Electromagnetic Spectrum

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes visible light, radio waves, X-rays, and gamma rays.

Front

What is frequency in the context of electromagnetic waves?

Back

Frequency is the number of waves that pass a given point in one second, measured in hertz (Hz).

Front

What is wavelength in the context of electromagnetic waves?

Back

Wavelength is the distance between successive crests of a wave, usually measured in meters.

Front

How are frequency and wavelength related?

Back

They are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What type of electromagnetic radiation has the longest wavelength?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

What type of electromagnetic radiation has the shortest wavelength?

Back

Gamma rays have the shortest wavelength in the electromagnetic spectrum.

Front

What is radiant energy?

Back

Radiant energy is the energy of electromagnetic waves, which can travel through space.

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 is the relationship between energy and frequency in electromagnetic waves?

Back

Higher frequency waves have more energy than lower frequency waves.

Front

What type of electromagnetic radiation is used in medical imaging?

Back

X-rays are commonly used in medical imaging.