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WYLIE Science UB_4

4th grade WYLIE Science Unit B_ch 4

TermDefinition
visible spectrum lights energy that can be seen and can be broken into the colors of the rainbow
wavelength the distance from a point on a wave to the same point on the next wave
transparent allows light to pass through so that whatever is behind can be seen
translucent allows light to pass through but scatters it so that whatever is behind it cannot be clearly seen
opaque does not allow light to pass through
transmit to allow to pass through
absorb to take in
reflect to bounce back
convex lens a lens that is thicker in the middle than at the edges
concave lens a lens that is thinner in the middle than at the edges
vibrate to move quickly back and forth
volume the loudness or softness of a sound
pitch the highness or lowness of a sound
stethoscope an instrument used to hear the sounds of body organs
microphone an instrument used to amplify voices, music, and other sounds
electric signal a form of energy
amplify to make stronger
bullhorn an instrument with a built-in microphone that makes sound louder
hearing aid an instrument used to help people with a hearing problem hear better
Created by: Wylie
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