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