Waves

1. What object allows all light to pass through?

• A. a book
• B. a mirror
• C. a shadow
• D. a window

2.The sun is shining at a church with a stained -glass window. What happens?

• A. All of the light is reflected off the window.
• B. All of the light goes through the window.
• C. Some of the light passes through the window.
• D. Most of the light is absorbed by the window.

3. Light is a form of energy that travels in a wave. It does not need any material to carry its energy. Humans can see the range of light in the visible light spectrum. Based on this description, how is sound different from light?

• A. Sound does not travel in a wave.
• B. Sound is not a form of energy.
• C. Sound needs a material to carry its energy.
• D. Sound cannot be perceived by humans.

4. While hiking a mountain, Gwen called out, "Yoohoo!" She then heard her own voice say, "Yoohoo. Yoohoo. Yoohoo." What happened?

• A. The sound was completely absorbed by the mountain.
• B. The sound reflected back to Gwen as an echo.
• C. The sound was completely carried through the mountain away from Gwen.
• D. The sound didn't travel as a wave at all.

5. Which of the following would not produce a sound?

• A. humming a Flocabulary song in the hallway
• B. plucking a guitar string underwater
• C. knocking a fist against a wooden wall
• D. snapping your fingers where there is not matter, like in deep space

6. How can humans perceive sound?

• A. They can only hear it.
• B. They can only hear and see it.
• C. They can hear it, and might also see and feel it.
• D. Humans cannot perceive sound.

7. Which of these does NOT create waves?

• A. water in the ocen
• B. light from the sun
• C. sound from a radio
• D. rain from the sky

8. What is one thing that describes the motion of all waves?

• A. it's always fast
• B. it's always slow
• C. it always repeats
• D. it starts and stop

9. Look at the picture and then answer the question below. What do you call the measurement from the top of one wave to the top of the next?

• A. the peak
• B. the amplitude
• C. the wavelength
• D. the pattern

10. Shiny objects:

• A. reflect a lot of light
• B. absorb almost all of the light.
• C. allow all the light to pass through.
• D. allow most of the light to pass through.