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Science crossword puzzle

Teacher: Mauro Martinez
Across
A photo voltaic cell
Can't be replaced.
The ability to do work.
A photovoltaic cell that converts sunlight directly into electricity.
Air in motion
Heat from inside the earth.
Made from plants that are made by sugar.
A flammable yellow black liquid.
A natural nonrenewable fuel such as coal, oil, and natural gas.
Another name for oil
Down
Energy from the sun.
The spitting of uranium atoms to release energy.
Any state, circumstance, opportunity, or means specially favorable to success, interest, or any desired end.
A turbine having a large vanned wheel rotated by the wind to generate electricity.
A hard solid fuel formed of the remains of plants over millions of years ago.
A gas usually found in the ground above petroleum deposits.
Absence or deprivation of advantage or equality.
Electricity produce by flowing water.
Can be replaced.
Made from plants and animals.