The sun heats water at the Earth's surface. The water turns into water vapor. The water vapor condenses into clouds and falls as precipitation.
Oops!
Check
Okay!
Check
heart
Other team wins 25 points!
Oops!
star
Double points!
Okay!
fairy
Take points!
5
10
15
20
25
banana
Go to last place!
Oops!
trap
No points!
Oops!
rocket
Go to first place!
Okay!
fairy
Take points!
5
10
15
20
25
banana
Go to last place!
Oops!
20
What is active solar heating?
Light strikes a dark metal surface of solar collector & is changed to thermal energy; water is pumped through pipes in solar collector & then through building
Oops!
Check
Okay!
Check
15
What is an advantage of nuclear power?
It does not produce air pollution because no fuels are burned.
Oops!
Check
Okay!
Check
15
What are biomass fuels?
Fuels made from living or recently living things including wood, leaves, food wastes, and manure
Oops!
Check
Okay!
Check
5
What was probably the first fuel ever used for heat and light?
Wood
Oops!
Check
Okay!
Check
15
What is an advantage of solar energy?
It is available anywhere the sun is shining; it does not cause pollution; it will not run out for billions of years
Oops!
Check
Okay!
Check
20
What is a disadvantage of hydroelectric power?
Dams prevent some species of fish from breeding and can damage aquatic habitats.
Oops!
Check
Okay!
Check
20
What is electricity produced by flowing water?
Hydroelectric power
Oops!
Check
Okay!
Check
5
What is a mixture of gasoline and alcohol?
Gasohol
Oops!
Check
Okay!
Check
thief
Give points!
5
10
15
20
25
gift
Win 15 points!
Okay!
fairy
Take points!
5
10
15
20
25
banana
Go to last place!
Oops!
15
How can you generate electricity from geothermal energy?
Water is pumped underground where magma heats it and changes water to steam which turns turbines connected to generators
Oops!
Check
Okay!
Check
20
How does a solar power plant work?
Rows of mirrors focus the sun's rays to heat a tank of water which creates steam which can be used to generate electricity
Oops!
Check
Okay!
Check
15
How do solar cells work?
When light hits the cell, an electric current is produced.