4年级科学评估'20(第1课至第4课)
Quiz
•
Science
•
4th Grade
•
Practice Problem
•
Medium
LAI Moe
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40 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
进行实验前,康乐认为一个人所进行的活动越激烈,其呼吸率越高。康乐是在作出 __________ 。
观察
预测
假设
推断
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
表1显示一项实验的结果。
哪项有关时间与凤仙花的高度的假设是正确的?
时间越长,凤仙花越低
时间越长,凤仙花越高
时间随着凤仙花的高度而改变
凤仙花的高度随着时间的变化而下降
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
表2显示凯铭进行某项实验时所记录的实验结果。
哪个磁铁的磁力最强?
棒形磁铁
环形磁铁
条形磁铁
U形磁铁
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在一项实验中,玮伶分别尝试了柠檬汁和西瓜汁的味道。她运用了哪种科学程序技能?
观察
沟通
预测
推断
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
图1显示四位学生读取液体体积时眼睛的位置。
哪位学生以正确的方式来读取读数?
I
II
III
IV
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
哪项有关控制变数的说明是正确的?
一项实验只可以有一个固定性变数。
固定性变数是实验中必须观察的事项。
操纵性变数是实验中必须改变的事项。
反应性变数是实验中保持不变的事项。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
图2显示一项实验的观察结果。
这项实验的反应性变数是什么?
水的温度
量筒的大小
玻璃弹珠的数量
实验后,量筒里水的体积
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