Electromagnetic Spectrum

How are electromagnetic waves different from other waves?

• They have short wavelengths

• they transmit energy instead of matter

• they can travel through empty space

• they can change direction by reflection

Which has the longest wavelength and the lowest frequency/energy? These waves are used in broadcasting, wifi, and texting.

• Gamma rays

• Visible light

• Radio waves

• Infrared rays

Which electromagnetic waves are used in devices such as heat lamps and TV remote controls?

• X-ray

• Ultraviolet rays

• Infrared Rays

• Microwaves

Which electromagnetic waves are used by doctors to detect broken bones inside your body?

• X-Rays

• Gamma Rays

• Ultraviolet Rays

• Infrared Rays

Which has the shortest wavelength and the highest frequency/most energy?
Hint: These waves are also used in cancer treatments.

• Gamma Rays

• Radio Waves

• Ultraviolet Rays

• X-rays

These waves from the sun cause sunburn.

• Gamma
• Microwaves
• Radio
• Ultraviolet

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

• Microwaves, visible light, UV rays

• Gamma rays, microwaves, UV rays

• Infrared rays, radio waves, x-rays

• X-rays, visible light, radio waves

Which of the following has higher frequency than ultraviolet rays?

• Visible light

• Infrared rays

• X-rays

• Microwaves

Which of the following has wavelengths longer than microwaves?

• Infrared waves
• Radio waves
• Visible light

Which of the following is an example of a wave with a long wavelength and low frequency?

• Gamma rays

• Infrared

• Radio

• Visible light