Energy Transformations
Heat Transfer
Simple Machines
Types of Energy
Definitions
100
Burning a candle. (2 steps)
Chemical energy -> heat energy + light energy
100

When Mr. Berger placed his hand in the bucket of ice water how did heat move? From where to where?

From his hand to the ice water

100

A ______ is a rigid bar or board that is free to move around a fixed point called a fulcrum.

Lever

100
Energy that has the ability to fall; this type of energy increases the higher up you go.
Potential (gravitational) energy.
100
Energy is defined as _________.
The ability to do cause change or do work!
200
Using a hot plate to boil water. (2 steps)
Electrical energy -> heat energy
200

Zykeis touches a metal spoon in a hot bowl of soup.  He's confused.  It burns his hand.  How is the heat transferred?

Conduction (touch)

200

A________ is a sloping surface that reduces the amount of force required to move an object/load.

Inclined Plane

200
"You can burn it or you can eat it."
Chemical energy.
200
the direct transfer of heat between objects that are in direct contact with each other.
conduction
300
A hungry football player eating a large sandwich to use the food for energy. (2 steps)
Chemical energy -> mechanical energy
300

A pan of water is sitting outside during a hot sunny day.  The temperature of the water increases.  What type of heat transfer caused the temperature to go up?

Radiation (from the sun)

300

A ______ is a grooved wheel with a rope running along the groove.

Lever

300
This type of energy is generated by a force - a push or a pull. Object is moving due to the force.
Mechanical energy.
300
Transfer of energy by currents through a liquid or a gas.
Convection
400
Using a solar-powered calculator. (3 steps)
solar energy -> electrical energy ->light energy
400

During the day a sea breeze blows off the ocean because the sand and water heat differently.  What type of heat transfer is happening to cause this?

Convection (hot air rising cool air sinking)

400

How do you make it easier for a lever to lift an object? (Load)

Move the Load closer to the fulcrum

400
The energy of moving particles.
Heat (thermal) energy
400
Explain the law of conservation of energy!
Energy cannot be created or destroyed, it can only change forms!
500
A solar panel on the roof of a building used to heat and cool the building. (2 steps)
solar energy -> electrical energy
500

A builder was building a house.  He made sure there were no spaces in between the windows when he was putting them in.   He did this so it would be easier to heat and cool the house.  What type of heat transfer was he trying to prevent by doing this?

Convection

500

What are the 2 possible functions of a pulley system?

Reduce Force

&

Change Direction

500
The energy of moving electric charges.
Electrical energy
500
What is an energy source that is replenished continually? (not an example)
What is a renewable resource
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