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卷(满分100分) 一、填空题(每空2分,共42分) 1.从高处自由落下的物体,在下落过程中___。能减少,___能增加。 2.分子间引力和斥力都随距离的增大而减小,其中__力减小的更快。 3.改变物体内能的方法是___和___。 4.质量相等的水和煤油升高相同的温度,___吸收的热量较多,若吸收相同的热量,___的温度升高的较多。 5.完全燃烧500克木炭放出的热量是___焦耳。(木炭燃烧值是3.4×10~7焦/千克)
Volume (out of 100 points) I. Fill in the blanks (2 points for each space, total 42 points) 1. Objects falling freely from high places, in the process of falling ___. Can reduce, ___ can increase. 2. Both intermolecular gravity and repulsive force decrease with increasing distance, and __ force decreases faster. 3. The method of changing the internal energy of an object is ___ and ___. 4. The same quality of water and kerosene increase the same temperature, ___ absorb more heat, if you absorb the same amount of heat, ___ the temperature rise more. 5. The amount of heat emitted from the complete burning of 500 grams of charcoal is ___ Joules. (Charcoal combustion value is 3.4×10~7 Jiao/kg)