PHY-102: Wave, Sound, and Light Exercises
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PHY-102: Wave, Sound, and Light Exercises
PHY-102: Wave, Sound, and Light Exercises
Complete the following exercises.
- What is the source of all waves?
- A water wave vibrates up and down four times each second, the distance between two successive crests is 5 meters, and the height from the lowest part to the highest part of the wave is 2 meters.
- What is the frequency of the wave in hertz?
- What is the period of the wave in seconds?
- What is the speed of the wave in meters per seconds?
- What is the amplitude of the wave in meters?
- When you sit in the stands at a baseball stadium, you will hear the crack of the bat a short time after you see the batter hit the ball. Explain.
- Why is the moon sometimes described as silent?
- You are hiking in a canyon and you notice an echo. You decide to let put a yell and notice it took 2 seconds before you heard the echo of your yell. How far away is the canyon wall that reflected your yell?
- Explain how the Doppler effect is used by the police to measure the speed of a car.
- The light from the sun has higher frequencies from one side of the sun than from the other side. What does that tell you about the sun?
- What is the source of all electromagnetic waves?
- Why is the lettering on the front of an ambulance “backwards” (see figure below)?
- What do radio waves, microwaves, light, and x-rays have in common?
- Rank the following electromagnetic waves in order of increasing frequency.
- Microwaves
- Radio waves
- Ultraviolet radiation
- Visible light
- X-rays
- Infrared radiation
- During a lunar eclipse the moon is in the shadow of the Earth. Why does the moon have a faint red color during the eclipse?
- The distance from the sun to the Earth is 1.5 x 1011 m. How long does it take for light from the sun to reach the earth? Give your answer in seconds.
- Why are polarized sunglasses particularly effective in reducing glare?
- Match the following colored objects with the way in which the colors are produced.
1) Red rose
2) Rainbow
3) Oil film
4) Peacock feather
5) Blue sky
- Scattering
- Refraction
- Diffraction
- Interference
- Selective reflection
The remaining questions are multiple-choice questions:
- If the frequency of a vibration is doubled, what happens to the period?
- The period is doubled.
- The period remains the same.
- The period is reduced to one-quarter.
- The period is reduced to one-half
- The period is quadrupled.
- What is the distance between two successive crests on a transverse wave called?
- Wavelength
- Period
- Amplitude
- Frequency
- Compression
- Noise-cancelling earphones use which of the following phenomena?
- Frequency
- Constructive interference
- Destructive interference
- Resonance
- Beats
- If the sun were to suddenly “turn off’, we would not know about it for about 8 minutes. Why?
- It would take about 8 minutes to realize what happened because of the darkness.
- It takes about 8 minutes for the sun to “power down”.
- It takes about 8 minutes for Earth to spin around so we can see the sun.
- It takes about 8 minutes for the light to travel from the sun to Earth.
- If the atmosphere was much thicker than it is now, how would the sun appear?
- The sun would appear the same.
- The sun would appear blue-violet.
- The sun would appear green-blue.
- The sun would appear red-orange.
- The sun would appear yellow-green.
- If you dip your finger in a tub of water at a constant rate, concentric circular waves with a constant spacing (wavelength) will form. If you double the frequency at which you dip your finger, what will happen to the wavelength?
- The wavelength is reduced to one-quarter.
- The wavelength is reduced to one-half.
- The wavelength is quadrupled.
- The wavelength is doubled.
- The wavelength remains the same.
- If you hear the clap of a thunder 5 seconds after seeing the flash of lightning, how far away from you did the lightning strike?
- About 5 miles
- About 5 kilometers
- About 1 mile
- About 1 kilometer
- What are the three paint colors used for color subtraction?
- Red, yellow, and blue
- Red, green, and blue
- Orange, purple, and green
- Magenta, green, and yellow
- Magenta, cyan, and yellow
- If you shine a beam of red light and a beam of green light on the same area of a screen, what color will you see on the screen?
- Red
- Green
- White
- Yellow
- Cyan
- Magenta
- If you mix equal amounts of cyan pigments and magenta pigments on a sheet of white paper, what color will you see on the paper?
- Red
- Blue
- Black
- Yellow
- Cyan
- Magenta
RUBRIC
Excellent Quality
95-100%
Introduction 45-41 points
The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Literature Support
91-84 points
The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Methodology
58-53 points
Content is well-organized with headings for each slide and bulleted lists to group related material as needed. Use of font, color, graphics, effects, etc. to enhance readability and presentation content is excellent. Length requirements of 10 slides/pages or less is met.
Average Score
50-85%
40-38 points
More depth/detail for the background and significance is needed, or the research detail is not clear. No search history information is provided.
83-76 points
Review of relevant theoretical literature is evident, but there is little integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are included. Summary of information presented is included. Conclusion may not contain a biblical integration.
52-49 points
Content is somewhat organized, but no structure is apparent. The use of font, color, graphics, effects, etc. is occasionally detracting to the presentation content. Length requirements may not be met.
Poor Quality
0-45%
37-1 points
The background and/or significance are missing. No search history information is provided.
75-1 points
Review of relevant theoretical literature is evident, but there is no integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are not included in the summary of information presented. Conclusion does not contain a biblical integration.
48-1 points
There is no clear or logical organizational structure. No logical sequence is apparent. The use of font, color, graphics, effects etc. is often detracting to the presentation content. Length requirements may not be met
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