Energy Transfer, Waves, EM Spectrum

Front

What are electromagnetic (EM) waves?

Back

Electromagnetic waves are waves of energy that travel through space at the speed of light, consisting of oscillating electric and magnetic fields. 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 conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases), where warmer, less dense areas rise and cooler, denser areas sink.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves, which can occur in a vacuum, such as the heat from the sun reaching the Earth.

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 are the visible light wavelengths?

Back

Visible light wavelengths range from approximately 400 nm (violet) to 700 nm (red).

Front

What is the order of the EM spectrum from longest to shortest wavelength?

Back

The order is: radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, gamma rays.

Front

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

Back

Heat always flows from the hotter substance to the colder substance.