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