Currents Where are the Oceans? Identify the Oceans Tides Waves

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Presentation transcript:

Currents Where are the Oceans? Identify the Oceans Tides Waves The Ocean Floor Ocean Storms

Where are the Oceans?

PREDICT: What percent of the earth is covered in water PREDICT: What percent of the earth is covered in water? What percent is land? Explain your prediction.

PREDICT:What percent of the earth’s water is salt PREDICT:What percent of the earth’s water is salt? What percent is fresh? Explain your prediction.

Identify the Oceans of the World

World Ocean Facts Area (1,000,000 km²) Volume (1,000,000 km³) Average Depth (m) Maximum Depth (m) Atlantic Ocean 82.4 323.6 3926 9200 Pacific Ocean 165.2 707.6 4282 11,022 Indian Ocean 73.4 291.0 3963 7460 Arctic Ocean 14.1 17.0 1205 4300

Currents

Arctic Ocean Atlantic Ocean Pacific Ocean Indian Ocean

Tides

What causes tides? The gravitational forces of the moon and sun on the water causes the tides.. The moon, being nearest, has the greatest effect even though the sun is the larger of the two. High tides are generated on the sides of the Earth nearest to and farthest from the moon

During new and full moon phases the moon, sun, and Earth are aligned causing a greater gravitational pull on the Earth. This results in higher high tides and lower low tides.

Still-Water Line - The level of the ocean if it were flat without any waves. Crest - The highest part of the wave above the still-water line. Trough - The lowest part of the wave below the still-water line Wave Height - The vertical distance between the crest and the trough. Wavelength - The horizontal distance between each crest or each trough.

What Makes A Wave?

Tsunami Hurricane Ocean Storms Typhoon El Nino Cyclone