EM Waves

Front

What is an electromagnetic wave (EM wave)?

Back

An electromagnetic wave is a wave that consists of oscillating electric and magnetic fields and travels through space at the speed of light.

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 relationship between wavelength and frequency in EM waves?

Back

The wavelength and frequency of an EM wave are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What is a convex lens?

Back

A convex lens is a lens that is thicker in the middle than at the edges and converges light rays that pass through it.

Front

What is a concave lens?

Back

A concave lens is a lens that is thinner in the middle than at the edges and diverges light rays that pass through it.

Front

What does the law of reflection state?

Back

The law of reflection states that the angle of incidence is equal to the angle of reflection.

Front

What happens to light when it passes through a prism?

Back

When light passes through a prism, it is refracted (bent) and separated into its component colors, with shorter wavelengths bending more than longer wavelengths.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another due to a change in its speed.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of EM radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is the frequency of a wave?

Back

The frequency of a wave is the number of cycles that pass a point in one second, measured in hertz (Hz).