| A | B |
|---|
| to move quickly back and forth | vibrate |
| the loudness or softness of a sound | volume |
| the highness or lowness of a sound | pitch |
| an instrument used to hear the sounds of body organs | stethoscope |
| an instrument used to amplify voices, music, and other sounds | microphone |
| a form of energy | electric signal |
| to make stronger | amplify |
| an instrument with a built-in microphone that makes sound louder | bullhorn |
| an instrument used to help people with hearing problem hear better | hearing aid |
| unit used to measure loudness of sounds | decibel |
| How are sounds made? | Sounds are made when matter vibrates. |
| How is sound similar to light? | Sound is similar to light because they are both kinds of energy and both travel in waves. |
| How is sound different from light? | Sound is different from light because you can see light energy, but you cannot see sound energy. |
| How does sound travel? | Sound travels in waves. |
| distance from a point on one part of the sound wave to the same part on the next sound wave | wavelength |
| When does a high-pitched sound occur? | when matter vibrates quickly |
| When does a low-pitched sound occur? | when matter vibrates slowly |
| What are the 3 tiny bones in the ear called? | hammer, anvil, and stirrup |
| part of the ear shaped like a snail's shell that is filled with liquid | cochlea |
| thin skin inside the ear, which vibrates when sound waves hit it | eardrum |
| part of the ear that carries messages to the brain | nerve |
| Why does sound travel faster through wood than through water or air? | The sound particles in wood are closer together than in air or water; therefore the sound waves are moving quicker. |
