Name/#:______Date:______

Light and Sound Test

Multiple Choice: Circle the best answer choice

1. Which of the following is an example of a translucent material? a. Aluminum foil b. Wax paper c. Stained glass window d. Both b and c 2. Your desk is an example of which type of material? a. Transparent b. Translucent c. Opaque d. Light source 3. Light bouncing off an object is called ______. a. Reflection b. Refraction c. Absorption d. Magnification 4. Why do blueberries look blue? a. They reflect all light. b. They absorb all light. c. They reflect blue light. d. They absorb blue light. 5. Which changes when you change the volume of a sound? a. Amplitude b. Frequency c. Pitch d. Wavelength 6. The lens in a magnifying glass makes objects look bigger because it a. Absorbs light b. Reflects light c. Refracts light d. Separates light

7. A band instrument that plays at a low pitch also has a low ______. a. Amplitude b. Frequency c. Volume d. Resting point 8. What is the best way to determine if a material is transparent, translucent, or opaque? a. Strike it with a hammer. b. Feel its surface. c. Listen to the sound it makes. d. Shine a light on it. 9. Which type of surface reflects light MOST clearly? a. Angled and dark b. Smooth and shiny c. Curved and clear d. Dark and bumpy 10. Jeff’s backpack reflects green light. It absorbs all other colors of light. What color is Jeff’s backpack? a. Black b. White c. Green d. Blue 11. Virginia is holding an object that is transparent. This object is used to separate white light into colors. What is the object Virginia is holding? a. Lens b. Magnifying glass c. Mirror d. Prism 12. Which type of material allows all light to pass through it? a. Opaque b. Transparent c. Translucent d. Reflective 13. What will happen to light waves that strike the surface of a window? a. They will be absorbed. b. They will be reflected. c. They will be refracted. d. They will pass through the window. 14. In which of the following would you MOST LIKELY see your reflection? a. Cardboard box b. Rusty metal key c. Shiny metal spoon d. Wrinkled aluminum foil

15. Which describes why a strawberry is red? a. It absorbs red light. b. It reflects red light. c. It refracts red light. d. It reflects all light except red. 16. How do the lenses in eyeglasses help correct a person’s vision? a. They bend light. b. They reflect light. c. They absorb light. d. They separate white light into colors. 17. Which object is opaque along its edges, but transparent in the center? a. The Pacific Ocean b. A donut c. A dog’s head d. A bottle of cooking oil 18. How are light and sound ALIKE? a. Both travel as rays. b. Both can change in pitch. c. Both depend on vibrations in air. d. Both are forms of energy that travel as waves. 19. Which happens when a violin string is plucked? a. Sound waves move in one direction. b. Sound waves move through the string. c. The string produces sound waves. d. The string absorbs sound waves. 20.Anthony’s voice is pitched lower than Marie’s voice. Which is true? a. Marie speaks at a higher volume Anthony. b. Anthony can speak at a higher amplitude than Virginia. c. Virginia speaks at a greater range of frequencies than Anthony. d. Anthony’s vocal cords vibrate at a lower frequency than Virginia’s. 21. Sound travels FASTEST through which of these materials? a. Air b. Empty space c. Wood d. Water 22. A Eileen is in a sound lab is counting the number of troughs of sound waves that pass every second. What is she measuring? a. Amplitude b. Wave frequency c. Wave height d. Wavelength

23.Which is the BEST description of how sound is produced by someone playing a guitar? a. The strings produce transverse waves of energy. b. When the strings are plucked, air particles vibrate. c. The strings transfer energy from the player’s hands. d. The player’s fingers cause air particles to move across the room. 24. What should you change to lower the pitch of a sound wave? a. Speed b. Amplitude c. Frequency d. Crest

Translucent, Transparent, or Opaque? Match the object on the left with its correct description on the right. Answer choices WILL be used more than once.

25. ______clean water a. Transparent 26. ______aluminum foil b. Translucent 27. ______your desk c. Opaque 28. ______stained glass window 29. ______magnifying glass 30. ______concave lens 31. ______wax paper 32. ______brick wall

Short Answer: Answer the questions in complete sentences.

33. Explain the difference between pitch and volume.

34. Explain the difference between reflection and refraction. Word Bank Label: Using the word bank, label the parts of the wave. Crest Trough Resting Point Wavelength Amplitude

5

1. ______2. ______3. ______4. ______5. ______

**Bonus**

1. Give an example of each of the following:

a. Carnivore: ______

b. Omnivore: ______

c. Herbivore: ______