List of Words for Letter 'R'
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radio waves
an invisible form of light energy
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record data
to accurately arrange and store information collected in science investigations
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recycle
to turn an old thing into something new
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reduce
to use less of something
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reflection
light bouncing off an object
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renewable energy
energy that can be replaced once it is used
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reuse
to use something again
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revolve
to move around another object in a circular way
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rotate
to turn