Lesson 1
What do you scan at a store to buy something?
A barcode
Sound is a ___________________
vibration
What happened to the car windshield when the music was very loud?
The windshield broke
how loud a sound is
volume
something that happens again and again and again in a way that can be predicted
pattern
a system of words, letters, or other symbols that stand for other words, letters, or symbols
code
When we make a sound, we send that sound into the ________ around us
air
Can you hear sound in outer space? Why?
NO. There is no air or anything for the sound to travel through
the height of a wave
amplitude
the invisible gas that surrounds the Earth
air
What kind of waves travel through the air?
radio waves
A quick movement back and forth
vibration
The part of your ear that vibrates when you hear a sound
eardrum
High frequency waves:
1. Move ___________
2. Look __________
1. fast
2. squished
the distance between two points of a wave
wavelength
When something is coded, it means that a pattern needs to be _______________ into another form.
Hint: think languages!
translated
a sound that bounces off a surface and travels back to someone's ears
Echo
An empty space without any air
Vacuum
Low frequency waves:
1. move ____________
2. Look _______________
move slow
look stretched
someone who comes up with something new, often an object or a way of doing something
Inventor
How does the energy change from my phone to my mom's phone when I call mama Goetz?
HINT: there are 3 steps for each phone!
My phone: Takes the sound and changes it to electricity and then to radio waves.
Mama Goetz's phone: takes the radio waves, changes it to electricity, and then changes it to sound so she can hear my voice.
Tele means:
Phonos means:
Tele: Distance
Phonos: Sound
Sound travels out in ____________ through the material around us (air, water, etc.)
Waves
different frequencies create different ____________
pitches- how high or low the sound is
a measure of how many waves go by you in a set amount of time
frequency