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