Question

How does temperature affect the atmosphere and cause weather?

Answer 1

As a first step, you could define what the temperature is. Then you could explain the various weather and atmospheric conditions that are caused by the temperature. Also remember that, coldness indicates the absence of heat energy. Also mention the pressure variations caused due to temperature.

Complete answer:
In the question, we are asked to find the effect of temperature on the atmosphere and weather. You may know that the temperature could be defined as the measure of heat energy present. Now let us see how that affects the atmosphere and causes weather.

You may be familiar with the fact that warm air always tends to rise while the cold air tends to sink, this is because in the case of hot air, the number of molecules per cubic meter is fewer when compared to the cold air and hence the warm air will rise above the cooler air. This is the reason for the occurrence of hot or cold fronts which are simply the boundaries between hot and cold air.

When evaporation occurs water absorbed by warm air becomes clouds by rising up. Also, remember that evaporation occurs as the result of the sun heating up the Earth’s surface. The atmosphere tends to be more humid when it is warm or hot. Also, higher humidity in addition to the movement of a front across it results in rain, thunderstorms, etc.
Thereby, we have seen how the temperature affects the atmosphere and causes weather.

Note:
Temperature can even result in pressure variations in the atmosphere. High pressure system is present in hot or cold dry areas. Also, clockwise movement is observed for air of high pressure area. So, quite obviously the movement of humid air in a low pressure area is in the counterclockwise direction. This persistent pressure battle results in weather.