EM Waves Review

Front

What is the speed of electromagnetic waves in a vacuum?

Back

All electromagnetic waves travel at the same speed in a vacuum, which is approximately 299,792 kilometers per second (or the speed of light).

Front

What type of waves are the longest and used for communication and entertainment?

Back

Radio waves are the longest waves in the electromagnetic spectrum and are commonly used for communication and entertainment.

Front

Which waves are used to penetrate solids and are utilized in medical imaging to see bones?

Back

X-Rays are electromagnetic waves that can penetrate solids and are used in medical imaging to view bones.

Front

What part of the electromagnetic spectrum can our eyes see?

Back

Our eyes can see visible light, which is a small part of the electromagnetic spectrum.

Front

What type of waves have the longest wavelength and are used to carry signals for radar, TV, and radio?

Back

Radiowaves have the longest wavelength in the electromagnetic spectrum and are used to carry signals for radar, television, and radio.

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 microwaves used for?

Back

Microwaves are used for various applications, including cooking food, communication (such as in cell phones), and radar technology.

Front

What is infrared radiation?

Back

Infrared radiation is a type of electromagnetic radiation with wavelengths longer than visible light but shorter than microwaves, commonly associated with heat.

Front

What are ultraviolet rays?

Back

Ultraviolet rays are electromagnetic waves with shorter wavelengths than visible light, known for their ability to cause sunburn and are used in sterilization.

Front

What are gamma rays?

Back

Gamma rays are the highest energy form of electromagnetic radiation, with very short wavelengths, and are used in cancer treatment and imaging.