Quiz on Electromagnetic Waves and the Electromagnetic Spectrum

What type of waves are electromagnetic waves?

• Longitudinal waves

• Transverse waves

• Surface waves

• Standing waves

What is the speed of electromagnetic waves in a vacuum?

• 600,000 kilometers per second

• 150,000 kilometers per second

• 300,000 kilometers per second

• 450,000 kilometers per second

Which of the following has the shortest wavelength?

• Radio waves

• Microwaves

• Infrared rays

• X-rays

Which of the following has the longest wavelength?

• Radio waves

• Microwaves

• Infrared rays

• X-rays

A picture that shows regions of different temperatures in the body?

• Thermostat

• Thermocline

• Thermogram

• X-Rays

Shortest wavelength in the visible light is?

• Red

• Green

• Yellow

• Purple

What is the effect of ultraviolet rays on the skin?

• They can cause skin cancer

• They full of Vitamin B

• They cause rash skin

• They have no effect

What is the function of X-rays in medical imaging?

• To emit visible light

• To measure temperature

• To penetrate most matter

• To create sound images

Which electromagnetic wave is used in radiation treatment for cancer?

• Infrared rays

• Gamma rays

• Microwaves

• Radio waves

What happens to light when it enters a new medium?

• It disappears

• It bends (refracts)

• It changes color

• It speeds up