Sound Vocabulary
Sound is produced by a back and forth motion called_________
Vibrations
Sound is a type of energy that travels in what?
Waves
The higher the pitch, the _____ the frequency.
Higher
What might an animal use that will help them find their pray in the dark?
(Ex. bats and dolphins)
Echolocation
What type of instrument creates an electric signal that is amplified to produce sound?
Electronic
The ___________________ is the number of vibrations in a certain amount of time.
Frequency
Where is the trough of a soundwave located?
the bottom
The longer the wavelength, the ______ the frequency.
Lower
What affects how fast soundwaves move?
A- Amplitude of the soundwaves vibrations?
B- What type of material (or medium) the soundwave is moving through
C- How loud you yell.
D- What motion causes the soundwave to form.
B- what type of material (medium) the soundwave is moving through.
What causes sound when a guitar string is plucked?
The vibrations of the string.
What is the name of the part of a wave, where particles (molecules) are spread far apart?
Rarefaction
What part of a wavelength is at the top?
Crest
The faster the vibrations, the ______ the pitch.
higher
A fishing boat may use this to help them locate things underwater.
Sonar
How is sound made, when a drumstick makes contact with a drum?
The top of the drum (the part you hit) vibrates.
Compression
True or False: You could hear an astronaut singing in space if you were on the moon.
False: Sounds cannot travel in space.
The slower the vibrations, the ______ the frequency.
lower
What part of a wave has increased pressure?
A- Amplitude
B-Rarefaction
C-Trough
D-Compression
D-Compression
Put the following forms of matter in order for sound traveling the SLOWEST through it to the FASTEST.
Water
Helium
Iron
Helium - Water - Iron
Increasing the _____ will increase the energy of a sound.
Amplitude
Sound would travel through which of the follow mediums the fastest?
A- An empty room
B- A swimming pool
C- Outer space
D- A classroom wall
D- A classroom wall, because a wall is a solid.
When a spoon hits a table, it makes a loud sound. When it hits a cushion, it does not make a sound, or barely makes a sound. What is the difference between the table and the cushion for the sound to come out differently?
The table vibrates more than the cushion because it is a harder surface.
Which animal has a hearing range the closest to humans?
A-Elephant
B-Mole
C-Cat
D-Dolphin
C-Cat
Soundwaves traveling through _________ is when the wave carriers energy that causes molecules to move back and forth.
air