
自然L3-3
Authored by 李 韋賢
Science
5th Grade
Used 8+ times

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13 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
在電路的測電實驗中,發現砂糖水不會使LED燈發光,這可以推論所有中性的水溶液都不會導電。(3分)
O
X
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
家用電的電壓比較高,如果手是潮溼的不要去拔電器的插頭,也不要去開電器的開關,避免觸電。(3分)
O
X
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
當電線、電池和燈泡連接成通路時,燈泡會發亮。(3分)
O
X
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
測試水溶液導電性時,直接利用插座送來的電力既方便又安全。(3分)
O
X
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
直接利用眼睛觀察水溶液的導電性是最準確的。(3分)
O
X
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
發光二極體又稱「 」?(3分)
LET
LED
LEE
LDD
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
下列哪種水溶液不會讓電路測試中的發光二極體發亮?(3分)
砂糖水
檸檬酸
醋
小蘇打水
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