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Practice Science Questions

Basic Light, Sound and Color

Go to science of light or science of sound.

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Click here for the Answers to Easy Light, Sound, and Color questions

1. Q: Which travels faster, sound or light?

A: Sound

B: Light

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2. Q: Which can travel through a vacuum (space with no substance)?

A: Light

B: Sound

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3. Q: Which type of waves are the longest?

A: Radar waves

B: Radio waves

C: Visible Light

D: Gamma Rays

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4. Q: About how fast is sound?

A: 100 feet per second

B: 500 feet per second

C: 1,100 feet per second

D: 10,000 feet per second

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5. Q: About how fast is light?

A: 1000 feet per second

B: 1000 miles per second

C: 10,000 miles per second

D: 186,000 miles per second

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6. Q: What travels faster than light?

A: microwaves

B: nothing

C: sound

D: air

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7. Q: What type of particles make up light?

A: air

B: atoms

C: molecules

D: photons

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8. Q: Which is not a primary color?

A: red

B: green

C: blue

D: yellow

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9. Q: What color do yellow and red make?

A: green

B: blue

C: orange

D: pink

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10. Q: If you add red, yellow, and blue light together what color light do you get?

A: white

B: black

C: brown

D: green

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11. Q: If you add red, yellow, and blue paint together what color of paint do you get?

A: white

B: brown

C: black

D: purple

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12. Q: What is it called when light rays are bent when passing from one substance to the next?

A: radiation

B: extraction

C: refraction

D: pointillism

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13. Q: If a wave has a short wavelength, what type of frequency does it have?

A: high

B: low

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14. Q: If a wave has a low frequency, what type of wavelength does it have?

A: long

B: short

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15. Q: What color does an object look that reflects light of all wavelengths in equal amounts?

A: white

B: black

C: red

D: blue

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16. Q: Which color of light has the longest wavelength?

A: purple

B: blue

C: green

D: red

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17. Q: A lens does which of the following?

A: Changes the direction of light

B: Makes an object appear smaller

C: Makes an object appear larger

D: All of the above

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18. Q: When looking through a covex lens will an object appear larger or smaller?

A: larger

B: smaller

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19. Q: When looking through a concave lens will an object appear larger or smaller?

A: larger

B: smaller

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20. Q: What is different about the light that makes up a laser beam versus the light from a flashlight?

A: Laser light has very little spread

B: Laser light is all the same wavelength

C: None of the above

D: All of the above

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21. Q: Which of the following is not an application for a laser?

A: To generate light.

B: To cut through concrete or steel.

C: To amplify light.

D: To re-attach a damaged eye retina.

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22. Q: What color is an object the absorbs light of all wavelengths?

A: white

B: black

C: blue

D: red

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23. Q: Does sound travel faster through air or water?

A: air

B: water

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24. Q: The more dense a material is the slower sound will travel through it?

A: TRUE

B: FALSE

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25. Q: What is the Doppler Effect?

A: When the volume of a sound changes as the object making the sound passes by you.

B: The echo made from another object.

C: When the frequency or pitch of a sound changes as the object making the sound passes by you.

D: The sound made when an object go faster than the speed of sound.

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26. Q: What is the unit of measure for the loudness of a sound?

A: Amps

B: Decibels

C: Hertz

D: Meters

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27. Q: About what frequency range can the average human hear?

A: 2Hz to 200Hz

B: 200Hz to 2000Hz

C: 20Hz to 20,000Hz

D: 200Hz to 200,000Hz

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28. Q: What is an echo?

A: Sound waves with changing frequencies.

B: Reflected sound waves.

C: Amplified sound waves.

D: The same as the Doppler Effect.

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29. Q: The phase of the waves in laser light is the same?

A: TRUE

B: FALSE

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30. Q: About how long does it take for light to travel from the sun?

A: 2 seconds

B: 30 seconds

C: 8 minutes

D: 1 hour

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Click here for the Answers to Easy Light, Sound, and Color questions

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