Work and Power
Kinetic/Potential Energy
Forms of Energy
Changes in Energy
100
The ability to do work.
What is energy?
100
The energy any object has because of its motion.
What is kinetic energy?
100
Energy carried by electricity.
What is electrical energy?
100

List the energy transfers for photosynthesis.

Electromagnetic ‐> chemical

200
A force (a push or pull) applied to an object which forces the object to move.
What is work?
200
Stored energy or energy that an object has due to its position.
What is potential energy?
200
Energy an object has due to its motion, position or condition.
What is mechanical energy?
200

List the energy transfer of a solar powered calculator.

Electromagnetic -> electrical
300

What two things must happen for work to occur?

Force and motion must be applied in the same direction.

300

A dog weighs 150 Newtons. It jumps 3 to catch a Frisbee. What is its gravitational potential energy?

450 J

300
Energy formed when an atom splits apart or when two atoms join to form one.
What is nuclear energy?
300

A ball is rolling down a hill its kinetic energy increases is 15J and its potential energy is 12J. What is the ball’s mechanical energy?

27 J

400

How much work is done by a crane that lowers 1,000 Newtons of material a distance of 150 meters?

150,000 J

400

Find the kinetic energy of a horse that runs with a speed of 48 km/h and has a mass of 500 kg?

576,000

400
Energy stored in the way atoms are connected to each other.
What is chemical energy?
400

How is energy transferred?

When energy moves from one object to another

500

A box is pushed across the floor for a distance of 5 meters with a force of 50 Newtons in 5 seconds. What is the power?

50 J/S

500

A mongoose is a fast mammal that can run with a speed of 32 km/h and have an average mass of 3.5 kg.  How much kinetic energy would a mongoose have?

1,792 J

500
Energy of the movement of atoms and molecules.
What is thermal energy?
500

What is the law of conservation of energy?

Energy can neither be created or destroyed, it can only be transformed from one form to another.

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