第二章:水的密度和压强
Quiz
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Science
•
8th Grade
•
Practice Problem
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Medium
Chin Tay
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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
1. 下列关于密度的说法,正确的是( )。
不同的两个物体,质量大的,它的密度也一定大
不同的两个物体,体积大的,它的密度也一定大
一个物体的密度与它的质量成正比,与它的体积成反比
物质的密度并不随其体积或质量的改变而改变
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2. 1 kg实心铁球的密度与2 kg实心木球的密度相比,( )。
铁球的密度大于木球的密度
铁球的密度小于木球的密度
铁球的密度等于木球的密度
条件不足,无法比较
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
3. 将不同的液体分别装入两个相同质量的瓶内,并将其放置在托盘天平两端,如图2-1所示,则( )。
甲瓶液体质量较大
乙瓶液体质量较大
乙瓶液体密度较大
两瓶液体密度相等
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4. 鉴别一个物体是否为实心体的方法是测量该物体的( )。
体积
质量
密度
熔点
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5. 一瓶纯水倒出一杯后,剩下的纯水的密度,下列判断正确的是( )。
密度变大
密度变小
密度不变
条件不足,无法确定
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
7. 培松同学在用天平和量筒测量形状不规则小石块的密度,你认为下列步骤中,不需要的是( )。
用天平测量量筒的质量
用天平测量小石块的质量
往量筒内倒入适量的水,记录水的体积
用细线系住小石块,浸没在量筒的水中,记录量筒中石块和水的总体积
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
8. 宏俊同学将乒乓球漂浮在盐水中,此时若他再往盐水中加入一些清水,以你的判断,乒乓球将在盐水中( )。
上浮一点
下沉一点
保持原位置
先上浮,再回到原位置
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