1. 測量鉛筆的長度為 12.34 公分,則關於此次測量結果的敘述,下列何者錯誤?

0715 木柵校國三理化複習小考

Quiz
•
Chemistry
•
9th Grade
•
Hard
Cindy Cindy
Used 1+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
12.3 為準確值
小數點後的第二位數 4 為估計值
測量用的直尺最小刻度為 0.01 公分
測量的直尺最小刻度愈小,愈能增加準確性
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2. 質量100公克的甲銅塊和質量200公克的乙銅塊,其密度比為何?
1:2
2:1
1:1
3:2
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3. 用最小刻度為 mm 的直尺,測量物體長度正好為 18 cm 時,應記錄為下列何者?
180.0 mm
18.00 cm
0.1800 m
以上皆是
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
4. 將重量百分濃度為 20 %的糖水 100 g,加入適量純水稀釋至 5 %,稀釋後的糖水中各含有多少的糖和水?
糖 5 g 和水 95 g
糖 10 g 和水 390 g
糖 20 g 和水 380 g
糖 20 g 和水 400 g
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
5. 小明把保麗龍球用30cm3的鉛塊綁住放入水中、只放保麗龍球及把保麗龍球取出,量筒液面高度如圖所示,則保麗龍球的體積為多少cm3?(繩子體積不計)
4.0
24.0
26.0
54.0
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
6. 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,於是烏鴉銜幾顆金屬球放入花瓶中,使瓶內水面上升,最後順利喝到水。請問烏鴉投入最少數量的哪一種金屬球就可以喝到水?
(鐵的密度=7.9g∕cm3,銅的密度=8.9g∕cm3,銀的密度=10.5g∕cm3)
鐵球
銅球
銀球
不管什麼材質,都一樣
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
7. 丸尾使用直尺測量書桌的高度,其測量結果為92.56公分,則哪一個數字是經由估計而得到的?
9
2
5
6
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