Sharpening an object causes that object to change shape, and and the shape and look of the family has changed, as well. Given these facts, sharpening an object changes its what among the following options: - chemical makeup - cracks - Sight - smell - energy - color - look - cut
look
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Aradio converts electrical energy into vibrations, and electric energy is stored in batteries. Given these facts, what does a radio use to make vibrations among the following options: - waves - rays or beams - a battery - an object - barrel-shaped - nerves - Loud noises - it needs them
a battery
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Alight bulb requires electrical energy to produce light, and coal today is mostly used for power plants creating electricity. Given these facts, what can power a light bulb among the following options: - copper - coal - Cars - Gas - motors - heat - energy - metal
coal
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Sweating reduces body heat, and humans, of course, can sweat and perspiration tastes salty. Given these facts, what does perspiration do among the following options: - decreases - increase body heat - Evaporation - reduce body heat - rain - It gets heated up - change weather - It expands
reduce body heat
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