Energy Study Guide

Front

Factors affecting gravitational potential energy?

Back

Mass and height

Front

If you were a caveman and were using two sticks to start a fire, how could you make it more likely to ignite?

Back

Use dry wood and create more friction

Front

The law of conservation of energy states that:

Back

Energy can be transformed from one form to another, but cannot be created or destroyed.

Front

A gasoline powered car is 20% efficient. What does this mean?

Back

It converts 20% of the gasoline's energy into mechanical energy.

Front

Example of electrical energy being converted into sound energy:

Back

A speaker playing music

Front

When you leave the refrigerator door open, energy is transferred in the form of:

Back

heat entering the refrigerator from the room

Front

Example of kinetic energy transforming to thermal energy:

Back

A car engine heating up while running

Front

What determines how much thermal energy can be stored in an object?

Back

Its mass

the energy supplied

the type of substance

(All of the above)

Front

What materials conduct thermal energy? Options: Metals, Plastics, Wood, Glass

Back

Metals

Front

Example of chemical energy being transformed into thermal energy:

• A car engine burning gasoline
• A solar panel converting sunlight
• A wind turbine generating electricity
• A battery powering a flashlight

Back

A car engine burning gasoline