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