Vocabulary
Energy stored in objects when compressed or stretched
Elastic potential energy
Kinetic energy is energy due to ______________.
Motion
A spring or rubber band has ___________ potential energy.
Elastic
All forms of energy are measured in units of ____________.
Joules (J)
An object's distance and direction from a reference point
Position
All ___________ objects have kinetic energy.
You can increase the gravitational potential energy of an object by ______________ its distance from Earth.
Increasing
Energy is neither created nor destroyed. It is simply _________________ between objects.
Transferred
The transfer of energy when a force makes an object move
Work
The combined total of the kinetic and potential energy in a system is called _____.
Mechanical energy
Describe the changes in energy as a child goes down a slide.
Potential energy decreases and kinetic energy increases
A roller coaster car is mechanically forced up a hill. Then, its kinetic energy is ____________ to potential energy as it goes downhill.
transferred, converted, or changed
The push or pull on an object with mass causes it to change its velocity.
Force
A ball rolled down a steep hill. At which point on the ball's journey did it have the highest kinetic energy?
At the bottom of the hill.
Name 2 ways you can increase an object's potential energy.
-Increasing the mass
-Increasing its distance from Earth
-Changing its shape
A pendulum has what energy?
Mechanical Energy
Potential (at the top); Kinetic (when it's moving)
To make a physical or mental effort
Exert
The relationship between mass and kinetic energy is a proportional, ___________ relationship.
Linear
The amount of potential energy an object has depends on the _____________ of the object.
Position
As a ball moves downhill, its ____________ energy increases and its ____________ energy decreases.
Kinetic; Potential