6th grade earth science ch 18 ocean motion

12 terms by chilyer

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12 words

wave

rhythmic movement that carries energy through matter or space

surface current

wind-powered ocean current that moves water parallel to Earth's surface

salinity

a measure of the amount of salts dissolved in seawater

basin

low area on Earth

Coriolis effect

causes moving air and water to turn left in the southern hemisphere and right in the northern hemisphere due to Earth's rotation

upwelling

verical circulation in the ocean that brings deep, cold water to the ocean surface

density current

circulation pattern in the ocean that forms when a mass of more dense seawater sinks beneath less dense seawater

crest

highest point of a wave

trough

lowest point of a wave

breaker

collapsing ocean wave that forms in shallow water and breaks onto the shore

tide

daily rise and fall in sea level

tidal range

the difference between the level of the ocean at high tide and the level at low tide

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