五年级科学常识比赛
Quiz
•
Science, Fun
•
5th Grade
•
Medium
HOE SEK LEE
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. 哪项说明是正确的?
生锈的因素是水和二氧化碳
盐水不会加快生锈的过程
生锈的物品将变得更加坚硬
生锈是铁与溶解在水的的水的氧气所发生的化学反应
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. 一名农夫研究不同的肥料是否会影响玉米的茂盛程度。试为玉米的茂盛程度下操作性定义。
玉米的树枝直径较大。
肥料越多,玉米越茂盛。
土壤的种类影响玉米的茂盛程度。
我们可根据所生产的玉米数量来确定玉米的茂盛程度。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. 可欣进行一项有关滑轮的数量如何影响提起重物所需的力的实验。这项实验的操作性变数是什么?
滑轮的数量
提起的重物数量
提起重物所需的力
滑轮上的绳子长度
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. 氧气含量较高的血液会被推送至
肺,并进行气体交换。
人体的各个部分。
心脏,再传送至肺。
肝,再被排除体外。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. 下面是有关K的特征。
~ 由较硬的肌肉组成
~ 把血液推送至全身
K 是什么?
肺
血管
血液
心脏
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6. 物种生存是指动物的什么本领?
继续生产
绝种
繁殖
吃与被吃
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7. 下面显示一条食物链。
红毛丹——蚂蚁——蜘蛛
根据以上的食物链,哪项是能量传递的正确顺序?
红毛丹,蚂蚁,蜘蛛
蜘蛛,蚂蚁,红毛丹
太阳,蚂蚁,红毛丹,蜘蛛
太阳,蜘蛛,蚂蚁,红毛丹
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