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20 questions
Sound is produced by something...
echolocation
vibrates
vocal chords
The human perception of how much energy a sound wave carries
frequency
loudness
distance
Some animals use this to navigate and hunt
frequency
ecolocation
vibration
Sound needs a ____ to travel through
frequency
medium
echolocation
small
The ___ energy a sound wave has the ____ the sound
more, softer
less, louder
less, softer
A vibrating object causes this to move back and forth
air molecules
gases
solids
How does an echo occur?
sound travels faster than light
sound bounces off solids
sound is absorbed by solids
A sound wave produced by a lower-pitched instrument has a low ___
distance
echolocation
loudness
frequency
The diagram shows a cartoon of a sound wave produced while a student is speaking.
What happens to the sound wave when the student speaks louder?
The amplitude increases
the wavelength will double
the speed will increase
the amplitude will decrease
The diagram shows a research vessel using sonar to map the ocean floor.
Upon which basic behavior of sound waves does this technology depend?
absorption
compression
reflection
refraction
Echolocation allows an animal to ...
Climb trees faster
Fly upside down
See an "image" of a nearby object
Find a friend
Dolphins use echolocation to replace what sense?
Sight
Hearing
Taste
Smell
In echolocation, the animal uses echoes of sounds it produces to collect information about its surroundings.
True
False
Most humans can hear ultrasound.
True
False
Which of these animals use(s) echolocation? Choose all that apply.
bats
dolphins
elephants
cats
owls
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