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The Earth’s Tides

The Earth’s Tides. What is a tide?. Tides are the vertical movement of water, the rise (flood) and fall (ebb) of water in large water bodies. Tides are most noticeable along continental shorelines. low tide. High tide. rotation of Earth. Moon. What causes tides?.

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The Earth’s Tides

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  1. The Earth’s Tides

  2. What is a tide? • Tides are the vertical movement of water, the rise (flood) and fall (ebb) of water in large water bodies. • Tides are most noticeable along continental shorelines.

  3. low tide High tide rotation of Earth Moon What causes tides? • Tides occur because the Moon’s gravity changes the shape of Earth’s oceans.

  4. The attraction causes the oceans to bulge out in the direction of the moon. • Another bulge occurs on the opposite side, since the Earth is also being pulled toward the moon (and away from the water on the far side). What causes tides…

  5. Since the earth is rotating while this is happening, two tides occur each day. What causes tides…

  6. Low tide

  7. Bay of Fundy, Nova Scotia

  8. Spring tide: • A tide of large range occurring during new and full moons. • Happens when the Earth, Moon, and Sun are all lined up. • Results in extreme high tides and low tides. Spring Tides

  9. Neap tide: • A tide of small range occurring during the 1st & 3rd quarter moons. • Happens when the Earth, Moon, and Sun are not lined up. • Results in less extreme high tides and low tides. Neap Tides

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