what is the to and fro movement of particles called?
vibrations
true or false, crest is the highest point in a wave
true
the reflection of sound causes ....?
echoes
songs with the word 'song' in its title
many answers
true or false, sound travels faster in air than in liquids
unscramble this characteristic:
WVLEEHTAGN
wavelength
true or false, clothes are good reflectors of sound
false
what kind of instrument does Taylor Swift usually play?
(wind, percussion...)
guitar - stringed instrument
can sound travel on the moon?
no (vacuum)
define amplitude
maximum displacement of a wave
what is the vibrating part of a percussion instrument?
the membrane
do you remember which instrument I play?
guitar
how does sound travel?
longitudinal waves
a sound wave with high frequency will have high .....?
pitch
in 30 seconds, describe how SONAR works.
a device that sends a signal underwater which is reflected from the floor, the time is recorded and the distance is accordingly calculated
in the beginning of the class, I had asked how many of you play instruments, can you recall how many people did play?