EMS Review

Match the following

• Used in cell phone communication and police radar systems

• Microwaves

• Has the longest wavelengths and the lowest frequency

• Gamma Rays

• It is used in thermal imaging

• Infrared rays

• Has the highest energy of all electromagnetic radiation and is the most damaging to human tissue

• Radio waves

• Overexposure to this can result in sunburns and skin cancer

• UV rays

Radiant energy spreads out from its source in all directions.

• True

• False

Both X-rays and gamma rays have higher frequencies than ultraviolet rays.

• True

• False

Communicating with satellites is an application of gamma rays.

• True

• False

Reorder the following according to the spectrum

• yellow

• blue

• red

• orange

• green

Reorder the following from shortest wavelength to the longest wavelength.

• visible light

• x-rays

• gamma waves

• infrared rays

• ultraviolet waves

Reorder the following from longest wavelength to the shortest wavelength.

• x-rays

• infrared

• radio waves

• gamma waves

• microwaves

The electromagnetic spectrum is a continuous range of ______ for electromagnetic radiation.

• light

• frequencies

• particles

• magnestism

Which has more energy?

• radio/tv waves

• infrared

Which has a higher frequency?

• visible light

• ultraviolet rays