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15
×
Why is a bow and arrow an example of mechanical energy?
Because it stores potential energy and releases it as kinetic energy
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15
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What is biomass energy made from?
Trees, plants, and rubbish.
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15
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How is sound energy created?
By the reflection of light
By the vibration of objects and air particles
By the movement of electrons
By the transformation of heat energy
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15
×
When you jump off a diving board, what energy transformation happens?
Potential energy is transformed into kinetic energy.
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15
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What is the primary source of light energy on Earth?
fire
the sun
the earth
the moon
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15
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There are some energy sources that will never run out
False
True
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15
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Does hydropower cause pollution?
No, but it can affect the habitats of aquatic species.
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15
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Energy makes changes and movement possible.
False
True
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baam
Lose 5 points!
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rocket
Go to first place!
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rocket
Go to first place!
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baam
Lose 25 points!
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15
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What type of energy is produced by movement?
Kinetic energy
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15
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How is thermal energy, or heat, generated?
Through the absorption of sound waves
By the presence of light energy
By the release of chemical energy
By the movement of tiny particles within an object
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eraser
Reset score!
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rocket
Go to first place!
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fairy
Take points!
5
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25
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thief
Give points!
5
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25
15
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What covered the Earth millions of years ago?
Swamps with giant ferns and trees.
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boom
Lose 50 points!
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gift
Win 15 points!
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rocket
Go to first place!
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banana
Go to last place!
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15
×
When energy transformations are useful, we say the energy is lost or wasted.
False
True
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15
×
What device is used to transform solar energy into electrical energy?
Solar panels.
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