Lesson 1
What is energy?
The ability to do work or to cause change
Define Vibration
back and forth motion
Give an example of a transparent object
something see through
Light and sound travel in ________
waves
Two strings are plucked on a guitar. The first string vibrates more quickly than the second string. What is true about the strings sound?
First one is higher
Define potential energy
Stored energy. Energy that isn't causing change but could cause change in the future.
A high frequency sound means the sound has a high what?
pitch
Give an example of something translucent
Something kind of see through
Energy cannot be made or destroyed but it can ___________
change forms
What is necessary for sound to exists?
vibrating particles
Define kinetic Energy
Energy in motion. Energy due to motion.
Low frequency sound has a low what?
pitch
Give an example of something opaque
Some thing that lets no light pass through it or that you cannot see through
What is an example of gravitational potential energy?
Something high in the air. Branch, hill, top of building, top of ramp, etc.
When you turn on a radio, what is the energy transfer that takes place?
A bolder sitting still on top of a hill has what kind of energy?
Potential
Sound is just what?
vibrations
A light bouncing of a mirror is an example of what?
reflection
Example of elastic potential
rubber band, pole vault pole, rubber rope, wind up toy,
How are sound and light energy similar?
They travel in waves
A car driving down a street has what kind of energy?
Kinetic
A thick long string would have a what kind of pitch?
low
Light bending through water which looks like it breaks your straw is an example of what?
refraction
A student rolls a bowling ball, a marble, and a basketball on the floor at the same speed. Which one has the most kinetic energy?
bowling ball
As potential energy decreases, what increases?
kinetic