Sound
2.What is volume?
how loud or soft a sound is
loud sound
soft sound
a lot of energy
can travel far
can hear from far away
ex) jackhammer, siren, car horn
less energy
cannot travel far
stand close to hear
ex) whisper, squeaking mouse, ticking watch
- What is pitch?
how high or low a sound is
high note
low note
vibrates quickly
vibrates slowly
- How does sound move?
can travel through
1) air
2) solids
3) liquid (water)
bounces off things: echo
a sound that is a copy of another sound
ex) bats (echolocation)
some can be absorbed
use objects to block the sound
ex) closing the door
ex)wearing earplugs
whales communicate underwater