How is heat distributed in the atmosphere from the equator to the poles?
Convection currents in the atmosphere cause wind patterns that move heat from the equator toward the poles. Ocean currents warmed by the Sun’s energy carry heat from the equator toward the poles as well.
How are polar and tropical regions different?
1) Climate is hot and humid in tropical rain forest whereas polar regions are cold. 2) Polar regions are permanently covered with snow whereas tropical rain forest has heavy rain falls. 3) Less vegetation is found in polar areas whereas tropical rainforest have wide variety of vegetation.
What are the three pathways of heat?
The transfer of energy from one region to another is called heat. This transfer of energy can take place by three processes: radiation, conduction, and convection. Thermal energy, or heat, always moves from things that are warmer (have more energy) to things that are cooler (have less energy).
What is tropical region and polar region?
The Earth has three main climate zones: tropical, temperate, and polar. The climate region near the equator with warm air masses is known as tropical. The North and South poles have climates that are polar because of nearby cold air masses.
Is convection heat transferred?
Convection. Convective heat transfer is the transfer of heat between two bodies by currents of moving gas or fluid. In free convection, air or water moves away from the heated body as the warm air or water rises and is replaced by a cooler parcel of air or water.
How does atmospheric circulation distribute heat energy?
In addition to heat from the equator moving towards the poles through atmospheric circulation, ocean currents also transfer heat. Oceans transfer approximately 20 per cent of the total heat from the tropics to the poles. Each ocean has a circular pattern of surface currents called a gyre.
What are the differences in temperature of the ocean in polar regions and tropical regions?
In high latitude (polar) regions, there is little difference between the surface temperature and the deep water temperature, and temperature is fairly constant (and cold) at all depths. Polar waters therefore lack a strong thermocline, and as with tropical water, there is little seasonal change in temperatures.
How are precipitation and temperature difference between polar and tropical climate zones?
Our Earth is divided into three zones according to the temperature and precipitation conditions: tropical, polar and temperate. Tropical climatic zone lies (generally) between 30 degree North and 30 degree South latitudes. Polar climate zone is characterized by extremely low temperatures throughout the year.
How is heat transferred?
Thermal energy transfers occur in three ways: through conduction, convection, and radiation. When thermal energy is transferred between neighboring molecules that are in contact with one another, this is called conduction.
How is heat transferred throughout the Earth system?
Energy is transferred between the Earth’s surface and the atmosphere in a variety of ways, including radiation, conduction, and convection. Conduction is one of the three main ways that heat energy moves from place to place. The other two ways heat moves around are radiation and convection.
How are polar regions formed?
Deep, parallel furrows on the seabed of the East Siberian Sea indicate that ice sheets have even formed in the Arctic Ocean itself within the past 800,000 years, not floating on the water surface like pack ice, but lying directly on the sea floor….Icing of the polar caps.
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Why do polar regions have low temperatures throughout the year?
The polar regions are cold. Because of the chill, polar air has a low capacity to evaporate water vapor in the air. With less of this greenhouse gas in the air, less longwave energy is absorbed in the lower troposphere. More longwave energy escapes to space, thus helping to lower surface temperature on the whole.
Where is the heat absorbed in the North Atlantic Ocean?
Heat is transferred in a northward direction throughout the North Atlantic. This heat is absorbed by the tropical waters of the Pacific and Indian oceans as well as of the Atlantic and is then transferred to the high latitudes, where it is finally given up to the atmosphere.
What is the mechanism for the heat transfer in a windmill?
The mechanism for the heat transfer is principally by thermohaline circulation rather than by wind-driven circulation.
What is the difference between temperate zone and polar zone?
Mid-latitude temperate regions show greater seasonal fluctuations in surface temperature than the poles or the tropics; an 8-15 o C difference from summer to winter in temperate zones, compared to only ~2 o C in polar and tropical areas.
How does the water temperature change at different latitudes?
There is rapid temperature change near the surface in the thermocline zone, but the deep water temperature is fairly stable (eWOCE, http://www.ewoce.org/gallery/eWOCE_Tables.html#Atlantic). Temperature profiles vary at different latitudes, as the surface water is warmer near the equator and colder at the poles.