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FORM 2 SCIENCE REVISION
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The S.I unit for energy is...…(能量的国际标准单位)
Joule
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Energy cannot be ........... and ............. (能量不能被?)
created and destroyed 被创造和被毁掉
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Food contains of ............ energy. (食物含有什么能量)
chemical
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Different charges .......... each other. (不用的电荷会怎样?)
attract 相吸
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Same charges .......... each other. (一样的电荷会彼此怎样?)
repel 相斥
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What type of energy is stored in an object that is compressed, stretched or bent ? (被压缩、拉伸或弯曲的物体中储存了哪种类型的能量?)
elastic potential energy
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Water, solar and wind are ........... energy. (水,太阳能和风都是)
renewable energy 可更新的能源
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...... used to detect the static electrical charges. (用什么来检测静电荷?)
electroscope
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What is the name of positive charge? 正电荷的名称是什么?
proton
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What is the name of negative charge? 负电荷的名称是什么?
electron
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When two different types of objects are rubbed together, .........are transferred from one object to the other. (两个物体摩擦,什么会转移)
electrons
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