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力與摩擦力

Science

5th Grade

Used 115+ times

力與摩擦力
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28 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下雪會使地面的摩擦力變大,為了安全上的考量,車輛在雪地裡行駛必須在車輪上掛雪鏈。

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

飛機的流線型外型是為了減少空氣中的摩擦力。

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在腳踏車的齒輪和鏈條上油,可以防止金屬零件生鏽,也可以減少運轉時產生的摩擦力。

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

襪子的底部有止滑的顆粒,可以增加襪底與接觸面的摩擦力。

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

摩擦力在我們的生活中只會造成不方便。

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

海綿受力後會出現受力不均的現象,所以不適合當作測量力的工具。

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

進行拔河比賽時,兩隊所施的力方向相同。

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