Sound Basics
What is the quick back-and-forth movement that makes sound?
Vibration
A long wavelength makes what kind of sound?
A low sound
Why can sound travel through air or water but not in outer space?
Because sound needs air to vibrate, and there is no air in space.
In a paper cup telephone, what vibrates first?
The cup you talk into.
What is something that happens over and over in a way you can guess?
Pattern
How do we describe how loud or quiet a sound is?
Volume
A short wavelength makes what kind of sound?
A High Sound
What has to happen to make a sound?
Something has to have a vibration
How does the sound get to the other cup?
The string vibrates and makes the other cup vibrate.
You make a pattern with shapes: circle, square, triangle, circle, square, triangle… what comes next?
Circle
What is the way sound moves in an up-and-down pattern?
Sound wave
If you use a string to show a high-pitched flute sound, what does the string look like?
The string has short, close-together waves.
What happens when a drum is played under water or in space?
The drum works under water, but not in space.
Why might someone hear sounds but not words if the string is too long?
The vibrations get weaker, so the words are hard to hear.
A secret trail of footprints goes: big, small, small, big, small, small, big… What are the next three footprints?
Small, small, big
How do we describe how high or low a sound is?
Pitch
If you use a string to show a low-pitched tuba sound, what does the string look like?
The string has long, spread-out waves.
How does sound travel from a source to your ears?
Vibrations move through air, water, or a string until they reach your ears.
Give one way to use a pattern of sounds to send messages with a paper cup telephone.
Answers will vary.
A spy uses three instruments to send a pattern: drum, bell, whistle, drum, drum, bell, whistle, drum, drum, bell, whistle… What comes next five instruments?
Drum, drum, bell, whistle, drum
A system of words, letters, or symbols that stand for other words, letters, or symbols is called what?
Code
What is the rule that connects wavelength and pitch?
Long waves = low sound, short waves = high sound.
What happens to a window when a loud speaker plays music nearby?
The air vibrates, which makes the window vibrate too
Give one way to use a visual pattern to send messages with a paper cup telephone.
Answers will vary.
A spy writes this pattern: 10, 9, 7, 4, 0… What are the next two numbers?
-5, -11