Matter
What's a reactant?
The thing that gets reacted with another chemical or itself
What's conduction?
Transfer of heat through direct contact
What is electrical energy?
Energy created by electricity
Where does our natural light come from?
The sun
What does gravity do?
Weigh things down and keeps them from drifting off aimlessly
What's a product?
The thing that's made from the reactants
What's convection?
Warmer fluids rise, colder sink
What is mechanical energy?
Energy of motion
How long does it take to renew fossil fuels?
Millions of years
What's friction?
Two things rubbing against each other
What's an element?
A pure substance
What's radiation?
Heat transfer through air
What is chemical energy?
Energy caused by chemical reactions
Where does some of the most energy come from?
The sun
What's balance?
Two things being even
What's a freezing point?
The temperature where something freezes
What are the kinds of light?
Artificial and natural
What is sound energy?
Energy caused by sound waves
How long does it take to renew renewable resources?
Within a human lifetime
What's unbalance?
Two things being uneven
What's a mixture
Multiple elements
Is renewable or nonrenewable energy more wasteful?
Nonrenewable
What is nuclear energy?
Energy caused by nuclear things
What's the most harmful nonrenewable resource?
Coal
What's potential energy?
Stored energy