八上自然1-1~1-2
Quiz
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Physics
•
8th Grade
•
Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
五位學生用同一支直尺,分別測量同一支原子筆的長度,五位學生測量紀錄分別為14.52公分、14.53公分、20.55公分、14.55公分與14.58公分,則下列何者是此次測量紀錄,正確的原子筆長度之平均值記錄?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
禎禎測某個物體的長度時寫出的測量結果是94公尺又15公分,請問最小刻度是多少?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
小賴使用歸零後的等臂天平來測量購買麵包的質量,小賴將麵包至於天平左盤,當達平衡時,右盤中有二個 10g的砝碼、三個2g的砝碼,且騎碼在天平橫梁的第十五個刻度線上。已知天平的橫梁上每一刻度代表 0.1g,則麵包的質量為多少g?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一塊長20公分、寬5公分、厚2公分的金屬塊,質量為540公克,如果將金屬塊截去三分之一,則剩餘部分的密度為多少g∕cm3?
2.7
1.8
0.9
3.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
水在哪一個溫度下,體積最小,密度最大?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一般市售的飲料適合冷藏,但不適合冷凍的主要原因是什麼?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一隻烏鴉想喝花瓶中的水,但嘴巴伸不進花瓶中。附近有多顆不同材質,但質量皆為10公克的金屬球,於是烏鴉將一些球放入水中,使水面上升,最後順利地喝到水。請問以下何種材質的球,可讓牠利用最少數量的金屬球喝到水?(密度:銅8.9 g/cm3;鐵7.9 g/cm3;鋁2.7 g/cm3)
鐵
銅
鋁
無論什麼材質都相同
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