1819第二次考試溫習題目
Quiz
•
Science
•
7th Grade
•
Hard
Kit Yi Cheung
Used 5+ times
FREE Resource
53 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
儲存在電池中的能量是
電能
熱能
勢能
化學能
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
兩隻重量不同的小鳥正以相同速度一起飛行,以下哪項敍述是正確的?
較輕的那隻小鳥具有較多動能。
較重的那隻小鳥具有較多動能。
較輕的那隻小鳥具有較多勢能。
較重的那隻小鳥具有較多勢能。
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
15 000 J =
1.5 kJ
15 kJ
15 000 cal
15 kcal
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
一列過山車正向下滑,以下哪項是所涉及的能量轉換?
勢能➜動能
動能➜勢能
電能➜動能
電能➜勢能
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
一名跳傘者正以不變的速率向下墜,他的動能和勢能有甚麼變化?
動能 勢能
A. 增加 減少
B. 減少 增加
C. 保持不變 減少
D. 保持不變 增加
A
B
C
D
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
電能是家居普遍使用的能量,因為
(1) 它能被轉換成其他形式的能量。
(2) 它能被電線傳送。
(3) 它能被創造。
只有(2)
只有(1)和(2)
只有(2)和(3)
(1)、(2)和(3)
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪項組合是正確的?
電器 有用的能量 浪費掉的能量
A. 風筒 動能和熱能 聲能
B. 電視機 光能和熱能 聲能
C. 電動牙刷 聲能 動能
D. 燈泡 熱能 光能
A
B
C
D
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