Unit 3 test: Waves, Sound, Light

Name (first and last)

Class Period

• 1A
• 1B
• 2A
• 2B
• 3A

Which point on the wave pictured below represents a trough? (6P 1.1)

• point 1
• point 2
• point 3
• point 4

This is a wave pattern diagram for two transverse waves. How do the waves compare? (6P1.1)

• Both waves have the same frequency
• Both waves have the same wavelength
• Wave 1 has a longer wavelength than wave 2
• Wave 1 has a higher frequency than wave 2

Which part of the eye is responsible for changing the size of the pupil to allow light to enter the eye? (6P 1.2)

• retina
• iris
• optic nerve
• cornea

The function of the retina is to (6P 1.2)

• protect the front of the eye
• send electrical signals to the brain
• allow light to enter the eye
• convert light waves to electrical signals

Which wave will have the highest pitch? (6P 1.3)

• wave A
• wave B
• wave C
• wave D

Margarita studied a graph of a mechanical wave. If she wanted to find out the wavelength, from which points should she measure? (6P 1.1)

• 1 to 3
• 1 to 5
• 3 to 4
• 3 to 5

Which of these factors affects how fast a sound wave moves? (6P 1.3)

• The kind of material it is moving through.
• The amplitude of the sound wave's vibrations
• The wavelength of the disturbance in the medium
• The type of motion that caused the sound wave to form.

Which portion of the electromagnetic spectrum are you able to see with your eyes? (6 P 1.2)

• Gamma rays
• Visible light
• Radio waves
• microwaves