Electromagnetic Spectrum

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

Arrange the following in decreasing frequency: radio waves, microwaves, x-rays, gamma rays.

Back

Gamma rays, x-rays, ultraviolet waves, microwaves, radio waves.

Front

Which type of electromagnetic radiation has the highest energy?

Back

X-rays have the highest energy among the options provided.

Front

Who predicted the existence of electromagnetic waves?

Back

James Clerk Maxwell predicted the existence of electromagnetic waves.

Front

What unit is used to measure frequency?

Back

Hertz (Hz) is the unit used to measure frequency.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3.0 x 10^8 m/s.

Front

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

Back

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

Front

What type of electromagnetic radiation is used in microwave ovens?

Back

Microwaves are used in microwave ovens to heat food.

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that can be seen by the human eye, ranging from approximately 400 nm (violet) to 700 nm (red).

Front

What are gamma rays used for in medicine?

Back

Gamma rays are used in medical imaging and cancer treatment due to their ability to penetrate tissues.