The Ocean Floor

1. 1What percentage of water covers Earth's surface?

   1. A82%
   2. B65%
   3. C71%
   4. D55%
   5. E87%
2. 2Global average depth is about how many feet?

   1. A12,000 ft
   2. B7,500 ft
   3. C10,000 ft
   4. D9,000 ft
   5. E15,000 ft
3. 3What are the 3 major units of the seafloor?

   1. AContinental margins
   2. BOcean basin floors
   3. COceanic ridges
   4. DContinental shelf
   5. ETrenches
4. 4The two types of continental margins are active and passive.

   1. AVerdadero
   2. BFalso
5. 5These have relatively large shelves and no trench.

   1. APassive margins
   2. BActive margins
6. 6What are the 3 basic parts of passive margins?

   1. AContinental shelf
   2. BContinental slope
   3. CContinental rise
   4. DContinental trench
   5. EContinental volcanoes
7. 7These tend to have very narrow shelves (if any), and a trench.

   1. AActive margins
   2. BPassive margins
8. 8Trenches are found along the margins of much of the ocean basin floor.

   1. AVerdadero
   2. BFalso
9. 9The deepest trench, at almost 7 miles deep.

   1. AMariana Trench
   2. BPuerto Rico Trench
   3. CJava Trench
   4. DPhillipine Trench
   5. EJapan Trench
10. 10Most of the ocean basin floor is called the abyssal plain.

    1. AVerdadero
    2. BFalso

11. 11Seamounts are underwater volcanoes.

    1. AVerdadero
    2. BFalso
12. 12Flat-topped seamounts are called...

    1. AGuyots
    2. BAtolls
13. 13Roughly circular coral reefs produced when the top of a seamount drops below sea level are called...

    1. AGuyots
    2. BAtolls
14. 14These are typically found in the center of an oceanic ridge, while the rest of the ridge is comprised of volcanoes and new oceanic crust.

    1. ARift valley
    2. BSeamounts
    3. CTrenches
    4. DDeep-sea fans
    5. EContinental margins

Descripción

Test sobre The Ocean Floor, creado por Katie Ray el 29/11/2014.

Autor

Katie Ray

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English

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