EARTH: AN INTRODUCTION TO PHYSICAL GEOLOGY

Chapter 20: Shorelines

Concept #2 Quiz

Choose the best possible answer to the following questions about Key Concept 2 "Waves and their erosive activity."

breaking_waves3_corel_shad.jpg

1. An ocean water wave is energy that is the direct result of the transfer of energy from which source? [Hint]

2. If ocean waves are formed by wind over the ocean, and storm winds cause the largest ocean waves, why do waves occur on "calm" days? [Hint]

3.

Identify each of the indicated parts of a wave by selecting the correct response. (Wave diagram copyright © Prentice Hall, Inc.)  

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through D appear on an image associated with this question.

4.

Match the following terms associated with waves with the appropriate description:  

Using the pulldown boxes, match each item on the left to the corresponding item at right.

A. a depth equal to one half the wavelength measured from the midpoint of the waveform
B. the level the water would occupy if there were no waves
C. formed at the moment the wave has grown so tall that it topples over
D. the time it takes one full wave – one wavelength – to pass a fixed position
E. the distance the wind (that formed the wave) has traveled over open water
 

5. At what point is a wave “fully developed,” or at its largest size possible?  

6. Waves change to a “cresting” stage at what point, then leading to a “crash” onto the shore? [Hint]

7.

Choose the best description for each location of the diagram:  

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through D appear on an image associated with this question.

8. Which of the following best describes the relation between “swash” and “backwash”? [Hint]

9. How can crashing storm waves generate explosive forces and stresses on rocky outcrops and manmade structures?  

Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
 




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