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