Why near the equator the sea level pressure is low?

A. Equatorial regions is hotter and the air above expands, becomes less dense and rises. This produces a low pressure belt at this latitude.

Why is the equator hot?

Why is it hot at the Equator and cold at the poles? Due to the tilt of the Earth, the Equator is closer to the sun so receives more of its energy. The Equator has a smaller surface area so heats up quickly compared to the poles. This means more heat from the sun makes it to the surface of the Earth.

Why does air over the equator rise?

This pattern, called atmospheric circulation, is caused because the Sun heats the Earth more at the equator than at the poles. In the tropics, near the equator, warm air rises. When it gets about 10-15 km (6-9 miles) above the Earth surface it starts to flow away from the equator and towards the poles.

What effect does temperature have on air pressure?

Whenever the temperature is high, the air pressure is low. As the temperature rises, the air gets heated, expands, and becomes lighter. This lighter air in the vicinity of the earth’s surface starts moving upwards the sky. As a result, the air pressure in such areas decreases.

What’s the temperature at the equator?

Average annual temperatures in equatorial lowlands are around 31 °C (88 °F) during the afternoon and 23 °C (73 °F) around sunrise. Rainfall is very high away from cold ocean current upwelling zones, from 2,500 to 3,500 mm (100 to 140 in) per year.

Why is the equator hot and wet?

The air above the Equator is very hot and rises, creating an area of low pressure. The Equator experiences high amounts of rainfall due to this rising air resulting in a warm and wet equatorial climate (eg the Amazon and Congo tropical rainforests). This is because sinking air does not result in precipitation.

Is the air pressure higher at the poles or the equator?

Air pressure is highest at the equator, and much lower at the poles. Guy-Lussac’s Law states that pressure is proportional to temperature at constant volume. Often people think that low pressure areas are warmer, however this is only the case where volume is not constant.

When the air pressure is higher the air temperature is?

For example, if air pressure increases, the temperature must increase. If air pressure decreases, the temperature decreases. It also explains why air gets colder at higher altitudes, where pressure is lower.