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Fourth Grade (Grade 4) Waves and Sound Questions

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Grade 4 Waves and Sound
A devise that makes a beam of high-energy rays of light that can cut through steel is called a                .
  1. saw
  2. laser
  3. torch
Grade 4 Waves and Sound
What is the term for a range of light waves with different wavelengths and energies?
  1. visible spectrum
  2. invisible spectrum
  3. reflection
Grade 4 Waves and Sound
Which is true of a concave lens?
  1. Its center is thicker than its edges.
  2. It makes an image on a screen.
  3. It spreads light rays apart.
  4. It magnifies objects.
Grade 4 Waves and Sound
What tool might you use to split white light into colors?
  1. mirror
  2. convex lens
  3. prism
Grade 4 Waves and Sound
The farther an object is from the light source, the bigger the shadow.
  1. True
  2. False
Grade 4 Waves and Sound
Which does sound travel through the fastest?
  1. liquids
  2. solids
  3. gases
Grade 4 Waves and Sound
A lens that curves inward and spreads light rays apart, making objects look smaller, is a                 lens.
  1. concave
  2. convex
Grade 4 Waves and Sound
Mirrors and other smooth, shiny surfaces refract almost all the light that falls on them.
  1. True
  2. False
Grade 4 Waves and Sound
The form or shape sound travels in is called a        wave       .
Grade 4 Waves and Sound
A light ray is
  1. a thick band of energy.
  2. a thin band of energy.
  3. molecules in a line.
Grade 4 Waves and Sound
Materials can transmit, reflect, or absorb light.
  1. True
  2. False
Grade 4 Waves and Sound
Which of the following is translucent?
  1. cardboard
  2. tissue paper
  3. construction paper
  4. clear glass
Grade 4 Waves and Sound
A lens that bulges in the middle and brings light rays together, making objects look larger, is a                 lens.
  1. concave
  2. convex
Grade 4 Waves and Sound
A transparent object is one in which
  1. some light can travel through.
  2. no light can travel through.
  3. light can travel through undistorted.
Grade 4 Waves and Sound
A sound wave has areas called                 where particles are squeezed together.
  1. echoes
  2. compressions
  3. sonic booms
  4. pitches
Grade 4 Waves and Sound
You can make the sound louder if you pluck a guitar string by
  1. moving the string farther before letting go.
  2. stopping the string when it starts to move.
  3. shortening the string.
  4. lengthening the string.
Grade 4 Waves and Sound
The strip of material that glows in a light bulb is                .
  1. a charge
  2. an insulator
  3. a conductor
  4. a resistor
Grade 4 Waves and Sound
Which of the following best shows how sound waves travel?
  1. a branch moving back and forth
  2. a car speeding up and down hills
  3. a baseball hit by a bat
  4. a marble dropped in a bowl of water
Grade 4 Waves and Sound
What we hear as pitch is related mostly to
  1. reflection.
  2. how far away the source of the sound is.
  3. the speed of sound.
  4. how fast the source of the sound is moving back and forth.
Grade 4 Waves and Sound
In which position are you most likely to experience an echo?
  1. close to a short wall
  2. in a large, open field
  3. in a very small room
  4. facing a tall, smooth wall
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