Electromagnetic Waves

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that can travel through a vacuum and do not require a medium. They are made up of oscillating electric and magnetic fields.

Front

Which type of electromagnetic wave has the highest frequency?

Back

Gamma waves have the highest frequency among electromagnetic waves.

Front

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

Back

The higher the frequency of an electromagnetic wave, the higher its energy.

Front

What type of wave requires a medium to travel?

Back

A mechanical wave requires a medium to travel.

Front

Why do plants appear green?

Back

Plants appear green because they reflect green light and absorb other colors.

Front

What is the wavelength of gamma rays compared to radio waves?

Back

Gamma rays have the shortest wavelengths compared to radio waves.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

Electromagnetic waves travel at the speed of light, which is approximately 299,792 kilometers per second.

Front

Name the different types of electromagnetic waves in order of increasing frequency.

Back

Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye, typically ranging from wavelengths of about 400 to 700 nanometers.

Front

What is the main source of electromagnetic waves on Earth?

Back

The Sun is the main source of electromagnetic waves on Earth.