Unit 7 Exam - Waves

Waves in a large body of water encounter a barrier with a small opening. The change in shape of the waves is shown in the diagram below. Which phenomenon is represented by the diagram? SPS9.c (DOK 1)

• Refraction
• Reflection
• Diffraction
• Interference

Tags

NGSS.MS-PS4-2

Which type of wave interaction is best demonstrated in the picture below? SPS9.c (DOK 2)

• Refraction
• Reflection
• Transmission
• Absorption

Tags

NGSS.MS-PS4-2

The picture below shows a light ray hitting a surface, without being able to pass through and doesn’t bounce back. Which type of light behavior does this demonstrate? SPS9c (DOK 1)

• Absorption
• Reflection
• Refraction
• Diffraction

Tags

NGSS.MS-PS4-2

When the pitch of a musical note increases, what characteristic of the sound wave also increases? SPS9.a (DOK 2)

• Amplitude
• Frequency
• Period
• Wavelength

Tags

NGSS.MS-PS4-1

Wave A and Wave B have the same amplitude. Which description best explains the resulting wave when Wave A is added to Wave B? SPS9.e (DOK 2)

• The resulting wave will have the same amplitude as the original waves.
• The resulting wave will have a smaller amplitude than the original waves.
• The resulting wave will have an amplitude of 0.
• The resulting wave will have a greater amplitude than the original waves.

Tags

NGSS.MS-PS4-1

Why can sound NOT travel through a vacuum (the absence of matter)? SPS9.d (DOK 2)

• The vacuum does not have any particles that are required to transport the sound waves.
• The vacuum has too many particles that are packed too closely to transport sound waves.
• The vacuum has particles that are too small to transport the sound waves.
• The vacuum has the incorrect type of particles to transport sound waves.

The table shows the speed of sound waves in different media. Based on the table, sound waves travel faster in which medium? SPS9.d (DOK 2)

• gases because sound wave vibrations travel quickly through molecules that are farther apart
• solids because sound wave vibrations travel quickly through molecules that are farther apart
• gases because sound wave vibrations travel quickly through molecules that are closer together
• solids because sound wave vibrations travel quickly through molecules that are closer together

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The table shows the speed of light in three states of matter. Under what conditions, would the speed of light decrease? SPS9.d (DOK 2)

• when the light travels from water to air
• when the light travels from air to water
• when the light travels from glass to air
• when the light travels from glass to water

A police car emits a siren at a constant frequency. Two observers can hear the siren. Their positions are shown on the diagram. How is the sound heard by observer X compared to observer Y? SPS9.e (DOK 2)

• The sound heard by observer X has a lower pitch.
• The sounds heard by both observers have a lower pitch than the emitted sound.
• The sounds heard by both observers have the same pitch as the emitted sound.
• The sound heard by observer X has a higher pitch.

The model shows a train leaving point A and approaching point B. Which statement best describes a change in the sound wave associated with the Doppler effect? SPS9.e (DOK 2)

• The energy of the wave decreases as the train approaches point B.
• The wavelength becomes shorter as the train approaches point B.
• The pitch of the wave becomes lower as the train approaches point B.
• The frequency of the wave decreases as the train approaches point B.

Tags

NGSS.HS-PS4-1