What is the ultimate source of energy for surface currents?Group of answer choicesgravityheatcorewindsun
Question
What is the ultimate source of energy for surface currents?
- gravity
- heat
- core
- winds
- sun
Solution
The ultimate source of energy for surface currents is the sun. Here's why:
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The sun heats the Earth unevenly, causing temperature differences in the atmosphere and oceans.
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These temperature differences result in density differences, with warmer water or air being less dense and rising, and cooler water or air being more dense and sinking.
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This movement of water and air due to density differences creates currents.
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Additionally, the rotation of the Earth (due to gravity) also influences the direction and movement of these currents.
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Finally, the wind, which is also driven by the sun's heat and the Earth's rotation, can also influence surface currents by pushing water on the surface of the ocean.
So, while gravity, heat, the Earth's core, and wind all play a role in creating and influencing currents, the ultimate source of energy for these currents is the sun.
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