- 1. The two types of crust are _________________________ and _________________________.
A) oceanic, land
B) continental, volcanic
C) land, pangaea
D) oceanic, volcanic
E) oceanic, continental
- 2. Iceland, the Samoan Islands, and Hawaii are examples of landforms created by ____________________________.
A) a hot spot
B) a convergent zone
C) a ring of fire
D) a subduction zone
E) a divergent zone
- 3. At mid-ocean ridges, new ____________________________ crust is created.
A) continental
B) convergent
C) transform
D) volcanic
E) oceanic
- 4. Seafloor spreading is a process that creates new ________________________ crust.
A) volcanic
B) convergent
C) oceanic
D) transform
E) continental
- 5. The _________________________ Islands are located in the middle of the Pacific plate.
A) Australian
B) Hawaiian
C) Samoan
D) Ring
E) Icelandic
- 6. Convection currents in our Earth's mantle drives the process that moves our __________________________.
A) oceans
B) crusts
C) mountains
D) clouds
E) volcanoes
- 7. The largest and most powerful mountains and volcanoes are located _____________________________.
A) on Australia
B) on the surface
C) underwater
D) on Iceland
E) above surface
- 8. Areas where continental and oceanic plates converge are also said to be _____________________________.
A) Icelandic zones
B) mid-atlantic zones
C) mid-pacific zones
D) Australian zones
E) subduction zones
- 9. Between oceanic and continental crusts, the ___________________ crust is more dense.
A) continental
B) transform
C) oceanic
D) divergent
E) convergent
- 10. The rate of seafloor spreading is approximately ______________ every 10 years.
A) 30 cm
B) 30 meters
C) 3 cm
D) 30 inches
E) 3 inches
- 11. As the ocean seafloor spreads, the newly formed floor will adapt a specific magnetic signature according to the Earth's magnetic pole at that time. As years pass, lateral segments of seafloor will thus share the same _____________________ signature on either side of the mid-oceanic ridge.
A) divergent
B) volcanic
C) convergent
D) magnetic
E) zubductive
- 12. In seafloor spreading, the further the ocean floor is away from the mid-ocean ridge, the _____________________ that floor will be.
A) older
B) newer
C) prettier
D) younger
E) rockier
- 13. Iceland is located in the middle of _______________________________________________________________.
A) the mid-Australian ridge
B) the mid-Caribbean ridge
C) the mid-Pacific ridge
D) the mid-Atlantic ridge
E) the mid-convergent ridge
- 14. In an island chain such as Hawaii, volcanic islands further away from the hot spot will tend to be ________________________.
A) prettier
B) older
C) newer
D) rockier
E) younger
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