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Worksheets科学 6 简单机械与复杂机械
Total questions: 15
Worksheet time: 15mins
上图显示一个小孩正在从滑板上滑下。
以下哪项利用如上图相同的原理来操作？
Diagram above shows a child is sliding down.
Which of the following diagrams is using the same principle with the above diagram?
上图显示方向盘。
哪项物品涉及的简单机械原理与方向盘相同？
Diagram above shows a steering wheel.
Which of following tools use the same principle as the steering wheel in diagram above?
手锯
Saw
手表
Watch
切纸刀
Paper cutter
水龙头
Tap
上图显示灯泡和灯泡插座。
哪项是上图所涉及的简单机械原理？
Diagram above shows a light and a socket.
Which of the following simple machines principle involved in the above picture?
螺旋
Screw
杠杆
Lever
尖劈
Wedge
轮轴
Wheel and axle
哪项搭配是正确的？
Which of the following classifications is correct?
闹钟 - 杠杆
Alarm Clock - Lever
擀面棍 - 滑轮
Rolling pin - Pulley
刀片 - 螺旋
Cutter - Screw
梯子 - 斜面
Ladder - Inclined plane
上图显示一个工人正在推独轮手推车上斜坡。
在这项活动里，没有涉及哪个简单机械原理？
Diagram above shows a worker is pushing a wheelbarrow.
Which of the following simple machines is not using in this activity ？
杠杆
Lever
滑轮
Pulley
斜面
Inclined Plane
轮轴
Wheel and axle
如果没有使用简单机械，以下哪个活动就无法进行？
If simple machines is not used, which of the following activities cannot be performed?
看书
reading book
爬树
Climbing tree
从墙上拔出铁钉
Pulling the nail from the wall
唱歌
Singing
以下是简单机械和复杂机械的分类，哪个是不正确的？
Below are the classifications of simple machines and complex machines, which of the following classifications is incorrect?
简单机械 simple machine 复杂机械 Complex machine
剪刀 Scissors 自行车 bicycle
简单机械 simple machine 复杂机械 Complex machine
螺丝起子 Screw driver 手摇钻 Hand drill
简单机械 simple machine 复杂机械 Complex machine
G 型钳 G-clamp 起重机 Crane
单机械 simple machine 复杂机械 Complex machine
切纸刀 Paper cutter 斧头 axe
→ 尖劈 Wedge
→ 斜面 Inclined Plane
上面说明显示简单机械的原理在 Q工具。
下列哪项是Q工具？
The list above shows the principles of simple machines found in tool Q.
Which of the following is tool Q?
上图显示两个不同齿数的齿轮嵌合在一起。
哪项有关上述齿轮的说明是正确的？
Diagram above shows two gears with different numbers of teeth fit together.
Which of the following statements about the gear is correct?
两个齿轮转动的方向是相同的
Both of the gears rotate in the same directions
小齿轮转动的圈数比大齿轮多
The rotation of the small gear is more than the big gear
小齿轮转动3圈时，大齿轮也会转动3圈
The small gear rotates 3 times, big gear rotates 3 times too
当小齿轮牵动大齿轮时，大齿轮转动的较快
When the small gear is driving the big gear, the big gear rotates much faster
上图显示一辆收割机。
下列哪项是应用收割机的效果？
Diagram above shows a harvesting machine.
Which of the following is the effect of using this machine?
收割时间会减少
The time taken for harvesting decreases
应用肥料的数量会减少
The use of fertilizers decreases
稻田的面积会减少
The area of the paddy field decreases
工人的数量会减少
The number of the worker decreases
上图显示手表。
哪项有关手表的说明是正确的？
Diagram above shows a watch.
Which of the following statements is correct?
手表是简单机械
Watch is a simple machine
手表有支点、重点和力点
Watch consists fulcrum, load and effort
手表有齿轮、螺旋和轮轴组成
Watch is made up of gear ， screw and wheel and axle
手表属于第一类杠杆
Watch is categorized in first type of lever
上图显示两种楼梯。
哪种楼梯较为省力？为什么？
Diagram above shows two types of stairs
Which of the following stairs are more lesser force? Why?
X 楼梯 ， 因为它的斜度较小
Stair X, because it inclined plane is less steeper
Y 楼梯 ， 因为它的斜度较小
Stair Y, because it inclined plane is less steeper
X 楼梯 ， 因为它的斜度较大
Stair X, because it inclined plane is more steeper
Y 楼梯 ， 因为它的斜度较大
Stair XY because it inclined plane is more steeper
在制造可永续使用的机械时，下面哪项材料最有可能会被考虑？
Investing sustainable machines, which of the following aspects must be considered ?
W 材料会污染空气
Material W can pollute the air
X 材料不耐用，也不能再循环
Material X is not durable, cannot be recycled
Y 材料成本低
The cost of material Y is low
Z 材料保养费高
The maintenance of material Z is high
上图显示一个小孩正在骑自行车。
小孩为何毫不费力就能使自行车行走一段路程？
Diagram above shows a boy is cycling .
Why could a boy make a bicycle moving a distance without any effort?
大齿轮改变小齿轮旋转的方向
Big gear can change the direction of the small gear while rotating
两个齿轮向相同的方向旋转
Both of the gears rotate in the same direction
踏板连接的齿轮一圈可带动小齿轮转动很多圈
The big gear that is connected to the pedal can transfer the movement to the small gear which can rotate many times
上图显示4枚螺钉。
从最省力至最不省力的次序排列上面的螺钉。
Diagram above shows four screws.
Arrange the four screws in order from the least force to the less force.
P 、S 、R 、Q
Q.、R 、 S 、P
P 、R 、S 、Q
P 、S 、Q 、R
