
科学(4年级)
Authored by ETHAN Moe
Science
4th Grade
Used 2+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
凯琪:水和食油,哪个的密度比较高?
惠文:食油会浮在水面上,因此水的密度较高。
惠文应用了哪项科学程序技能?
假设
预测
观察
推断
2.
MULTIPLE CHOICE QUESTION
20 sec • 3 pts
文辉将苹果、橙和柠檬放进箱子M。然后,他将胡萝卜、卷心菜和菜心放进箱子N。文辉应用了哪项科学程序技能?
实验
推断
分类
观察
3.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
我们如何确定物质的化学性质?
观察测试物质后石蕊试纸的颜色变化
观察物质是否能让灯泡发亮
观察物质被拉扯后的情况
4.
MULTIPLE CHOICE QUESTION
20 sec • 3 pts
为什么我们在进行试验时必须正确地运用科学程序技能?
为了能更快地完成实验
为了获取更准确的实验结果
为了获取各种不一样的实验结果
5.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
我们可以根据以下哪项来做出实验的假设?
观察和经验
经验和想象
观察和想象
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
以下是利用排水法来计算不规则形状固体的体积的步骤。
P 把20ml的水倒入量筒内,并标示读数为X
Q 把物体绑在一条线上,放入装了水的量筒里
R 当物体完全进入水里后,记录新的水位读数,并标示为Y
S ?
哪项是步骤S?
将读数X减去读数Y,以获取水的体积
将读数Y减去读数X,以获取物体的体积
将读数X乘以读数Y,以获取物体的体积
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