EM Waves

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves of energy that have both electric and magnetic fields and travel through space at the speed of light. They include a range of wave types such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, organized by wavelength or frequency. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What type of electromagnetic radiation is used in remote controls?

Back

Infrared.

Front

Which electromagnetic wave is commonly used for cooking food?

Back

Microwaves.

Front

What is the frequency range of radio waves?

Back

3 kHz to 300 GHz.

Front

Which electromagnetic waves are used for communication?

Back

Radio waves.

Front

What is the wavelength of radio waves compared to other electromagnetic waves?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

The speed of electromagnetic waves in a vacuum is approximately 299,792 kilometers per second (or about 300,000 kilometers per second).

Front

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

Back

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

Front

What type of electromagnetic radiation can cause sunburn?

Back

Ultraviolet (UV) radiation.