
B3C5熱
Authored by 文宏 王
Science, Physics
8th Grade
Used 2+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附圖為小毅某次考卷的部分內容:
此題小毅答錯,老師要他回去訂正,則他只需將第一行算式中的數值100修改成126,就能獲得正確答案,是因為他未將體積100ml換算成?
比熱
熱量變化
溫度變化量
質量
加熱時間
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有甲、乙、丙三杯水,將三杯水混合,當混合後的水達熱平衡時,水溫為50℃。若混合過程中,水與外界無熱量的吸收與散失,則下列四組何者最有可能是甲、乙、丙三杯水混合前的溫度?
0℃、50℃、50℃
20℃、90℃、95℃
10℃、15℃、25℃
50℃、60℃、70℃。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
由相同材質組成的甲、乙兩物體,兩者均為固態,分別以相同的穩定熱源均勻加熱,其質量、上升溫度與加熱所需的時間如表所示。若甲、乙兩物體在加熱過程中,溫度均未達到熔點,熱源所提供的熱量均被兩者完全吸收,則表中的 X 應為多少?
60
120
180
360
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
今取四個不同條件的金屬塊甲、乙、丙、丁,四者條件的資訊如附表所示。四個金屬塊放置在室溫20°C的環境下一段時間後,四者的溫度均降為20°C。甲、乙、丙、丁四個金屬塊由初始溫度降至20℃時,何者所散失的熱量最多?
甲
乙
丙
丁
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
溫度固定為 25 ℃ 的環境下,一個玻璃杯內裝有 50 g 的純水,剛開始玻璃杯與純水的溫度皆為 45℃,一段時間後,兩者皆與環境達熱平衡。若此降溫過程中,純水散失的熱量與玻璃杯散失的熱量相等,且水的蒸發忽略不計,已知純水與玻璃的比熱分別為 1.0 cal/g •℃ 與 0.2 cal/g •℃,則玻璃杯的質量應為多少?
10g
50g
100g
250g
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在一大氣壓下,甲、乙、丙三鋁塊質量分別為M甲、M乙、M丙,已知三者最初的溫度不同,吸收相同熱量後,到達相同的溫度,如附表所示。若三鋁塊在升溫過程中均為固態且無熱量散失,則M甲:M乙:M丙為下列何者?
-1:1:3
1:2:3
2:3:6
3:2:1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
太陽能是一種再生能源,其中一種太陽能發電方式是使用拋物面碟式收集器來收集太陽能。圖中為接收器內部構造的示意圖,其內部為一個不鏽鋼管,外罩一個玻璃外殼,玻璃外殼與不鏽鋼管之間為真空部分,真空部分可有效的減少熱量的損失與管壁的氧化。接收器的玻璃外殼與不鏽鋼管間的設計,主要是減少熱量以下列哪幾種方式散失?
傳導、對流
對流、輻射
傳導、輻射
傳導、對流、輻射
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