Sound
In what direction does sound energy move away from the source?
All directions, like a ripple.
The height of a wave from its equilibrium (normal) position up to the top of a crest or down to the bottom of a trough is called the...
Amplitude
Digital devices use this coding language to send and receive information.
Binary
When energy moves from one object to another, we say what has happened?
Energy transfer
Why should engineers always test their designs before actually using them?
To make sure their designs meet the criteria and fix any failures.
A sound wave begins with a large amplitude and ends with a small amplitude. How would the sound change?
The sound would get quieter.
The distance from a point in one wave to the same point in the next wave (like from one crest to the next) is called the...
Wavelength
Why are patterns important for digital communication?
They create codes that digital devices can understand.
The particles change the direction they're moving in.
Dolphins are able to recognize each other through signature whistles. These whistles can best be described as...
Unique patterns of pitch changes
A sound wave begins with a long wavelength and ends with a short wavelength. How would the sound change?
The pitch would get higher.
The number of waves moving past a point in a given time period is called the...
Frequency
What are two examples of patterns humans use to communicate?
If two people are talking to each other in the room, what kind of energy is transferred from one person to the other?
Sound energy
(Answers will vary)
Sound can be visualized as a transverse wave, but sound energy moves more so as a...
Where can the trough of a transverse wave be found?
The bottom point of the wave
How is language an example of a code?
It is a pattern of sounds and symbols used to send and receive information.
Sound energy is transferred through...
Particle collisions
Tsunami waves are most often caused by...
Seismic activity underwater, such as undersea earthquakes.
If you can't hear someone, you may talk louder. This means you're using more sound energy to communicate. How would the shape of the sound wave you make change if you talk louder?
The amplitude would increase.
How is a longitudinal wave different from a transverse wave?
Transverse waves have crests and troughs, while longitudinal waves have compressions and rarefractions/expansions.
How has binary code improved human communication patterns?
Humans can now communicate information quickly and accurately over very long distances using binary code.
Why can thermal energy and light energy travel through space, but sound energy cannot?
How does an ultrasound machine work?
It sends sound waves with different frequencies (wavelengths) through the body to make a picture of what's going on inside.