EM Spectrum

Front

What is the electromagnetic spectrum?

Back

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

Front

What portion of the electromagnetic spectrum can humans see?

Back

Humans can see the visible light portion of the electromagnetic spectrum.

Front

What are infrared rays used for?

Back

Infrared rays are used to detect heat and are often used in remote controls and thermal imaging.

Front

What are x-rays used for?

Back

X-rays are used in medicine to create images of the inside of the body, helping to diagnose injuries and diseases.

Front

What colors make up visible light?

Back

The colors of visible light are red, orange, yellow, green, blue, indigo, and violet (ROY G BIV).

Front

What is ultraviolet light?

Back

Ultraviolet light is a type of electromagnetic radiation that is not visible to the human eye and can cause sunburn.

Front

What is the difference between visible light and infrared light?

Back

Visible light can be seen by the human eye, while infrared light is felt as heat and cannot be seen.

Front

What is the wavelength of visible light?

Back

The wavelength of visible light ranges from approximately 400 to 700 nanometers.

Front

What is the role of gamma rays in medicine?

Back

Gamma rays are used in medical treatments, such as cancer therapy, to kill cancer cells.

Front

What is the speed of electromagnetic waves?

Back

All electromagnetic waves travel at the speed of light in a vacuum, which is about 299,792 kilometers per second.