WAVES Unit 4 Review

What is the biggest difference between mechanical waves and electromagnetic waves?

• EM waves, like sound, require matter to travel, while mechanical waves, like light, can travel through a vaccum.

• EM waves can only travel through gases and liquids, while mechanical waves can only travel through liquids and solids.

• Mechanical waves, like sound, need matter to travel, while EM waves, like light can travel through a vacuum.

• EM waves can travel in compression waves that you hear and mechanical waves are transverse waves you can see.

What is being modeled in this image?

• Sound waves only because light doesn't do this

• Both sound and light waves.

• Just light waves because sound can only be scattered by glass

• Light and sound waves cannot interact at the same time.

Which of these best describe a longitudinal wave?

• particles move at a right angle to the wave

• transverse waves include EM waves

• include compressions and rarefactions

• include crests and troughs

• particles move parallel to the wave

Which of these best describe a transverse wave?

• particles move at a right angle to the wave

• transverse waves include EM waves

• include compressions and rarefactions

• include crests and troughs

• particles move parallel to the wave

Which describe a longitudinal wave?

• particles move parallel to the wave

• include crests and troughs

• include compressions and rarefactions

• include sound waves

What is the relationship between energy and EM waves?

• the more energy a wave carries, the more dangerous it is

• waves with high energy occur less often

• waves with low energy have the shortest wavelength

• energy is not in the EM spectrum

Which shows the waves from least energy to most energy?

• micro, gamma, infrared, x-ray

• gamma, UV, infrared, radio

• Visible, micro, x-ray, gamma

• radio, infrared, UV, gamma

What happens to EM waves if you increase the frequency?

• energy increases, wavelength decreases

• energy and wavelength decrease

• energy and wavelength increase

• energy decreases, wavelength increases

What is the relationship between the EM spectrum and energy?

• there isn't one

• wavelength is inversely proportional to energy

• energy decreases as you move from left to right

• wavelength is directly proportional to energy

Which wavelength is used to detect thermal energy?

• UV

• X-ray

• Microwave

• Infrared