四年級第三段 TIMSS 練習二
Quiz
•
Science
•
4th Grade
•
Practice Problem
•
Easy
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5 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
白天時,在黑暗的房間內透過窗子往外望,可以清楚地看見外面的人,但是外面的人郤看不見房間裏的人,請問原因何在?
從房間裏的人所反射出來的光線不足
光線不能穿過窗子兩次
室外光線不能穿透窗戶
陽光不及其他光源般光線強烈
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
下列那一頂是化學變化?
甲元素的表面被打磨得非常光滑
乙元素被加熱導致蒸發
丙元素靜置於空氣中,產生白色且具有粉狀的表面
丁元素自一混合物中過濾分離出來
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
下列哪一項魚的器官與人類的肺部有相同的功能?
腎臟
心臟
腮
皮膚
4.
OPEN ENDED QUESTION
15 mins • 1 pt
木星的體積比月球大,但在地球上來看,則木星比月球小,為甚麼?
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5.
OPEN ENDED QUESTION
15 mins • 1 pt
一個玻璃杯盛有水和冰共重300克。冰剛剛完全溶解後,你認為重量會是多少?試加以解釋。
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