Q: Why do microwaves have a higher energy than radio waves? Choices: - higher resonance - lower frequency - higher decibel - higher frequency A:
higher frequency
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Q: Why does warm air rise higher in the troposphere? Choices: - it is more dense than cool air - It contains hydrogen - it is less flourishing than cool air - it is less dense than cool air A:
it is less dense than cool air
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Q: The presence of what, which acts as a trigger, affects the rate of chemical reaction? Choices: - friction - heat - light - catalyst A:
catalyst
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Q: The force exerted by a diving board is conservative, provided the internal friction is this? Choices: - static - intrinsic - significant - negligible A:
negligible
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