Electromagnetic Waves and Their Properties

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that can travel through a vacuum and consist of oscillating electric and magnetic fields. They include radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

Front

Which electromagnetic waves have the highest frequencies and the shortest wavelengths?

Back

Gamma rays.

Front

What happens to frequency as wavelength decreases?

Back

Frequency increases.

Front

Which type of wave cannot travel through a vacuum?

Back

Sound waves.

Front

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

Back

As the frequency increases, the wavelength decreases.

Front

What is the speed of all electromagnetic waves in a vacuum?

Back

The speed of all electromagnetic waves in a vacuum is approximately 299,792 kilometers per second (the speed of light).

Front

What are the properties of gamma rays?

Back

Gamma rays have the highest energy, highest frequency, and shortest wavelength in the electromagnetic spectrum.

Front

What is the difference between visible light and infrared waves?

Back

Visible light is the part of the electromagnetic spectrum that can be seen by the human eye, while infrared waves have longer wavelengths and are not visible to the human eye.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, organized by wavelength and frequency.

Front

What are microwaves used for?

Back

Microwaves are used for cooking food, in communication technologies, and in radar.