[7th] Exam 2 Review

Electromagnetic waves with the SHORTEST wavelengths and highest frequencies are ________. They have the greatest amount of energy of all the electromagnetic waves. (i.e. can be used for cancer treatments)

• microwaves

• x-rays

• radio waves

• gamma rays

Electromagnetic waves with wavelengths shorter than those of ultraviolet rays are ________. They can carry more energy than ultraviolet rays and can penetrate most matter. (dense matter such as bones absorb these waves)

• x-rays

• visible light

• gamma rays

• radio waves

__________ have higher frequencies than visible light, and carry more energy. Electromagnetic waves with wavelengths just shorter than those of visible light. (sunscreen protects your skin from these!)

• radio waves

• x-rays

• ultraviolet rays

• gamma rays

Electromagnetic waves that you can see are called __________. They have shorter wavelengths and higher frequencies than infrared rays.

• microwaves

• radio waves

• visible light

• x-rays

____________ electromagnetic waves with wavelengths shorter than those of microwaves. (i.e. thermograms)

• radio waves

• microwaves

• infrared rays

• gamma rays

___________ shorter wavelengths and higher frequencies than radio waves. (i.e. radar guns are used by baseball players and the police)

• radio waves

• microwaves

• gamma rays

• visible light

Transmits ___________ along a network that connects mobile phones to each other, to the internet, and other networks.

• radio waves

• microwaves

• visible light

• gamma rays

Higher frequency waves have more energy, while lower frequency waves have less energy.

• true

• false

Waves with the shortest wavelength have the highest frequencies.

• true

• false

Electromagnetic waves do require a medium such as air, so they can transfer energy through a vacuum.

• true

• false