
2022统考题-2
Quiz
•
Physics
•
9th Grade
•
Hard
LEE SIEW SIEW 李绣秀
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20 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列有关布朗运动的描述,哪项是不正确?
温度越高布朗运动越明显
布朗运动是永不停息的
布朗运动是分��的运动
布朗运动是无规则的
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列物态的变化都需要从外界吸收热量,除了:
舞台上利用干冰形成的"烟幕"效果
将石油气压缩储存在钢罐里
搽在手上的酒精挥发
衣柜的樟脑丸变小
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有三个质量和大小相同的空心铜球、铁球和铝球。以下哪项是球体中空心部分由大至小的体积排列?(ρ铜 = 8.9g/cm3,ρ铁 = 7.9g/cm3, ρ铝 = 2.7g/cm3)
铜球、铁球、铝球
铝球、铁球、铜球
铁球、铜球、铝球
铁球、铝球、铜球
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪个现象不符合质量守恒定律?
生锈的铁块比原来的铁块重
电解水的反应前后质量不变
碳酸钙固体敲碎后质量不变
木材燃烧产生灰烬后质量变小
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当小华进入一个室内泳池时,他的身体与水会有怎样的热传递情况?
没有发生热传递
热量从身体传递给水
热量从水传递给身
同等热量在身体与水之间传递
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果某音叉发出的音为440Hz,这种声音在空气中传播的速度为340m/s。求这种声音的波长。
17/22 m
17/44 m
34/22 m
22/17 m
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
波的叙述:波长比可见光长, 能量比红光长, 肉眼看不见
以下哪项应用于上述的电磁波段中?
医院或厨房经常用此种波杀灭细菌
医院常用它对人体进行拍片检查
可对癌症病人进行放射治疗
收音机接收的电磁波
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