Sound
What makes a sound?
Vibrations
Low sound waves mean what kind of amplitude?
Low or soft amplitude/sound
What kind surface does the sound need to hit to bounce back and make an echo?
Hard
Name something that sound can bounce off to cause an echo.
Something hard
Sound travels in these, like the ocean.
What are waves?
What is pitch?
how high or low a sound is
For an echo, does the hard surface need to be close or far away?
Far away
Name something that has a big amplitude (loud)
.
What are vibrations?
Movement
A gong has a high or low pitch?
Low
Name an animal that uses echos.
Bats, whales, dolphins, elephants
Name something that has a small amplitude (quiet)
Something quiet
What do you call how loud or soft a sound is?
Amplitude
An ambulance siren is an example of what kind of pitch: high or low?
High
True or false: Vibrations are movements
True
Name somewhere you could hear an echo.
Hard and far away
If the amplitude is loud, the sound waves are high or low?
High
What is an echo?
Sound that bounces back to you
True or false: High pitched sounds have waves that are close together.
True
Name something with a high pitch
.