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