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Biggest ocean waves of all

Published byYohanes Sudirman Modified over 5 years ago

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Presentation on theme: "Biggest ocean waves of all"— Presentation transcript:

1 Biggest ocean waves of all
Topic 7: Tides Biggest ocean waves of all

2 Types of Tides Tides are a combination of the solar and lunar tides (remember wave interference) Solar tide – tide caused by the sun Lunar tide – tide caused by the moon High tide- crest at shore Low tide- trough at shore Tide range- distance between high & low tide Ebb tide- tide going out Flood tide- tide coming in

3 5 Factors That Cause Tides
Gravitational pull of the moon Gravitational pull of the sun Centrifugal force of earth as it rotates Position of the sun & moon Angle of orbit of moon around earth

4 Gravitational Pull of the Moon
Moon produces a tide by exerting a gravitational force on the earth Gravity – force of attraction between two bodies Draws moon and earth toward each other Centrifugal force keeps moon and earth from colliding Fg(moon) ocean earth Fc(earth)

5 Gravitational Pull of the Sun
Sun produces a tide by exerting a gravitational force on the earth moon Fg(moon) ocean earth sun Fg(sun) Fc(earth)

6 Lunar and Solar Tides Gravitational pulls from the sun and moon each create an ocean tide Lunar and solar tides combine to make a single tide wave Lunar tide Solar tide earth sun moon

7 Spring Tides during a new and full moon earth, sun & moon line up
produces highest of high and lowest of low tides

8 Neap Tides during the 1st & 3rd quarter moons
earth, sun, and moon are at right angles produces small high and low tides.

9 Tidal Time Solar day is 24 hours Lunar day is 24 hours 50 minutes.
Tides occur 50 minutes later each day. Moon rises about 50 min later each night. Lunar Month = One tidal month 29.5 days 2 spring tides 2 neap tides

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