Kinetic Energy
Energy due to motion
kinetic energy
stored energy due to the interactions of objects in a gravitational field
gravitational potential energy
Energy is changed from one form to another
energy transformation
How do longitudinal waves move?
side to side
a tiger running across a field
potential to kinetic
A rock is thrown off a cliff. Describe how the total energy changes from the top of the cliff to the bottom.
It stays the same. It's equal.
A spring has __ energy.
Elastic potential
a collection of objects that interact in some way
System
Which describes energy carried by a transverse wave to chemical energy?
a. bat hitting baseball
b. someone pushing a swing
c. a jogger running
d. flowers using sunshine to grow
d. flowers using sunshine to grow
transfer of energy to an object by a force that makes an object move in the direction of the force
work
_ states energy cannot be created or destroyed.
Law of conservation of energy
Does a parked car have energy? What kind?
Yes. gasoline -> chemical potential energy
Sally is riding her bike. This energy transformation is
from chemical potential to kinetic
Fred is playing a trumpet and notices the windows are vibrating. Why?
longitudinal wave is transformed to kinetic energy
source- provides energy for energy transfer
receiver- gains energy from energy transfer
What kind of energy transformation is occurring?
a battery operated toy car moving along a track
potential to kinetic
How can you increase GPE without changing the mass?
increase height
How does energy "disappear"?
Friction
Explain how sound waves transfer energy through the air
compressions and rarefactions
What kind of energy transformation is occurring?
your hands feeling warm when you rub them together
kinetic to kinetic
What kind of energy transformation is occurring?
The loud sounds of exploding fireworks at a display
kinetic to kinetic
What is the difference between an open and closed system?
open- energy and matter can interact with surroundings
closed- cannot
How can an energy transfer occur without an energy transformation?
same type of energy can move from one object to another
ex. bumper cars
transverse- up and down (rope)
longitudinal- side to side (slinky)
Describe how energy changes when a ball drops and hits the floor and bounces back
the ball gains gravitational potential energy from the ground that allows it to rise