- 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) outer
C) inner
D) further
- 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) stay the same
C) decrease
- 5. To learn about Earth's interior, geologists study how _____ waves move through Earth.
A) P waves
B) interior
C) exterior
D) seismic
E) S waves
- 6. The _____ is Earth's outer skin of solid rock.
A) outer core
B) inner core
C) mantle
D) crust
- 7. In which layer of Earth is the asthenosphere located?
A) outer core
B) inner core
C) mantle
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) dry land and ocean floor
B) molten metal
C) hot but solid rock
D) dense, solid metal ball
- 10. What do geologists call the crust ad uppermost mantle?
A) lithosphere
B) asthenosphere
C) mesosphere
D) outer core
|