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

What type of electromagnetic waves can humans see?

Back

Visible light is the type of electromagnetic waves that humans can see.

Front

Which has a higher frequency: X-rays or ultraviolet rays?

Back

X-rays have a higher frequency than ultraviolet rays.

Front

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

Back

Higher frequency electromagnetic waves have more energy.

Front

What is radiant energy?

Back

Radiant energy is energy that travels in waves and spreads out from its source in all directions.

Front

Which type of electromagnetic wave has the least energy?

Back

Radio waves have the least energy among the types of electromagnetic waves.

Front

What are gamma rays used for?

Back

Gamma rays are used in medical imaging and cancer treatment, but not for communicating with satellites.

Front

What is infrared radiation commonly used for?

Back

Infrared radiation is commonly used in remote controls and thermal imaging.

Front

How do microwaves work in cooking?

Back

Microwaves heat food by causing water molecules in the food to vibrate, producing heat.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

Electromagnetic waves travel at the speed of light, which is approximately 299,792 kilometers per second.