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