EM Spectrum

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What are radio waves used for?

Back

Radio waves are used to send signals, including WiFi, television, and text messages.

Front

How do electromagnetic waves differ from mechanical waves?

Back

Electromagnetic waves can travel through empty space, while mechanical waves require a medium (like air or water) to travel.

Front

What happens to the energy of electromagnetic waves as the wavelength decreases?

Back

The energy of electromagnetic waves increases as the wavelength gets shorter.

Front

What is a wave?

Back

A wave is a repeating pattern that can transfer energy from one place to another.

Front

Which type of electromagnetic wave has the highest frequency?

Back

Gamma rays have the highest frequency in the electromagnetic spectrum.

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye, typically ranging from wavelengths of about 400 nm (violet) to 700 nm (red).

Front

What type of waves are used in microwave ovens?

Back

Microwaves are used in microwave ovens to heat food.

Front

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

Back

Frequency and wavelength are inversely related; as frequency increases, wavelength decreases.

Front

What type of electromagnetic radiation is used in medical imaging?

Back

X-rays are used in medical imaging to view the inside of the body.