Vocabulary
Give the everyday word for "energy"
force, power
What is a vibration?
A series of particle collisions, particles hitting each other
What happens to the sound when the amplitude is higher?
the sound/the volume is louder
What is the name of the way dolphins, whales and bats communicate?
Echolocation
Sound travels faster underwater.
True
Give the every day word for "source"
start, beginning
What is the source of sound in another dolphin communicating with her calf?
the mother dolphin
What happens to the sound when the amplitude is lower?
the sound/volume is softer
How do kangaroo rats communicate?
By drumming/stomping their foot
Soft materials like fabric and foam absorb sound waves, making the sound louder
Give the every day word for "vibrate"
buzz, shake, move
How are sound particles in the air positioned?
They are spread apart
The ___________________ is how loud or soft a sound is.
Volume
The oil sac in their heads
The machine Ms.Dessi used to record the waves of her ukulele was called a xylophone.
False. Oscillator
Give the definition of wavelength
The distance between wave peaks
How are sound particles in water positioned?
They are close together
In warmer temperatures a sound wave will travel _________ (faster/slower).
faster!
What do humans use to produce sound?
Voicebox
False.
How high or low a wave is
Why is sound muffled when covered by something?
the covering material absorbs the sound waves, and their energy is reduced
Which machines that we talked about can doctors use to heal patients?
X-ray, MRI, EKG, etc
What is so interesting about mountain blue birds and the way they communicate?
They have two vocal chords
Particle collision is what happens when particles melt into the air.
False. They collide/hit each other.