
3年级科学 : 密度
Authored by ENG GAIK LOOI Moe
Science
3rd - 4th Grade
Used 248+ times

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17 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
小莫把物体P放入水里。她发现物体P的密度比水小, 哪项最有可能是物体P?
橡皮筋
橡皮
大番茄
小番茄
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
物体在水中是沉或是浮与物体的X有关。 X是指什么?
种类
体积
密度
轻重
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
小恒在三杯相同体积的水里加入不同分量的盐。 然后他在这三杯水里各加入不同的色素, 再将三杯水倒入量筒里。下图显示他的观察结果。
从盐分最多的分层开始排列三杯水。
R 、Q 、P
R 、P、Q
P、 Q 、 R
P 、R 、 Q
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
图中显示两种物体, Q 和 R,在水中的位置。
以下哪项有关Q和R物体的说明是正确的?
R物体 比 Q 物体 轻。
R物体 比 Q物体 重。
R物体 的密度小于水; Q物体 的密度大于水。
R物体 的密度大于水; Q物体 的密度小于水。
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
找出会浮在水上的物体(答案可超过一个)
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
橡皮筋的密度比水( ),
所以 会( )在水里。
大, 沉
大, 浮
小, 沉
小, 浮
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
根据上图,写出上述实验的观察结果。
加盐后,鸡蛋在水里浮起来了
加盐前,鸡蛋在水里浮起来了
加盐后,鸡蛋在水里沉下去了
加盐后,鸡蛋在水里没有改变
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