What is the main source of energy for wind and ocean currents?
The sun is the external source of energy that causes convection currents, which drive the winds, ocean currents, and the water cycle.
What is the source of energy for ocean currents?
Strong ocean currents are generated from a combination of temperature, wind, salinity, bathymetry, and the rotation of the earth. The sun acts as the primary driving force, causing winds and temperature differences that impact currents.
What creates wind and ocean currents on Earth?
Because the Earth’s equator is warmed by the most direct rays of the Sun, air at the equator is hotter than air further north or south. This hotter air rises up at the equator and as colder air moves in to take its place, winds begin to blow and push the ocean into waves and currents.
What source of energy creates winds and surface currents?
The Sun is the major source of energy for phenomena on the Earth’s surface, powering winds, ocean currents and the water cycle. Energy from the Sun heats the Earth unevenly. As a result, convection currents develop in the atmosphere and ocean. These redistribute heat in the atmosphere and oceans.
What is the cause of deep ocean currents?
Deep ocean currents
When ocean water freezes, forming sea ice, salt is left behind causing surrounding seawater to become saltier and denser. Dense-cold-salty water sinks to the ocean bottom. Surface water flows in to replace the sinking water, which in turn becomes cold and salty enough to sink.
What are oceans currents?
Ocean currents are the continuous, predictable, directional movement of seawater driven by gravity, wind (Coriolis Effect), and water density. Ocean water moves in two directions: horizontally and vertically. Horizontal movements are referred to as currents, while vertical changes are called upwellings or downwellings.
What is the ultimate source of energy for ocean circulation?
Ultimately, the Sun is the source of most of this ocean energy. Heat from the sun is the direct source of ocean thermal energy; transfer and distribution of thermal energy from the sun contributes to wind creation; waves result from wind motion over the oceans.
What are the 3 types of ocean currents?
Oceanic currents are driven by three main factors:
- The rise and fall of the tides. Tides create a current in the oceans, which are strongest near the shore, and in bays and estuaries along the coast. …
- Wind. Winds drive currents that are at or near the ocean’s surface. …
- Thermohaline circulation.