Light wands are small tubes that can be used to give off light without electricity or fire.
A light wand keeps two fluids separate from each other until the wand is bent. Once the wand is bent, the tube holding the inner fluid breaks, and the two fluids mix together inside the wand.
Where does the light energy of a glowing light wand come from?
A. the mechanical energy of the broken tube
B. the heat energy of the fluids inside the wand
C. the chemical energy of the fluids inside the wand
D. light energy from the Sun striking the wand
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