Unit 1: Earth's Interior

5. Molten rock found beneath Earth’s surface.
8. The slow movement of material caused by differences in temperature and density inside Earth.
10. A scale that measures an earthquake’s intensity based on its effects and damage.
11. The rigid outer layer of Earth made of the crust and uppermost mantle.
12. A location where one tectonic plate sinks beneath another plate into the mantle.
13. An area where hot material rises from deep within Earth and melts through a tectonic plate, often forming volcanoes.
15. The point on Earth’s surface directly above the focus of an earthquake.
17. The process in which minerals form as magma or lava cools and solidifies.

1. Igneous material that is rich in iron and magnesium and is generally darker and denser.
2. A scale that measures an earthquake’s magnitude based on the energy released.
3. Rocks that form when magma or lava cools and crystallizes.
4. The soft, slowly flowing layer of the upper mantle beneath the lithosphere.
6. The force that pulls objects toward Earth or other objects with mass.
7. Igneous material that is rich in silica and is generally lighter in color and less dense.
8. The thin, solid outer layer of Earth.
9. The amount of mass in a given volume of a substance.
14. An instrument used to detect and record seismic waves.
15. The shaking of Earth’s surface caused by the sudden movement of rocks along a fault.
16. Boundary – The location where two tectonic plates meet. The three types are divergent, convergent, and transform.
18. Waves of energy produced by an earthquake that travel through Earth.