Electromagnetic Spectrum

Which electromagnetic waves have the highest frequencies and the shortest wavelengths?

• microwaves
• visible light
• gamma rays

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

Electromagnetic waves that help your body produce vitamin D are called?

• ultraviolet rays
• x-rays
• gamma rays

Which of the following has wavelengths longer than microwaves?

• Infrared waves
• Radio waves
• Visible light

Which of the following lists the electromagnetic waves in order of increasing wavelength?

• X-rays, visible light, radio waves
• gamma rays, microwaves, UV rays
• infrared rays, radio waves, x-rays

Radar uses which type of electromagnetic waves to detect objects & measure their distance and speed?

• microwaves
• infrared rays
• x-rays

For an electromagnetic wave traveling through a vacuum, what happens to its speed as the frequency increases?

• Speed increases

• Speed decreases

• It depends on the wavelength.

• Remains the same

Which of the following is true about EM waves?

• Light is the only wave that humans can perceive.

• Radio waves are used in television broadcast.

• Gamma rays have the shortest wavelength.

• All of the above.

What type of waves does light travel in?

• transverse
• compression
• high and low waves
• waves like the ocean