Ocean Tides Ocean Waves and Tides Tides The

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Ocean Tides Ocean Waves and Tides

Ocean Tides Ocean Waves and Tides

Tides • The rise and fall in sea level is called a tide. •

Tides • The rise and fall in sea level is called a tide. • Caused by a giant bulge of water. • One low-tide/high-tide cycle takes about 12 hrs and 25 min. • Tidal range is the difference in ocean level between high-tide and low-tide.

 • Spring Tides – Earth, Moon, and Sun are lined up (new and

• Spring Tides – Earth, Moon, and Sun are lined up (new and Full Moon positions). – High Tides are higher and Low Tides are lower than normal. This results in a BIG tidal range. – The New Moon Spring Tide is the STRONGEST of all the tides. Because both the moon and sun are pulling in the same direction.

 • Neap Tides – Earth, Moon, and Sun form right angles. 1 st

• Neap Tides – Earth, Moon, and Sun form right angles. 1 st and 3 rd Quarter Moons. – High Tides are lower and Low Tides are higher than normal. Small Tidal Range.

Gravitational Effect of the Moon • Two big bulges of water form on the

Gravitational Effect of the Moon • Two big bulges of water form on the Earth: – one directly under the moon – another on the exact opposite side • As the Earth spins, the bulges follow the moon.

The Bulge of water will follow the moon’s movement.

The Bulge of water will follow the moon’s movement.

 • • • The rise and fall in sea level is called a

• • • The rise and fall in sea level is called a tide. Caused by a giant bulge of water. One low-tide/high-tide cycle takes about 12 hrs. and 25 min. Tidal range is the difference in ocean level between high-tide and low-tide. Earth, Moon, and Sun are lined up. High Tides are higher and Low Tides are lower than normal. • • Earth, Moon, and Sun form right angles. High Tides are lower and Low Tides are higher than normal. Gravitational Effect of the Moon Two big bulges of water form on the Earth: • one directly under the moon • another on the exact opposite side As the Earth spins, the bulges follow the moon. The Bulge of water will follow the moon’s movement.