What is convection and how does it affect the movement of air?
Answer: Convection is the transfer of heat through the movement of a fluid or
gas, such as air. When a fluid or gas is heated, it becomes less dense and
rises, while cooler, denser fluid or gas sinks to take its place. This creates a
circular motion known as a convection current. In the case of air, warmer air
rises, creating a low-pressure system, while cooler air sinks, creating a highpressure system. This movement of air can lead to changes in weather
patterns and the distribution of heat across the earth's surface.
Convection is an important process in the atmosphere, as it helps to distribute
heat from the equator towards the poles, as well as to transport moisture and
pollutants. It is also the driving force behind many of the earth's natural
phenomena, such as thunderstorms, hurricanes, and tornadoes.
References:
- Encyclopaedia Britannica. (2021). Convection.
https://www.britannica.com/science/convection
- National Oceanic and Atmospheric Administration. (n.d.). Convection.
https://www.weather.gov/jetstream/convection