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sceince leap review
Freemans sceince class leap review
Question | Answer |
---|---|
sound waves | *a compressional wave produce by vibrations in matter *sound travels at different speeds in different materials *move slowest in gases and fastest in soilds |
Pitch | pitch describes a sound. pitch depends on the sound waves frequency or how many waves pass a point 1 second . highness and lowness describe pitch. high number of waves = high pitch ,low number of waves = low pitch. |
Doppler effect | an increased ( or decrease ) in frequency of sound waves the source and observer move toward ( or away from ) each other. the effect causes the sudden change in pitch noticeable in passing siren or plane |
wave | a disturbance that transfers energy from one point to another |
transverse |