Heat Transfer Review

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

Front

What are the three main modes of heat transfer?

Back

The three main modes of heat transfer are conduction, convection, and radiation.

Front

Define conduction.

Back

Conduction is the transfer of heat through a solid material without the movement of the material itself, typically occurring in solids.

Front

Define convection.

Back

Convection is the transfer of heat by the physical movement of fluid (liquid or gas), where warmer areas of a liquid or gas rise and cooler areas sink.

Front

Define radiation.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum.

Front

What is the Greenhouse Effect?

Back

The Greenhouse Effect is the warming of a planet's surface due to the trapping of heat by greenhouse gases in the atmosphere.

Front

How do greenhouse gases affect temperature?

Back

Greenhouse gases absorb and emit infrared radiation, which helps to keep the Earth's surface warm.

Front

What happens to cold air compared to warm air?

Back

Cold air is denser and sinks, while warm air is less dense and rises.

Front

What is a good insulator?

Back

A good insulator is a material that slows down heat transfer, preventing heat from escaping or entering.

Front

Why is Venus hotter than Earth?

Back

Venus is hotter than Earth due to its thick atmosphere rich in greenhouse gases, which trap heat.