1) Light energy is produced by... (光能是由……产生的) a) the Sun (太阳) b) the moon (月亮) 2) Potential energy (势能) a) is moving energy (能量在流动) b) is energy stored that can be turned into kinetic energy (是储存起来可以转化为动能的能量。) c) is weaker than kinetic energy (比动能弱) d) is in a vacuum (处于真空中) 3) Coal contains a lot of... (煤炭含有大量的……) a) sound energy (声能) b) thermal energy (热能) c) nuclear energy (核能) d) chemical energy (化学能) 4) Coal can be burnt as ... to power machines (煤炭可以燃烧,为机器提供动力。) a) battery (电池) b) electricity (电) c) fuel (燃料) d) water (水) 5) Light is made of... (光是由……构成的。) a) particles (颗粒) b) waves (波浪) 6) Light energy is also called (光能也称为) a) Solar energy (太阳能) b) Enthalpy (焓) c) Sound energy (声能) d) Nucleus (核) 7) A computer needs ... to work (电脑需要……才能工作) a) Water (水) b) Food (食物) c) Electricity (电) d) Coal (煤炭) 8) X-rays are a form of... (X射线是一种……) a) Light energy (光能) b) Sound energy (声能) c) Heat energy (热能) d) Electrical energy (电能) 9) Things that are hotter, have ... heat energy (温度较高的物体具有……热能) a) more (更多的) b) less (较少的) 10) Light energy in our eyes is turned into ... which goes to our brain (我们眼睛中的光能会转化为……,然后传递到我们的大脑。) a) sound (声音) b) chemical (化学) c) electrical (电气) d) doesn't change (不会改变) 11) Which of these are renewable? (哪些是可再生能源?) a) Coal (煤炭) b) petrol (汽油) c) wind (风) d) Nuclear (核) 12) Waste energy is... (废弃能源是指……) a) Forms of energy we do not want to make (我们不想制造的能源形式) b) A special kind of energy (一种特殊的能量) c) Made by rubbish (用垃圾制成的)

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