Electromagnetic Waves

Front

What is a photon?

Back

A photon is a particle of light that has a discrete amount of energy.

Front

How does light behave?

Back

Light behaves both as a wave and as a particle.

Front

What is the range of the visible light spectrum?

Back

The visible light spectrum ranges between infrared rays and ultraviolet rays.

Front

What type of waves do cellular telephones utilize?

Back

Cellular telephones utilize microwaves.

Front

How do you calculate the frequency of an electromagnetic wave?

Back

Frequency (f) can be calculated using the formula f = c / λ, where c is the speed of light (3.0 x 10^8 m/s) and λ is the wavelength.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3.0 x 10^8 m/s.

Front

What is the relationship between wavelength and frequency?

Back

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

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that can travel through a vacuum and consist of oscillating electric and magnetic fields.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, from radio waves to gamma rays.

Front

What are microwaves used for?

Back

Microwaves are used for communication (like cellular phones), cooking, and radar.