Earth Layers

3. the largest layer of the Earth that is made up of magma and rock
4. an instrument that measure and records details of earthquakes, such as force and duration
5. sensing device that detects magnetic fields, helping confirm seafloor spreading
6. the outermost layer of the Earth that is made up the continental and oceanic parts
9. these float on the lithosphere and travel due to convection currents within the asthenosphere
11. type of crust that is thicker, less dense and older
12. a line or break in the Earth's surface where tectonic plates shift
14. mass of an object compared to the size or volume of that object
15. a sudden and violet shaking of the ground
17. the amount of force that is being exerted
18. core layer that is Earth's only liquid layer made of molten iron and nickel
19. core layer that is the hottest layer of Earth and is made of mostly solid iron and nickel

1. one large landmass hypothesized to have broken apart about 200 million years ago into continents
2. type of crust that is thinner, more dense and younger
7. measurement of the amount of heat in an object
8. large land mass
10. all of the crust and the upper portion of the mantle
11. movement in fluids where warm rises and cool sinks
13. the lower part of the mantle that has begun to melt and become fluid
16. scientist who studies the Earth