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