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 is the relationship between wavelength and frequency?

Back

As the wavelength of a wave increases, its frequency decreases, and vice versa. This means longer waves have lower frequencies and shorter waves have higher frequencies.

Front

What type of electromagnetic wave has the longest wavelength?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

What type of electromagnetic wave has the highest frequency?

Back

Gamma rays have the highest frequency in the electromagnetic spectrum.

Front

List the electromagnetic waves in order of decreasing frequency.

Back

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

Front

What is the frequency of a wave with a wavelength of 2 meters?

Back

The frequency can be calculated using the formula: frequency = speed of light / wavelength. For a wavelength of 2 meters, the frequency is approximately 150 million Hz.

Front

What are infrared waves used for?

Back

Infrared waves are commonly used in remote controls, thermal imaging, and night vision technology.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that can be detected by the human eye, typically ranging from wavelengths of about 400 to 700 nanometers.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

The speed of electromagnetic waves in a vacuum is approximately 299,792 kilometers per second (or about 300,000 kilometers per second).

Front

What is the difference between X-rays and gamma rays?

Back

X-rays are produced by electronic transitions in atoms, while gamma rays are emitted from nuclear reactions. Gamma rays have higher energy than X-rays.