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