2-2~2-4Science

2-2~2-4Science

1st - 5th Grade

50 Qs

quiz-placeholder

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2-2~2-4Science

2-2~2-4Science

Assessment

Quiz

Science

1st - 5th Grade

Practice Problem

Hard

Created by

陳耀民 老師

Used 1+ times

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50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

兩個互相扣住的齒輪,一個齒輪轉動的方向如果是順時針,另一個齒輪轉動的方向會是逆時針。

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

大、小兩個齒輪相扣,齒數分別是 20 齒和 10 齒,大齒輪轉動一圈,小齒輪會轉動半圈。

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

定滑輪的軸心相當於槓桿的支點,滑輪的半徑是施力臂也是抗力臂,所以不省力也不費力。

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

輪軸原理中,「施力於輪」表示施力臂比抗力臂長,所以省力。

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

由大、小齒輪組成的齒輪組中,大齒輪轉動的圈數會比小齒輪的多。

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

應用流體傳送動力的機械其主要的目的除了傳送動力之外,還可以省力。

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

使用定滑輪搬運重物,可以省約一半的力。

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