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