Waves Review

Concepts

1. Draw and label all components of both a transverse and longitudinal wave.

1. What are the three ways to determine the wavelength?

1. What does amplitude measure?

1. How do you calculate wave speed? Frequency? Wavelength? Period?

1. What is the relationship between frequency and wavelength? Between frequency and period?

1. What are the two forms of interference? Draw an example of each.

1. How do you determine the time it takes for an echo to reflect back to you? How do you determine how far an object is away from you based on an echo?

1. What is the Doppler effect and how do you calculate perceived frequency?

1. What is the difference between a mechanical wave and an electromagnetic wave? Give at least 3 differences between each and an example of each.

1. What are the six different light wave behaviors? Give an example and draw each.

Calculations

An automatic focus camera is able to focus on objects by use of an ultrasonic sound wave. The camera sends out sound waves that reflect off distant objects and return to the camera. A sensor detects the time it takes for the waves to return and then determines the distance an object is from the camera.

1. If a sound wave returns to the camera 0.115 seconds after leaving the camera, how far away is the object?

There is a thunderstorm and a lightning strike some distance from your home. The light reaches you nearly immediately, yet the thunder is heard 3.5 seconds later.

1. How far away is your home from the lightning strike?

1. How long did it take for the light to reach your eyes?

An automobile is traveling away from Jack and towards Jill at 18 m/s. The horn is honking, producing a sound wavelength of 0.56 m.

1. What is the actual frequency of the sound wave?

1. What is the perceived frequency that Jack hears?

1. What is the frequency that Jill hears?

1. Who hears a higher pitch and who hears a lower pitch?