Waves. Important Pts. To Remember The transfer of ENERGY from wind to water makes waves. The waves...
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Transcript of Waves. Important Pts. To Remember The transfer of ENERGY from wind to water makes waves. The waves...
![Page 1: Waves. Important Pts. To Remember The transfer of ENERGY from wind to water makes waves. The waves move, NOT the water.](https://reader036.fdocuments.in/reader036/viewer/2022062317/5a4d1b797f8b9ab0599b87a3/html5/thumbnails/1.jpg)
Waves
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Important Pts. To Remember
• The transfer of ENERGY from wind to water makes waves.• The waves move, NOT the water
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Wave Parts
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• When waves come near the shore, their wave height INCREASES.
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2 Types of WavesDeep Water and Surface Waves:• Deep-Water waves move in water deeper
than one-half their wave length. They are denser and slower.
• They become surface waves when they move toward the shore. They affect the climate on continents.
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What are tides?• The periodic rise and fall of ocean
water.• Influenced by the sun and the
moon’s gravitational pull.
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High Tides• When part of the ocean is directly facing
the moon, the moon’s gravity is pulling the ocean water into a bulge.
• At the same time, water on the opposite side of the Earth bulges because of the Earth’s rotation and motion of the moon.
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Low Tides• When high tides occur, water is drawn away
from the area between the high tides, which causes low tides to form.
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Timing of Tides• The moon revolves around the Earth
much more slowly than the Earth rotates.
• High and low tides occur twice a day, approx. every 12 hrs.
• Ex. If the first high tide of the day occurs at 2 a.m. the next high tide will occur at 2 p.m.
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Spring TideSun, moon and earth are in a line.Occurs twice every 28 days.
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Neap TideThe sun, earth, and moon are at a 90 degree angle.Occurs twice every 28 days.
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Currents• Streamlike movements of ocean water, caused
by wind, that follow a pattern.
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Surface Currents• Horizontal streamlike movements of
water that is caused by wind and that occur at or near the surface of the ocean.
• Like blowing on hot chocolate: forms ripples
• Affect the climate on continents by moving cold and warm water around the globe.
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Deep Currents• Streamlike movements of ocean
water far below the surface.• Denser and slower than surface
currents due to temperature and salinity.