Practice Flashcard 7th Grade Electromagnetic Radiaton

Front

What are microwaves used for?

Back

Microwaves are used in ovens and cell phone communications.

Front

What type of electromagnetic wave causes sunburn?

Back

Ultraviolet (UV) rays cause sunburn.

Front

What section of the electromagnetic spectrum can we see?

Back

The only section of the spectrum we can see is Visible Light.

Front

What determines the color of visible light?

Back

The wavelength (and frequency) determines the color of visible light.

Front

Which color in the visible spectrum has the smallest wavelength?

Back

Violet has the smallest wavelength in the visible spectrum.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, from radio waves to gamma rays.

Front

What are infrared rays used for?

Back

Infrared rays are used in remote controls, thermal imaging, and heating.

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 are gamma rays?

Back

Gamma rays are high-energy electromagnetic waves emitted by radioactive materials.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as wavelength increases, frequency decreases.