1.弹簧的长度跟受到的拉力成正比。········································································ (    )

    2.公共汽车紧急刹车时，乘客会往前倒，说明乘客有惯性，而汽车没有惯性。········· (    )

    3.只要不改变对物体的作用力大小，物体速度不会改变。········································ (    )

    4.一个最多能装10千克水的容器装不下10千克的冰。············································ (    )

    5.0℃的冰比0℃的水更冷些。·················································································· (    )

    6.被100℃蒸汽烫伤要被100℃开水烫伤更危险。····················································· (    )

    7.因为木块受到的浮力大于它的重力，所以木块浮在水面上。································· (    )

    8.不仅气体之间、液体之间会发生扩散现象，固体之间也会发生扩散现象。············ (    )

    9.金属导体中的电流方向就是自由电子定向移动的方向。········································ (    )

 10.纯水在温度90℃时也会沸腾。·············································································· (    )

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