What is energy?
The ability to cause change in matter.
Energy
This is the total kinetic and potential energy an object has.
Mechanical energy
Energy can change from one form to another. True or False.
True.
False. Heat transfers from a warmer object to a cooler object.
Heat moves through some materials very easily. What material is the best conductor?
metal
Name 2 types of energy.
Kinetic energy is the energy of motion. Give an example of kinetic energy.
Answers vary
True or False. Electrical energy changes to light energy when you turn on a light switch.
True.
This is the transfer of heat energy between objects that are touching.
Conduction
What type of matter makes the best conductors? Liquids, solids, or gases.
Solids
You get your energy from this.
Potential energy is energy something has because of its position or condition. Give an example of this.
Answers vary.
Sound energy is caused by what?
Vibrations
This is the transfer of heat within a liquid or a gas.
Convection
Why is something like iron referred to as a good conductor?
Heat can travel through it very easily.
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What kind of energy does something have when it is at rest and not moving?
Potential energy
The energy that moves between objects of different temperatures.
Heat
This is the transfer of heat without matter to carry it.
What types of matter make good insulators? Solids, liquids, or gases.
Liquids and gases
How can you show that the energy in trail mix comes from the sun?
The nuts and berries in trail mix comes from plants that get their energy from the sun.
As a roller coaster car goes down a hill, how does its mechanical energy change?
Its potential energy decreases, and its kinetic energy increases.
What are the 3 types of heat transfer?
Conduction, convection, and radiation
Give an example of all 3 types of heat transfer.
Answers vary.
Which forms of heat transfer do insulated bottles prevent?
Convection, conduction, and radiation.