
第七章 认识物质
Authored by Teoh Pauline
Science
1st - 3rd Grade
Used 78+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在固体、液体和气体中,哪一个的热膨胀最小?
气体
液体
固体
都一样
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一项叙述是错误的?
用铜和铁制成的双金属片经过加热后会向铜片那一边弯
把非常热的水倒进一个厚玻璃杯,它会破裂
水冻结成冰时会膨胀
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
将一铁环加热时,下列哪一项不会改变?
内直径
外直径
体积
质量
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
固体热胀冷缩的应用包括下列哪些?
I。工厂里制成 U 形的蒸汽管
II。双金属片
III。火车轮的轮箍
IV。用铆钉连接钢板
I,II
I,III
II,III,IV
I,III,IV
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
两根铁轨的接头处有空隙是( )。
为了防止铁轨间的磁力作用
为了让铁轨膨胀有伸长的余地
由于铁轨的弯曲而产生
由于铁轨的收缩而产生
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
冬天,把沸水倒入厚玻璃杯中,杯子常会破裂,这主要是因为 [ ]
玻璃器皿本身易碎
水的热膨胀大于杯子的热膨胀
玻璃是热的不良导体,厚玻璃杯冲进沸水,受热膨胀不均匀,内壁膨胀大于外壁,易破裂
玻璃杯外壁的热膨胀大于内壁的热膨胀
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物质具有热胀冷缩的现象其主要原因是( )
微粒间的空隙发生了改变
微粒大小发生了变化
微粒的质量发生了变化
处于静止还是运动的状态
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