
Ch05(5.2) 能量 L1
Quiz
•
Science
•
1st Grade
•
Practice Problem
•
Hard
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. 下列哪項不是能量的單位?
A. 焦耳
B. 千焦耳
C. 卡路里
D. 攝氏度
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. 柏樑利用一盞電燈進行實驗。他發現電燈輸出的光能比輸入的電能少。下列哪項最能解釋上述現象?
A. 該盞電燈不能正常運作。
B. 該盞電燈把部分能量以電能的方式儲起來。
C. 在能量轉換過程中,該盞電燈消耗了部分能量。
D. 在能量轉換過程中,該盞電燈把部分能量轉換為以熱能形式出現的廢能。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. 柏豪利用平底鍋和火爐煎火腿。下列哪項是在該能量轉換過程中的有用輸出能量?
A. 火爐提供的熱能
B. 火腿的熱能
C. 平底鍋的熱能
D. 以上皆是
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. (延展) 一把風扇的能源效益為20%。已知輸入能量為100 kJ。風(空氣)獲得的動能為多少?
A. 20 kJ
B. 60 kJ
C. 80 kJ
D. 100 kJ
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
把答案填寫在橫線上。
在能量轉換過程中,轉換前的總能量總是 (a) _______________ (大於/等於/小於)
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
把答案填寫在橫線上。
為能量 (b) _______________ 定律。
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