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