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Why does Earth have three main climate zones?

a. Warm air rises at the equator and cold air sinks over the poles causing an unequal distribution of heat over Earth.
b. There are differences in latitude and, thus, the angle of heating from the sun.
c. Continents and other landmasses physically interfere with global heat distribution.
d. The Earth rotates and affects the major ocean currents.

1 Answer

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Final answer:

The Earth has three main climate zones due to the unequal distribution of heat caused by warm air rising at the equator and cold air sinking over the poles. Differences in latitude and the physical interference of continents and landmasses also contribute to the creation of these climate zones.

Step-by-step explanation:

The Earth has three main climate zones due to several factors:


  1. Warm air rises at the equator and cold air sinks over the poles causing an unequal distribution of heat over Earth. This creates the tropical zone near the equator, where temperatures are consistently warm, and the polar zones near the poles, where temperatures are consistently cold.

  2. There are differences in latitude and, thus, the angle of heating from the sun. This leads to the creation of the temperate zone, which lies between the tropical and polar zones and experiences more moderate temperatures.

  3. Continents and other landmasses physically interfere with global heat distribution. Land heats up and cools down more quickly than water, causing variations in temperature and precipitation across different regions. This contributes to the creation of different climate zones.

Note:

The Earth's rotation also affects major ocean currents, which in turn influence climate patterns globally. However, this is not a direct factor in the presence of the three main climate zones.

Learn more about Climate zones

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