Question

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DEFINE CURRENT WAVES​

Answer 1

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DEFINE CURRENT WAVES

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CURRENTS

The large masses of water moving in a specific direction from one location to another are known as currents. They occur on open bodies of water like oceans and are usually measured in knots or meters per second.

What influences currents?

Oceanic currents are directly influenced by three main factors. These are the rise and fall of the tide, wind and thermohaline circulation [4]. The rise and fall of tides are also known to influence oceanic currents by creating currents either near the shore, or in bays and estuaries. These are known as tidal currents and are the only type of current that changes in a regular pattern and whose changes can be predicted [2]. Winds are known to drive currents at or near the oceanic surface and can influence water movements on a localised or global scale. Temperature also plays a major factor when it comes to currents. Water bodies near the poles are cold while water near the equator is warmer and these differences in temperature play an important part in causing currents. Cold water currents occur as the cold water near the poles sink and moves towards the equator while warm water currents move outward from the equator along the surface towards the poles in an attempt to replace the sinking water. This mixing of warm and cold water causes currents and as they move around the globe from hemisphere to hemisphere they also help to replenish oxygen supplies with water bodies .

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Answer 2

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• ❥Currents are defined as the direction of flow of a body of water. The intensity of waves are influenced by wind factors. The intensity of tides are influenced by the location and position of the Earth. The intensity of currents are influenced by winds, temperature differences in water and the oceanic surface topography.