Solar energy makes plants...
grow
Solar power is ... energy.
light
Solar cells turn sunlight into...
electricity.
Wind is moving...
air.
... causes the the tides and water to move in waves
Gravity
When water turns into vapor, this is called...
evaporation.
When gas turns into a liquid, this is called...
condensation.
Geothermal energy is ... inside the Earth's crust.
heat
The Earth has three layers, the ..., the mantle and the crust.
core
Biomass is wood, plants and ...
garbage (poop too)
The energy in biomass comes from the ...
sun.
We can build a ... across a river to control the flow of water.
dam
In a hydropower plant water spins a ... to make electricity.
turbine
Solar energy travels to the Earth in ...
rays.
