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