regular em exam

Which of the following electromagnetic waves has the lowest energy?

• gamma ray

• infrared wave

• visible light wave

• microwave

Which section of the spectrum is the ONLY one we can see?

• X-rays
• Visible Light
• Gamma Rays
• Ultraviolet Rays

Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy

• Radio waves

• Ultraviolet Rays

• Gamma Rays

• X-rays

Electromagnetic waves do not require a medium to travel.

• True

• False

Cell phones transmit and receive ______ waves.

• infrared

• radio

• gamma

• micra

What is the description for radio waves?

• have the least amount of energy

• allows for night vision

• see broken bones

• kills cancer cells

What is the description for gamma rays?

• causes skin to tan

• kills cancer cells

• used for night vision

• used in cell phones

What is the description for infrared rays?

• allows night vision

• kills cancer cells

• causes skin to tan

• used in cell phones

Which type of EM waves has the shortest wavelength?

• radio wave

• visible light

• gamma ray

• ultraviolet

what happens to the frequency of a wave as wavelength increases?

• increases

• decreases

• remains constant

• diminishes to zero