Core is divided into two categories, this one is liquid and surrounds the inner core.
- 14. Boundary between two tectonic plates that are moving AWAY from each other.
- 15. Stream of fluid propelled by thermal convection.
- 18. Earth's major plaetes, known as plate tectonics.
- 20. Fault in which the two fault blocks move past each other horizontally.
- 22. Theory that continents can drift apart from one another and have done so in the past.
- 24. Occurs when one or a stack of originally flat and planar surfaces are bent or curved as a result of permanent deformation.
- 25. Region where an oceanic plate sinks down into the asthenosphere at a convergent boundary, usually between continental and oceanic plates.
- 27. Outermost layer of the Earth, 5-100km thick, thinnest layer.
- 28. Under the Asthenosphere, is the strong lower part of the mantle.