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 radiation has the shortest wavelength?

Back

Gamma rays have the shortest wavelength in the electromagnetic spectrum.

Front

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

Back

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

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 (or about 300,000 km/s).

Front

What is the ground state of an atom?

Back

The ground state of an atom is the lowest energy state of its electrons, where they occupy the closest orbitals to the nucleus.

Front

What is the excited state of an atom?

Back

The excited state of an atom occurs when one or more electrons have absorbed energy and moved to a higher energy level.

Front

What force holds protons together in the nucleus?

Back

The strong nuclear force holds protons and neutrons together in the nucleus, overcoming the electromagnetic repulsion between protons.

Front

What is frequency?

Back

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

Front

How do you calculate frequency from the period of a wave?

Back

Frequency (f) is the reciprocal of the period (T); f = 1/T.

Front

What is the range of visible light in the electromagnetic spectrum?

Back

Visible light ranges from approximately 400 nm (violet) to 700 nm (red) in wavelength.