Fifth Grade Part 4 Review 2 Ocean.

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Presentation transcript:

Fifth Grade Part 4 Review 2 Ocean

Ocean Information About three-fourths of Earth is covered with oceans. Ocean water is denser that fresh water because of salts and other dissolved substances making it easier to float. Water pressure is greater the deeper you go. land ocean

Tide Repeated rise and fall in the level of the ocean There are two daily tides (high tide and low tide) High Tide Low Tide

Gravitational Pull of the Moon Earth’s Tides Repeated rise and fall in the level of the ocean caused by the moon’s gravitational pull Low Tide Gravitational Pull of the Moon Earth Moon Tidal Bulge – where High Tide occurs

Oceans’ Effect on Land Erosion makes beaches smaller. (waves carry sand and sediments away from the shore) Deposition makes beaches larger. (waves drop sediments near the shore)

Sea Cave A split or hollow opening, usually at sea level, in the base of a sea cliff, formed by waves acting on weak parts of.

Sea Arch Formed by wave erosion which leaves a bridge of rock over the water

Sea Stack A pillar of rock, found in the water close to a coastline. Begins as a sea arch that is eroded by waves.

Estuary Area where salt and freshwater mix A place where a river and an ocean come together Copyright © March 1, 2001 Association of National Estuary Programs, Galveston Bay Estuary Program

Ocean Food Chain Shows the flow of energy from one organism to the next