Review for the Waves, Sound, and Light Test
1. Compare and contrast reflection and refraction.
Both are ways in which waves behave.
Reflection – bouncing of a wave off of an object.
Refraction – bending of a wave as it moves from one medium to another.
2. Which types of waves have points called nodes that doe not move?
Standing Waves
3. Which part of a compressional wave has the lowest density?
Rarefaction
4. Compare and contrast refraction and diffraction.
Both deal with the bending of a wave.
Refraction – bending of a wave as it moves from one medium to another.
Diffraction – bending of a wave as it move around an obstacle.
5. What occurs when waves overlap?
They interfere and form a new wave.
6. What does frequency measure?
How many waves are passing a certain point in one second?
7. Which of the following do waves carry?
a. matter
b. energy
c. matter and energy
d. the medium
8. What is equal to the angle of reflection?
a. refraction angle
b. normal angel
c. bouncing angle
d. angle of incidence
9. A change in pitch or wave frequency due to a moving wave source is called
doppler effect.
10. For a sound with a low pitch, what else is always low? Frequency
11. What causes sound intensity to decrease? Amplitude
12. Sound can travel through all but which of the following?
a. solids b. liquids c. gases d. empty space
13. List the types of electromagnetic radiation in order beginning with the highest
frequency.
Gamma, x-ray, uv, visible, infrared, microwave, and radio waves
14. List the uses for each type of electromagnetic radiation.
Gamma – treatment of harmful cells X-ray – medical imaging
UV – tanning Visible – studying
Infrared – night vision microwave – cooking, communication
Radio wave – communication
15. Which type of electromagnetic wave is the most energetic?
Gamma
16. List the colors of the visible spectrum.
Red, orange, yellow, green, blue, indigo, and violet
17. Of those colors, which light has the shortest wavelength?
Violet
18. Describe the difference between translucent, opaque, and transparent materials.
Translucent – allows some light through
Opaque – does not allow light through
Transparent – allows almost all light through
19. The color an object appears depends on what color is reflected back to your eyes.
20. What color do you see when all colors are mixed? White
21. How are rainbows formed? Light is bent or refracted twice. Once when is enters the raindrop and another time when it leaves. Light waves change speed when moving from one medium to another. When this happens, we can see the different colors that make up the white light.