Ocean Motions, Part 2 - Currents and Upwelling

Ocean Motions, Part 2 - Currents and Upwelling

Ocean Motions, Part 2 - Currents and Upwelling
Reading Level

	edHelper's suggested reading level:	high interest, readability grades 4 to 6
	Flesch-Kincaid grade level:	5.63

Vocabulary

	challenging words:		circulation, density, wherever, material, opposite, eastern, move, several, movement, life, upward, flow, southern, surface, east, fact
	content words:		Mississippi River, Gulf Stream

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Ocean Motions, Part 2 - Currents and Upwelling
By Patti Hutchison

¹     Waves and tides move ocean water toward and away from the shore. But ocean water moves in other ways, also. Down below the surface, the water moves in streams called currents.

²     Some currents are like rivers in the ocean. They can be thousands of kilometers long. In fact, the largest ocean currents would make the Mississippi River look like a small stream.

³     There are two types of currents, surface currents and deep currents. Surface currents are caused by wind patterns. They are usually several hundred meters deep. They can be warm or cold-water currents, depending on where they come from.

Paragraphs 4 to 9:
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