Wave Behavior and the Doppler Effect

Multiple Choice

This illustration best depicts which of the following behaviors?

• Reflection

• Refraction

• Diffraction

• Resonance

Multiple Choice

Which of the pictured is responsible for us being able to see objects?

• Transmission

• Reflection

• Refraction

• Scattering

• Absorption

Multiple Choice

The image depicts which of the following wave behaviors?

• Resonance

• Doppler Effect

• Polarization

• Diffraction

Open Ended

Type your FIRST and LAST name.

Open Ended

What physics period are you in?

Wave Behavior Check

Multiple Choice

This illustration best depicts which of the following behaviors?

• Reflection

• Refraction

• Diffraction

• Resonance

Multiple Choice

This image best depicts which of the following wave behaviors?

• Reflection

• Refraction

• Diffraction

• Resonance

Multiple Choice

This image depicts which of the following wave behaviors?

• Reflection

• Refraction

• Diffraction

• Resonance

Multiple Choice

Definition: When one object vibrating at the same natural frequency of a second object forces that second object into vibrational motion.

• Reflection

• Refraction

• Diffraction

• Resonance

Multiple Choice

The image depicts which of the following wave behaviors?

• Resonance

• Doppler Effect

• Interference

• Polarization

Multiple Choice

The two blue and purple waves undergo _________________ when they meet.

• Constructive interference

• Destructive interference

Multiple Choice

Definition: the change in direction of a wave passing from one medium to another

• Reflection

• Refraction

• Diffraction

• Polarization

Multiple Choice

The image of the two waves depicts

• Constructive interference

• Destructive interference

Multiple Choice

Definition: when a wave reaches the interface between two different media, typically some of the wave will bounce back into the original medium.

• Reflection

• Refraction

• Diffraction

• Polarization

Multiple Choice

Definition: The spreading out of waves as they pass through an opening or around objects.

• Reflection

• Refraction

• Diffraction

• Resonance

Multiple Choice

All waves carry 

• water
• light
• energy
• sound

Multiple Choice

What will be the result after these two waves overlap?

• A taller wave

• A shorter wave

• A wave with no amplitude

• 3 waves

Multiple Choice

The picture shows a prism. What property of waves causes the light to look like a rainbow as it exits the prism?

• Reflection

• Refraction

• Diffraction

Doppler Effect

​Doppler Effect

​The apparent change in frequency due to the relative motion of the source (or receiver) is called the Doppler effect.

​

​As a result of the change in frequency, the pitch of the sound produced is impacted.

​

​Frequency is same at A and B

​Shorter wavelength=

higher frequency

​Longer wavelength=

​Lower frequency

Multiple Choice

The pitch of a sound wave relates to the wave's _________________.

• Amplitude

• Frequency

• Wavelength

• Period

Multiple Choice

An ambulance is driving towards you as you stand on the sidewalk. What happens to the pitch of the siren as it comes towards you?

• It increases

• It decreases

Multiple Choice

You are standing on the side of the road when a police car races past you with its siren on. After the police car passes you, what happens to the pitch of the siren?

• It increases

• It decreases

• It turns red

Multiple Choice

Look at the picture. Who is experiencing a higher pitched sound?

• Observer A

• Observer B

• There's no difference

Multiple Choice

Long sound waves are...

• high pitched
• low pitched
• medium pitched

Multiple Choice

When the car moves AWAY from you, its horn seems...

• Low pitched
• High pitched
• Normal

Multiple Choice

What can you tell about this object's motion?

• Moving to the North (up).
• Moving to the South (down). 
• Moving to the West (left). 
• Moving to the East (right). 

Multiple Choice

What can you tell about the motion of this object?

• Moving left.
• Moving right quickly.
• Standing still. 
• Moving up slowly. 

Multiple Choice

The Doppler effect is seen when a wave-making source moves toward an observer. 

• True
• False

Multiple Choice

When an ambulance move TOWARD you it sounds ________ pitched. 

• high
• low
• medium

Multiple Choice

As the siren goes off in the PARKED car, the young felon at position X hears

• a higher pitch than if he were standing still

• a lower pitch than if he were standing still

• the same pitch he would if he were standing still

Multiple Choice

As the siren goes off in the PARKED car, the young felon at position Y hears

• a higher pitch than if she were standing still

• a lower pitch than if she were standing still

• the same pitch he would if she were standing still

Multiple Choice

As dad escapes from his kids, he hears them yelling

• lower pitched than they would normally.

• higher pitched than they would normally.

• the same pitch they would normally.

Multiple Choice

You are standing on the side of the road when a police car races past you with its siren on. After the police car passes you, what happens to the pitch of the siren?

• It increases

• It decreases

• It turns red

Multiple Choice

when the frequency is higher what happens to the wavelength?

• the wavelength gets longer

• The wavelength gets shorter

• the wavelength doesn't change

• I have no idea

Multiple Choice

What is the Doppler Effect?

• A change in frequency due to the relative motion of a wave source and an observer

• When a wave overlaps with another wave

• When a wave bounces off of another object

• When a wave bends due to traveling through a different medium