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