Electromagnetic Waves Review

Electromagnetic waves vary in

• the speed they travel in a vacuum.

• wavelength and frequency.

• the way they reflect.

• the orientation of their electric and magnetic fields.

The full range of frequencies of electromagnetic radiation is called

• visible light.

• radio waves.

• the electromagnetic spectrum.

• invisible radiation.

The waves with the longest wavelengths in the electromagnetic spectrum are

• Infrared rays.

• radio waves

• gamma rays

• X-rays

The visible light spectrum ranges between

• radar waves and X-rays.

• television waves and infrared rays.

• infrared rays and ultraviolet rays.

• ultraviolet rays and gamma rays.

Which of the following occurs as a light wave bends when it passes from one medium into another?

• constructive interference

• refraction

• destructive interference

• reflection

Which electromagnetic waves have the longest wavelengths and lowest frequencies?

• infrared waves

• radio waves

• gamma rays

• ultraviolet rays

The electromagnetic waves with the highest frequencies are called

• radio waves.

• gamma rays.

• X-rays.

• visible light.

Electromagnetic waves can transfer energy without a(n)

• medium.

• electric field.

• magnetic field.

• change in either a magnetic or an electric field.

Which electromagnetic waves are used in ovens and cell phone communications?

• Infrared rays

• ultraviolet rays

• microwaves

Which type of waves are used in broadcasting?

• radio waves
• infrared rays
• x-rays