Water power
What does a dam hold back to make hydroelectricity?
Water
What do solar panels change into electricity?
Sunlight
Which fuel only makes water when it is used?
Hydrogen
“Only works in daylight.” Which source is this?
Solar
What made the solar cell’s motor go faster?
Bright light
In hydroelectricity, what does the water spin?
Turbines
What does the wind spin?
Turbine blades
Where does geothermal heat come from?
Inside the Earth
“The wind isn’t always blowing.” Which source is this?
Wind
What made the pinwheel spin faster?
The fan on high
What do we call the rising and falling of the sea each day?
Tides
Why don’t solar panels make electricity at night?
There is no sunlight (it only works in daylight)
Biofuels are made from plants or ______.
Animal waste
“Tides come every day.” Which source is this?
Tidal
What made the water wheel spin faster?
Faster flowing water
Where are tidal turbines placed?
Under the water, in the sea
Give one minus of wind power.
The wind isn’t always blowing (also accept: noise, harms birds)
Name two biofuels.
Any two of: ethanol, biodiesel, biogas, wood
“Takes lots of energy to make.” Which source is this?
Hydrogen
What happened to the motor when you covered the solar cell?
It slowed down or stopped
Why is hydroelectricity renewable?
Rain fills the dam again
Which energy source makes electricity without a turbine?
Solar
In a geothermal power station, the heat makes ______, which spins the turbines.
Steam
“Plants can be regrown, but burning makes carbon dioxide.” Which source is this?
Biofuels
Which station was most like a hydroelectric dam?
The hydro station (water wheel)