What is a wave?
Give one example of a wave you can see or hear.
An instrument like a tuba only makes ____ pitched sounds. (high or low?)
Low
The substance that a wave travels through is called a ___________.
Medium
A sound wave can cause movement by creating _____________.
Vibrations
To send information secretly, you can write it using a ________.
Code
A wave transfers ___________.
Energy
If you increased the amplitude of a sound wave, what would happen to the sound you hear?
The sound would get louder.
The width of the wave from one crest to another is called the ________.
What would you hear if you screamed in outer space?
Nothing!
A bar code, like you would see in a grocery store, is a code made up of these 2 symbols.
A black line and a white line
Draw an example of a wave.
Draw it!
If you increased the wavelength of a sound wave (made the wave more spread out), what would happen to the sound you hear?
It would get lower.
The height of a wave is called the _____________.
Amplitude
What medium does the sound wave travel through if you yell to your friend across the room?
Air
To ________ is to take a message in code and change it into a message you can understand.
decode