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Which of these is NOT currently a source of energy? A. the Sun B. the moon C. running water?
B. the Moon
What creates geothermal energy? A. Heat deep inside the Earth B. running water C. the Sun D. wind
A. Heat deep inside the Earth
Why is solar energy considered to be a renewable source? A. The Sun's energy won't run out for billions of years. B. Solar energy is cheaper than fossil fuels. C. The Sun provides energy to plants and animals.
A. The sun's energy won't run out for billions of years.
If you visited a wind farm you would see...A. Wind blowing crop seeds into the soil B. A large grouping of wind turbines C. A geological formation where wind blows out of the ground D. A factory in which wind is created from huge fans
B. A large grouping of wind turbines
Rivers with strong flow or currents can be used to generate what kind of energy? A. hydroelectric B. solar C. geothermal ?
A. hydroelectric
Which type of energy is this statement describing? Water is released from a reservoir behind a dam. It spins a turbine in a generator.
hydroelectric energy
What are the tall towers called that spin when the wind blows?
wind turbine
True or false? Geothermal energy uses warmth from inside the earth to turn water into steam to power a generator.
True
Hydroelectric energy makes power from moving _________.
water
Which type of energy uses photovoltaic cells? A. hydropower B. solar C. geothermal
B. solar
A generator converts motion into __________. A. water B. steam C. electricity
C. electricity
What do we mean when we call some energy sources renewable?
They never run out. Nature will always replace these sources.
