
质量和密度 复习
Quiz
•
Physics
•
9th Grade
•
Practice Problem
•
Easy
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9 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
“掬手为升”是我国古代的计量方法之一,掬即为双手捧,如图3,人双手捧起的米质量约为( )
3g
300g
30kg
300kg
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
(2024 广州)嫦娥五号携带月壤样品返回地球,从月球到地球,样品的质量( )
A.变为原来的一半
B.保持不变
C.变为原来的2倍
D.变为原来的4倍
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列关于托盘天平的使用,正确的是( )
称量前,游码放到标尺左端的零刻度线处
称量时,物体放在右盘,砝码放在左盘
称量时,若横梁不平衡,应调节平衡螺母
读数时,被测物体的质量与砝码的质量一定相等
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
用调节好的天平称金属块的质量,当加入一定数量的砝码后,发现天平的指针偏向分度盘的左侧,再加入最小的砝码,指针偏向分度盘的右侧,这时应该( )
A.向左调节平衡螺母
B.向右调节平衡螺母
C.取下最小砝码,向右移动游码
D.取下最小砝码,向左移动游码
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
天平平衡时,放在天平右盘中的砝码和游码的位置,如图4所示,所测物体的质量为( )g
A. 35.0
B. 35.6
C. 39.0
D. 38.6
6.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
一个钢瓶内装有密度为 6kg/m³ 的氧气,某次抢救病人用去其质量的三分之一,钢瓶内剩余氧气的密度为( )。
6kg/m³
4kg/m³
3kg/m³
2kg/m³
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(2024 沈阳)篆刻艺术是镌刻在中华文化文脉上的古老印记。作为国粹之一,被联合国教科文组织列入《人类非物质文化遗产代表作名录》。如图所示,一位艺术家正在篆刻一枚方章,与篆刻前相比,篆刻后方章的( )
A. 质量变小,密度变小
B. 质量不变,密度不变
C. 质量变大,密度变大
D. 质量变小,密度不变
8.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
关于质量和密度说法正确的是( )
冰化为水后,质量和密度都不改变
从地球带到太空的笔能“悬浮”于舱内,是因为笔的质量变小
一罐氧气用掉一半,质量减少,密度不变
将竹子削成筷子后,质量变小,密度不变
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在寒冷的冬天,裸露在室外的自来水管容易爆裂,其原因是水管中的水结冰后,( )
密度增大,体积减小
密度减小,体积增大
密度不变,体积不变
密度不变,体积增大
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