chapter 21 section 2 handout ocean waves. matching 1.wave period 2.crest 3.wave height 4.wave...
TRANSCRIPT
![Page 1: Chapter 21 Section 2 Handout Ocean Waves. Matching 1.wave period 2.crest 3.wave height 4.wave 5.wavelength 6.trough a.the lowest point between two crests](https://reader036.vdocuments.us/reader036/viewer/2022062305/56649ec15503460f94bcd458/html5/thumbnails/1.jpg)
Chapter 21 Section 2 Handout
Ocean Waves
![Page 2: Chapter 21 Section 2 Handout Ocean Waves. Matching 1.wave period 2.crest 3.wave height 4.wave 5.wavelength 6.trough a.the lowest point between two crests](https://reader036.vdocuments.us/reader036/viewer/2022062305/56649ec15503460f94bcd458/html5/thumbnails/2.jpg)
Matching
1. wave period2. crest3. wave height4. wave5. wavelength6. trough
a. the lowest point between two crests of a wave
b. the vertical distance between the crest and the trough of a wave
c. a periodic disturbance in a solid, liquid, or gas as energy is transmitted through it
d. the highest point of a wavee. the time required for two
consecutive wave crests to pass a given point
f. the horizontal distance between two consecutive crests or two consecutive troughs
![Page 3: Chapter 21 Section 2 Handout Ocean Waves. Matching 1.wave period 2.crest 3.wave height 4.wave 5.wavelength 6.trough a.the lowest point between two crests](https://reader036.vdocuments.us/reader036/viewer/2022062305/56649ec15503460f94bcd458/html5/thumbnails/3.jpg)
7
• The formula for calculating the speed at which a wave moves is– wave speed = wavelength / wave period
![Page 4: Chapter 21 Section 2 Handout Ocean Waves. Matching 1.wave period 2.crest 3.wave height 4.wave 5.wavelength 6.trough a.the lowest point between two crests](https://reader036.vdocuments.us/reader036/viewer/2022062305/56649ec15503460f94bcd458/html5/thumbnails/4.jpg)
8
• Moving air caused by the uneven heating of Earth’s atmosphere is called _______.– wind
![Page 5: Chapter 21 Section 2 Handout Ocean Waves. Matching 1.wave period 2.crest 3.wave height 4.wave 5.wavelength 6.trough a.the lowest point between two crests](https://reader036.vdocuments.us/reader036/viewer/2022062305/56649ec15503460f94bcd458/html5/thumbnails/5.jpg)
9
• What causes small waves or ripples to form on the ocean?– Friction from moving air and water.
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10
• What causes a wave to become larger?– The longer the wind blows from a given
direction, the more energy is given to water.
![Page 7: Chapter 21 Section 2 Handout Ocean Waves. Matching 1.wave period 2.crest 3.wave height 4.wave 5.wavelength 6.trough a.the lowest point between two crests](https://reader036.vdocuments.us/reader036/viewer/2022062305/56649ec15503460f94bcd458/html5/thumbnails/7.jpg)
11
• Explain why larger wave tend to grow larger and smaller waves die out.– Large waves have a larger surface area and
receive more energy from wind than smaller waves.
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20
• What kind of wind produces very large waves?– Steady high winds that blow across a long
fetch.
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21
• What kind of wind produces choppy water with waves of various heights and lengths?– strong, gusty winds
![Page 10: Chapter 21 Section 2 Handout Ocean Waves. Matching 1.wave period 2.crest 3.wave height 4.wave 5.wavelength 6.trough a.the lowest point between two crests](https://reader036.vdocuments.us/reader036/viewer/2022062305/56649ec15503460f94bcd458/html5/thumbnails/10.jpg)
22
• One of a group of long, rolling waves of similar size is called a(n) ____________.– swell.
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23
• What causes a whitecap to form?– When winds blow the crest of a wave off.
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24
• Why could whitecaps possibly have an effect on climate?– They reflect solar radiation keeping the ocean
water cool.
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25
• At what point does a wave touch the ocean bottom in shallow water near the coastline.– Where the depth of water is about half the
wavelength.
![Page 14: Chapter 21 Section 2 Handout Ocean Waves. Matching 1.wave period 2.crest 3.wave height 4.wave 5.wavelength 6.trough a.the lowest point between two crests](https://reader036.vdocuments.us/reader036/viewer/2022062305/56649ec15503460f94bcd458/html5/thumbnails/14.jpg)
26
• What causes a wave near the coastline to break?– The bottom of the wave is slowed by friction
but the top of the wave continues moving fast.
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27
• A foamy mass of water that washes onto the coastline is called a(n) ________.– breaker.
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28
• What is the height of a wave when it breaks?– One to two times the height of the original
wave.
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39
• A current that forms when waves approach the beach at an angle is called a(n) ______________.– longshore current.
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40
• Longshore currents flow _________ to the shore.– parallel
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41
• Explain how a sandbar forms.– If there is a bay or an inlet along the shoreline
where waves retract, sand carried by longshore currents is deposited as wave energy lessons.
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42
• Which of the following is the most common cause of tsunamis?– earthquakes on the ocean floor
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43
• Why is it incorrect to call a tsunami a tidal wave?– because a tsunami is not caused by tides
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44
• The wave height of a tsunami in deep water is usually– less than 1 m.
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45
• The wavelength of a tsunami in deep water may be as long as– 500 km.
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46
• A tsunami has a huge amount of energy because of– its long wavelength.
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The End
• http://www.youtube.com/watch?v=Ok5LH8RqrV4&NR=1