Ques:Q: What law explains how the change in direction of the light ray depends on how the speed of light changes, which in turn is related to the indices of refraction of the media involved? Choices: - Boyle's law - Born's law - Newton's first law - law of refraction A:

Ans:law of refraction
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Ques:Q: Plastics are common examples of synthetic polymers of what abundant element? Choices: - silver - silicon - hydrogen - carbon A:

Ans:carbon
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Ques:Q: What are considered solid lipids that animals use to store energy? Choices: - acids - sugars - proteins - fats A:

Ans:fats
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Ques:Q: Where are aerofoils found? Choices: - airplanes and plants - birds and busses - birds and cars - birds and airplanes A:

Ans:
birds and airplanes
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