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

Which type of electromagnetic wave has the longest wavelength?

Back

Radio Waves have the longest wavelength in the electromagnetic spectrum.

Front

What are gamma rays?

Back

Gamma rays are a type of electromagnetic radiation with the highest frequency and shortest wavelength, often produced by radioactive materials.

Front

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

Back

As the wavelength increases, the frequency decreases, and vice versa. This means longer wavelengths correspond to lower frequencies.

Front

What are infrared rays used for?

Back

Infrared rays are used in devices such as heat lamps and TV remote controls.

Front

List the types of electromagnetic waves in order of increasing wavelength.

Back

Gamma rays, X-rays, ultraviolet rays, visible light, infrared rays, microwaves, radio waves.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye, consisting of colors from red to violet.

Front

What are microwaves?

Back

Microwaves are electromagnetic waves with wavelengths shorter than radio waves but longer than infrared rays, commonly used in microwave ovens and communication.

Front

What is the frequency of gamma rays compared to radio waves?

Back

Gamma rays have a much higher frequency than radio waves.

Front

What are some examples of devices that use radio waves?

Back

Examples of devices that use radio waves include cellphones and remote controls.