Physics: Waves: Sound and Light Properties
Comparing how sound and light waves travel, reflect, refract, and carry energy
Comparing how sound and light waves travel, reflect, refract, and carry energy
Physics - Grade 6-8
- 1
A student taps a metal desk and hears a sound. Explain how the sound travels from the desk to the student's ear.
- 2
Light from the Sun can reach Earth through space, but sound from the Sun cannot. Explain why.
- 3
Two sound waves are shown. Wave A has a larger amplitude than Wave B, but both have the same frequency. Which sound is louder, and why?
- 4
A flute plays a note with a high pitch. A tuba plays a note with a low pitch. Compare the frequencies of the two sounds.
- 5
A wave has a frequency of 5 hertz and a wavelength of 2 meters. Use the formula speed = frequency × wavelength to find the wave speed.
- 6
A sound wave travels through air at about 340 meters per second. If the sound has a frequency of 170 hertz, what is its wavelength? Use wavelength = speed ÷ frequency.
- 7
A student shines a flashlight at a mirror. The beam bounces off the mirror. Identify the wave behavior and describe what happens.
- 8
A pencil looks bent when it is placed in a glass of water. Identify the wave behavior that causes this effect and explain it.
- 9
A black shirt feels warmer than a white shirt in bright sunlight. Use wave properties to explain why.
- 10
Classify each material as mostly transparent, translucent, or opaque: clear window glass, wax paper, and a wooden door.
- 11
A teacher claps once in a gym and hears the sound repeat a moment later. What is this repeated sound called, and what causes it?
- 12
Visible light is part of the electromagnetic spectrum. Arrange these colors from shortest wavelength to longest wavelength: red, violet, green.
- 13
A siren seems higher-pitched as an ambulance moves toward you and lower-pitched as it moves away. Name this effect and explain what changes.
- 14
A student says, 'A louder sound must be traveling faster than a quieter sound in the same room.' Explain whether the student is correct.
- 15
Compare sound waves and light waves by listing one way they are similar and one way they are different.
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