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