PS Checkpoint 4 Reveiw

A person sees a fish in a pond at a different location than where it actually is. What phenomenon explains this?

• Reflection

• Refraction

• Diffraction

• Interference

Which of the following is true about different types of waves traveling through the same medium?

• They must all have the same speed.

• They must have the same wavelength.

• They may carry different amounts of energy.

• They must all be at the same distance from the source.

The "wave" created by fans in a stadium is an example of which type of wave?

• A transverse wave, where particles move parallel to wave motion

• A longitudinal wave, where particles move parallel to wave motion

• A transverse wave, where particles move perpendicular to wave motion

• A longitudinal wave, where particles move perpendicular to wave motion

Which of the following statements correctly compares electromagnetic waves?

• A wave with a higher frequency has a longer wavelength.

• A wave with a higher frequency has a shorter wavelength.

• A wave with a lower frequency has a shorter wavelength.

• A wave’s frequency has no effect on its wavelength.

Which transition would result in the greatest increase in the speed of a sound wave?

• Air to glass

• Glass to aluminum

• Aluminum to water

• Water to iron

A student places an electric bell inside a jar and removes the air with a vacuum pump. What will happen?

• The bell will continue to ring, and the sound will be heard.

• The bell will ring, but no sound will be heard.

• The bell will stop vibrating, and no sound will be heard.

• The bell will vibrate, and the sound will be louder than before.

How do bats use sound waves to navigate in the dark?

• Refraction

• Reflection

• Conduction

• Amplification

A sound wave with a higher amplitude will have:

• A lower pitch

• A lower volume

• A greater energy intensity

• A lower frequency

Which of the following is the best description of how noise-canceling headphones work?

• They use destructive interference to cancel out unwanted sound waves.

• They use constructive interference to amplify external noise.

• They refract sound waves away from the listener.

• They absorb all incoming sound waves.

When two sound waves are added together in-phase, what happens to the resultant wave?

• It has a larger amplitude.

• It has a smaller amplitude.

• It remains the same.

• It is completely canceled out.