Electromagnetic Spectrum grade 8

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

• microwaves
• visible light
• gamma rays

Which electromagnetic waves are used in ovens?

• Infrared rays

• ultraviolet rays

• microwaves

Which type of waves are used in radio and Television broadcasting?

• radio waves

• infrared rays

• x-rays

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

• ultraviolet rays
• x-rays
• gamma rays

For waves in any medium, as the wavelength decreases, what happens to the frequency?

• It also decrease
• It stays the same
• It increases

Which of the following has wavelengths longer than microwaves?

• Infrared waves
• Radio waves
• Visible light

Which electromagnetic waves allow us to diagnose & treat cancer?

• Gamma rays
• X-rays
• Ultraviolet rays

The electromagnetic spectrum includes the complete range of electromagnetic waves placed in order of:

• increasing amplitutde

• increasing speed

• increasing frequency

Which of the following has frequencies higher than ultraviolet rays?

• visible light
• infrared rays
• x-rays

Which electromagnetic waves help doctors detect broken bones inside your body?

• gamma rays
• x-rays
• ultraviolet rays