Kinetic vs. Potential Energy
Is the statement below an example of kinetic or potential energy?
Going down a slide
Kinetic
(NOT kinetic or potential)
A glass falling from the counter
Gravitational Energy
Work is the transfer of energy that occurs when a force makes an object _____________.
Move
What is the name of a sloping surface, such as a ramp, that reduces the amount of force required to do work?
Inclined Plane
True or False:
Machines make work easier by increasing the force that can be applied to an object
True
Is the statement below an example of kinetic or potential energy?
Waiting at the top of a slide
Potential
What type of energy is shown below? (NOT kinetic or potential)
A stretched rubber band
Elastic Energy
Power is the ____ at which work is done.
Rate
Which simple machine uses a grooved wheel with a rope, chain, or cable to lift something up?
Pulley
An input force is the force applied ___ the machine
to
Is the statement below an example of kinetic or potential energy?
A stretched rubber band
Potential Energy
What type of energy is shown below? (NOT kinetic or potential)
Drinking a glass of milk
Chemical Energy
The Law of Conservation of Energy states that energy may change form, but it cannot be created or _____________ under ordinary circumstances.
destroyed
Fulcrum
An output force is the force applied ___ the machine.
by
Is the statement below an example of kinetic or potential energy?
Riding a bike down a hill
Kinetic Energy
What type of energy is shown below? (NOT kinetic or potential)
Turning on a flashlight powered by a battery
Electrical or light energy
A machine is a device that makes doing work __________.
Easier
A see saw is an example of what type of simple machine?
Lever
What is the input and output force measured in?
Newtons
At which step does potential energy turn into kinetic energy in the situation below?
1. A boy is holding a ball above the ground
2. He releases the ball and watches it fall to the ground
3. The ball bounces a few times
4. The ball comes to a stop
Step 2
What type of energy is shown below? (NOT kinetic or potential)
Sitting by a bonfire
Heat(thermal) or light energy
A simple machine is a machine that does work with only ____ movement of the machine.
one
What is a compound machine?
Two or more simple machines working together
Machines can be made more efficient by reducing _________.
Friction