Unit 8: Waves Review

Unit 8: Waves Review

By Maria Cerca

2 types of Waves

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Multiple Select

Which of the following requires matter in order to transport energy. Select more than one answer.

• Mechanical

• Transverse

• Longitudinal

• Electromagnetic

• Light

Multiple Select

Which of the following DOES NOT requires matter in order to transport energy. Select more than one answer.

• Mechanical

• Transverse

• Longitudinal

• Electromagnetic

• Light

Multiple Choice

A wave that where particles of the medium move perpendicular to the wave's direction.

• Transverse

• Longitudinal

• Wavelength

• Frequency

I​n this example, the wave moves to the right and a particle on the wave moves up and down or perpendicular.

Multiple Choice

A wave that where particles of the medium move parallel to the wave's direction.

• Transverse

• Longitudinal

• Wavelength

• Frequency

I​n this example, the wave moves to the right and a particle on the wave moves back and forth in the same direction or parallel.

Multiple Choice

Identify the type of wave that can be transmitted through a vacuum (empty space)?

• Sound

• Light

• Water

• Slinky

Light Wave

​

​Light does not require a medium in order to transport energy. Space is considered a vacuum since it is not composed of any matter.

Multiple Choice

Waves X and Y combine as shown. What type of wave behavior is this?

• Summative

• Constructive

• Destructive

• Additive

Constructive Interference

​

When the crest of Wave X overlaps with the crest of Wave Y, a wave with a greater amplitude is produced.

Fill in the Blank

How many waves makeup Wave X?

Three​

A single wave is composed a crest and a trough. These waves are composed of 3 full crests and 3 full troughs.

Fill in the Blank

Calculate the speed of the wave. Make sure that you include the appropriate units with the answer.

16 m/s

Multiple Choice

Find the frequency of a light wave with a wavelength of $$510\ \times\ 10^{-9}$$  m. Make sure that you include the appropriate units with the answer. Round your answer to the tenths.

• $$5.9\ \times\ 10^{14\ }Hz$$

• 153 Hz

• $$1.7\ \times\ 10^{-15\ }Hz$$  

• $$1.7\ \times\ 10^{-15\ }Hz$$  

​f = 5.9 × 10¹⁴ Hz

Multiple Choice

Identify the wave behavior. Echolocation is when a sound wave bounces off a surface.

• Diffraction

• Refraction

• Reflection 

• Resonance 

• Doppler Effect

Multiple Choice

Identify the wave behavior. Waves bend around a barrier or through an opening and bend.

• Diffraction

• Refraction

• Reflection 

• Resonance 

• Doppler Effect

Multiple Choice

Identify the wave behavior. As light passes through different media, the wave bends because the light changes speed.

• Diffraction

• Refraction

• Reflection 

• Resonance 

• Doppler Effect

Multiple Choice

Identify the wave behavior. The natural frequency of both objects is nearly similar or the same. When the first tuning fork is struck, it will cause the second tuning fork to begin to vibrate.

• Diffraction

• Refraction

• Reflection 

• Resonance 

• Doppler Effect

Multiple Choice

Identify the wave behavior. As an object approaches, the sound appears to be a higher pitch than when the object is moving away.

• Diffraction

• Refraction

• Reflection 

• Resonance 

• Doppler Effect

Multiple Choice

Identify the wave behavior. As the two waves collide, the waves that are produced collide ___.

• constructively

• destructively

• both

• neither

Multiple Choice

Electromagnetic (Light) waves travel the fastest through a ___.

• Vacuum

• Gas

• Liquid

• Solid

Vacuum

​

Electromagnetic (Light) waves travel the fastest through a vacuum and decrease speed as the wave moves through a gas, to liquid, to gas.

Multiple Choice

Sound (Mechanical) waves travel the fastest through a ___.

• Vacuum

• Gas

• Liquid

• Solid

Solid

​

Electromagnetic (Light) waves travel the fastest through a solid and decrease speed as the wave moves through a liquid, to gas. Sound waves and other mechanical waves cannot travel through the vacuum of space.

Multiple Choice

___ is the number of waves that pass per one second.

• Frequency

• Period

• Wavelength

• Amplitude

Multiple Choice

When a light wave moves from one medium to another, it will change ___.

• Amplitude

• Speed

• Wavelength

• Frequency

Multiple Choice

Which of the following measures the amount of energy a wave carries?

• Amplitude

• Speed

• Wavelength

• Frequency

Multiple Choice

If I increase the frequency of wave, then I also increase the speed of the wave.

• False

• True

Factors affecting Wave Speed

• The density or state of matter.

• For example, Sound travels the fastest in a more dense medium.

• Changing the temperature of the medium also affects the speed of the wave.

• Frequency does not affect the wave speed. ​

Multiple Choice

Sound is a ____ wave.

• Transverse

• Longitudinal

• Beats

• Property

Longitudinal Wave

​

Multiple Choice

Light is a ____ wave.

• Transverse

• Longitudinal

• Beats

• Property

Transverse Wave

​

​Light is a combination of two transverse waves that are perpendicular to each other.

Fill in the Blank

If I place an object 7 cm in front of this plane mirror, the image appears to be ___ behind the mirror.

Equal

• In a plane mirror, angles of incidence and angles of reflection are EQUAL.

• An object in front of the mirror appears to always be at equal distance behind the mirror.

• Images are always Upright and Same size as the object. ​

Multiple Select

The image produced will be ___ and ___. Visualize where the other 2 rays are drawn. Select more than one answer

• Real

• Virtual

• Upright

• Inverted

Multiple Select

The image produced will be ___. Visualize where the other 2 rays are drawn.

• Reduced

• Magnified

Multiple Select

The image produced will be ___ and ___. Visualize where the other 2 rays are drawn. Select more than one answer

• Real

• Virtual

• Upright

• Inverted

Multiple Choice

The image produced will be ___. Visualize where the other 2 rays are drawn.

• Magnified

• Reduced