Energy Transfer, Waves, EM Spectrum

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when faster-moving particles collide with slower-moving ones, transferring energy.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer, less dense fluid rises and cooler, denser fluid sinks, creating a circulation pattern.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves. It does not require a medium and can occur in a vacuum, such as the heat from the sun reaching the Earth.

Front

What are electromagnetic (EM) waves?

Back

Electromagnetic waves are waves of energy that travel through space at the speed of light. They include radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

Front

Which EM waves have the longest wavelength?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

Which EM waves have the shortest wavelength?

Back

Gamma rays have the shortest wavelength in the electromagnetic spectrum.

Front

What is the relationship between wavelength and frequency in EM waves?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What is the principle of heat transfer?

Back

Heat transfer occurs from a hotter substance to a colder substance until thermal equilibrium is reached.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two substances in contact with each other reach the same temperature and no heat flows between them.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is touching a hot metal spoon that has been sitting in a pot of boiling water.