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Tides- are very long-period waves that move through the oceans in response to the forces exerted by the moon and sun. –Originate in the oceans and progress.

Published byDuane Gaines Modified over 8 years ago

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Presentation on theme: "Tides- are very long-period waves that move through the oceans in response to the forces exerted by the moon and sun. –Originate in the oceans and progress."— Presentation transcript:

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2 Tides- are very long-period waves that move through the oceans in response to the forces exerted by the moon and sun. –Originate in the oceans and progress toward the coastlines. High Tide- rise (crest) Low Tide – fall (trough) High Tide – Low Tide = Tidal Range.

3 Gravity –major force responsible for creating tides Inertia –acts to counterbalance gravity 2 Bulges –Created by Gravity and Inertia

4 NEAR SIDE –Side of Earth facing the moon gravitational attraction is strongest (E and M) because closer Inertia tries to keep the water in place Water - Pulled toward Moon Result: Bulge due to gravity

5 FAR SIDE –Opposite side of the Near Side of Earth where the gravitational attraction of the moon is less because it is farther away. Inertia counteracts the gravitational force Water- moves away from the Earth Result: Bulge - Inertia REST –gravity and inertia = balanced

6 Occur: –Gravitational forces are perpendicular to each other (S and M to E) –1 st Quarter Moon –3 rd Quarter Contribution: –Moon: gravitational forces –Sun: gravitational forces Type: –Weak

7 Occur: –Earth, the Sun, and the Moon are in a line –Full Moon –New Moon Contribution: –Moon: gravitational forces –Sun: gravitational forces Type: –Strong

8 http://www.youtube.com/watch?v=l37ofe9 haMUhttp://www.youtube.com/watch?v=l37ofe9 haMU

9 http://www.oceanservice.noaa.gov/educati on/kits/tides/media/supp_tide05.html http://home.hiwaay.net/~krcool/Astro/moo n/moontides/

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