题目
题目
单项选择题

What happens when energy is changed from one form to another?

选项
A.Some of the energy is lost entirely.
B.All of the energy can be accounted for.
C.A physical change to a substance occurs.
D.All of the energy is changed to a useful form.
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标准答案
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思路分析
When energy changes from one form to another, we rely on the principle of energy conservation to guide our reasoning. Option 1: 'Some of the energy is lost entirely.' In real processes, energy is conserved, but it can be transformed into forms like heat o......Login to view full explanation

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