- 1. Earth's core is mostly made of iron and _____.
A) magnesium B) granite C) nickel D) basalt
- 2. Scientists think that movements in the liquid _____core create Earth's magnetic field.
A) further B) inner C) middle D) outer
- 3. The oceanic crust is most like _____ in composition overall.
A) magnesium B) basalt C) granite D) calcium
- 4. Pressure and temperature _____ as you move deeper below the Earth's surface.
A) decrease B) stay the same C) increase
- 5. To learn about Earth's interior, geologists study how _____ waves move through Earth.
A) P waves B) seismic C) exterior D) interior E) S waves
- 6. The _____ is Earth's outer skin of solid rock.
A) mantle B) inner core C) outer core D) crust
- 7. In which layer of Earth is the asthenosphere located?
A) mantle B) outer core C) inner core D) crust
- 8. Which lists the main layers of Earth in order from outermost to innermost?
A) mantle, core, crust B) lithosphere, asthenosphere, mesosphere C) crust, mantle, core D) core, mantle, crust
- 9. Which best describes the mantle?
A) dry land and ocean floor B) dense, solid metal ball C) molten metal D) hot but solid rock
- 10. What do geologists call the crust ad uppermost mantle?
A) outer core B) mesosphere C) lithosphere D) asthenosphere
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