If sharpening an object changes its look, then sharpening an object changes its what? Answer choices: - chemical makeup - cracks - Sight - smell - energy - color - look - cut
look
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If aradio uses a battery to make vibrations, then what does a radio use to make vibrations? Answer choices: - waves - rays or beams - a battery - an object - barrel-shaped - nerves - Loud noises - it needs them
a battery
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If coal can power a light bulb, then what can power a light bulb? Answer choices: - copper - coal - Cars - Gas - motors - heat - energy - metal
coal
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If perspiration reduces body heat, then what does perspiration do? Answer choices: - decreases - increase body heat - Evaporation - reduce body heat - rain - It gets heated up - change weather - It expands
reduce body heat
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