electromagnetic waves

Front

What are electromagnetic waves?

Back

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

Front

What is the wavelength of infrared waves?

Back

Infrared waves have a wavelength of approximately 10^-5 meters.

Front

What type of electromagnetic wave is used in radios?

Back

Radio waves have a wavelength of approximately 10^3 meters.

Front

What are ultraviolet rays?

Back

Ultraviolet rays are a type of electromagnetic wave that helps the body produce vitamin D.

Front

What type of electromagnetic waves are used in X-ray machines?

Back

X-rays are used in X-ray machines to detect broken bones inside the body.

Front

How does frequency relate to energy in electromagnetic waves?

Back

The lower the frequency, the lower the energy of the electromagnetic wave.

Front

What is the order of electromagnetic waves from longest to shortest wavelength?

Back

Radio, Microwaves, Infrared, Visible Light, Ultraviolet, X-rays, Gamma Rays.

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 (the speed of light).

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye, ranging from approximately 400 to 700 nanometers.

Front

What are microwaves used for?

Back

Microwaves are used for cooking food and in communication technologies.