华民小学四年级科学常识比赛 Science Quiz Year 4

以下哪种情况会使人类感觉呼吸较困难？

Which of the following will make people hard to breathe?

• 天气比平日冷时

  cooler weather

• 患上伤风感冒时

  having flu

• 做了热身运动后

  after warm-ups (exercise)

• 喝了热的饮料后

  after drinking a cup of hot drink

图中显示人类的某个器官。以下哪项是图中器官的主要功能？

Picture showed an organ in human. Which is the function of this organ?

• 保护气体不受污染

  to protect the gas from being polluted

• 使体内充满氧气和水分

  to fill the body with oxygen and water

• 使氧气和二氧化碳可以进行交换

  to exchange the oxygen and carbon dioxide

• 把体内的二氧化碳变成有用的气体

  to change the carbon dioxide to become useful gas.

5）根据所进行的活动。从呼吸率较高排列到较低的呼吸率。

According to the activities, list the breathing rate from the highest to the lowest.

• 睡觉，看书，跑步

  sleeping - reading - jogging

• 爬山，睡觉，洗碗

  climb mountain - sleeping - washing dishes

• 骑自行车，钓鱼，睡觉

  riding a bike - fishing - sleeping

• 上网，踢足球，看电视节目

  surf internet - kick football - watch tv show

全部都是科学程序技能，除了

All below are science process skills, except

• 运用空间与时间的关系

  Use the relationship between space and time

• 诠释资料

  Interpreting information

• 检查

  inspection

• 精确解释法

  Precise interpretation

1. 下列哪一些刺激不会使我们作出快速的反应？

which of the following stimulus DOEST NOT make us react fast?

• 当电话铃声突然响起时

  when the phone rang

• 当蚊虫就要飞进眼睛时

  mosquito fly into our eye

• 当太阳从东边升起时

  sun rises from the east

• 当一个皮球突然抛向我们时

  when a ball is thrown to us

为什么莱佛士花不能自己制造食物？

Why the refflesia cannot make its own food?

• 它不会呼吸

  it cannot breathe

• 它以捕食昆虫为生

  it catches bugs to live

• 它没有叶绿素

  it does not have chlorophyll

• 它没有茎

  it does not have stem

太阳系中最热的行星是哪个？

Which is the hottest planet in the solar system?

• 水星

  Mercury

• 金星

  Venus

• 火星

  Mars

• 木星

  Jupiter

保丽龙需要多少年才能分解？

How long does a polystyrene need to decompose?

• 500 年

• 1000 年

• 5000 年

• 10000 年

铁制品在什么液体内不会生锈？

What liquid won't cause a metal to rust?

• 盐水

  salt water

• 食油

  cooking oil

• 可乐

  coke

• 沸水

  boiled water

以下物品中，其长度接近15cm的是哪个？

which item below is nearest to 15cm?

• 普通铅笔的长度

  length of a pencil

• 学生桌子的高度

  height of student's desk

• 科学课本的厚度

  thickness of Science textbook

• 课室黑板的宽度

  Wideness of classroom's blackboard