
五上第四單元part2
Quiz
•
Science
•
5th Grade
•
Practice Problem
•
Medium
陳秀婷 陳秀婷
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27 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
下列有關摩擦力的敘述,請在正確的( )中打V
騎腳踏車不繼續踩動踏板時,因為摩擦力的作用,腳踏車會慢慢停下來。
在平滑的鏡面上移動的物體不會受到摩擦力的作用。
在物體上添加潤滑油,或加裝滾輪,可以減少摩擦力。
摩擦力會讓我們施力時較費力,所以任何工具的摩擦力越小就越好用。
鉗子上有紋路,是增加摩擦力,便於夾緊物品。
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
有些物品在受力時會變形,停止受力之後還可以恢復原狀,下列物品中具有這個特性的物品請打V
黏土
彈簧
鬆緊帶
鋁罐
橡皮筋
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
甲、乙、丙三人最多分別可以推動25、40、35公斤重的重物,如果分別兩兩進行拔河比賽,誰比較可能獲勝?
甲
乙
丙
無法判斷
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一項不是彈簧秤可以測量力的大小的原因?
彈簧秤中的彈簧具有彈性
彈簧秤中的彈簧長度隨重量的變化具有規律性
彈簧秤使用後可再恢復原狀
彈簧秤具有磁力
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列哪一種情形是摩擦力造成的?
彈簧受重力變長
蘋果從樹上掉下來
在地板上滾動的球慢慢停下來
賽跑時,選手在終點線前停下來
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物體受力作用時,不會產生什麼變化?
形狀改變
位置移動
運動速度改變
顏色改變
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
關於用手從上往下壓皮球的實驗,下列哪一個敘述是錯誤的?
用手壓皮球,皮球會變形
用手壓皮球時,皮球運動狀態會改變
如果皮球原先的高度是20公分,被壓後高度會小於20公分
越用力壓皮球,皮球會越扁
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