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 portion of the electromagnetic spectrum can we see?

Back

Visible light is the portion of the electromagnetic spectrum that can be seen by the human eye.

Front

What type of electromagnetic wave has the longest wavelength and lowest frequency?

Back

Radio waves have the longest wavelength and the lowest frequency in the electromagnetic spectrum.

Front

What type of waves are used to create medical images by being absorbed by bones?

Back

X-rays are the waves used in medical imaging as they can penetrate soft tissue and are absorbed by bones.

Front

Which electromagnetic wave has the least amount of energy?

Back

Radio waves have the least amount of energy compared to other types of electromagnetic waves.

Front

What do all waves carry?

Back

All waves carry energy.

Front

What is the frequency of a wave?

Back

Frequency is the number of waves that pass a point in one second, measured in hertz (Hz).

Front

What is wavelength?

Back

Wavelength is the distance between two consecutive peaks or troughs in a wave.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).

Front

What is infrared radiation used for?

Back

Infrared radiation is used in various applications, including remote controls, thermal imaging, and heating.