八年级物理上册2.1《质量及其测量》预习检测北京课改版.doc

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质量及其测量预习检测一.选择题1.宇航员从月球上采集一块矿石,带回地球后,这块矿石一定不变的是( )A.位置B.重力C.温度D.质量 2.关于物体的质量,下面哪种说法正确( )A.同一块铁,做成铁锤质量大,做成铁管质量小B.一块铝熔化成液体后,质量变小了C.一块铜在地球上时的质量比在月球上时的质量大D.一块铜的质量不随它的形状、温度、状态、位置的改变而改变 3.下面几种说法中表示物体质量的是( )A.5 分米 3 的酒精B.5 千克的大米C.12 个鸡蛋D.50的水参考答案:一.选择题1.D2.D3.B

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