8.10A Convection Currents

Front

What is convection?

Back

Convection is the transfer of heat through a fluid (liquid or gas) caused by the movement of the fluid itself.

Front

What causes convection currents in the atmosphere?

Back

Convection currents in the atmosphere are caused by the uneven heating of the Earth's surface by the Sun.

Front

What is the role of density in convection?

Back

Density differences in fluids cause warmer, less dense fluid to rise and cooler, denser fluid to sink, creating convection currents.

Front

How does solar radiation affect ocean currents?

Back

Solar radiation heats the surface of the ocean, causing less dense warm water to rise and more dense cold water to sink, driving ocean currents.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises.

Front

What is a high pressure area?

Back

A high pressure area is created when air sinks toward the Earth's surface, leading to clearer skies and stable weather.

Front

What is a low pressure area?

Back

A low pressure area is formed when warm air rises, leading to cloud formation and potentially stormy weather.

Front

What is the difference between conduction and convection?

Back

Conduction is the transfer of heat through direct contact, while convection is the transfer of heat through the movement of fluids.

Front

What is the significance of ocean currents?

Back

Ocean currents regulate climate, influence weather patterns, and affect marine ecosystems.

Front

How do convection currents affect weather?

Back

Convection currents can lead to the formation of clouds and precipitation, influencing local weather patterns.