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Lesson #14: Water Properties

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chris desmond

on 25 June 2013

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Transcript of Lesson #14: Water Properties

Tides The gravitational forces made by the moon and sun and the rotation of the Earth makes the rise and fall of the sea level. Gravity A force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull. Earth's gravity is what keeps you on the ground and causes objects to fall. Shoreline Also known as the coastline, it is where a body of water meets the land. Flood tide Means the incoming or rising tide. Ebb tide Means the outgoing tide, when water is going back out from the shore. Slack tide Before the tide changes. A period where the water is still. Bivalve A mollusk (like an oyster or clam) that has a shell consisting of two sides. Current A body of water moving
in a definite direction. At low tide the sand bars become exposed, at high tide this sand bar is back under the waters surface! Salinity The saltiness of the water Turbidity The cloudiness of the water
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