看見自然EP42:燃燒與滅火

看見自然EP42:燃燒與滅火

Assessment

Interactive Video

Science

5th Grade

Hard

Created by

Hui M

Used 1+ times

FREE Resource

4 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

紙張浸泡在某種液體中點燃後卻毫髮無傷,其秘密是什麼?

紙張浸泡的是純酒精

紙張浸泡的是純水

紙張浸泡的是水加酒精

紙張經過特殊處理

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

燃燒需要同時具備哪三個要素?

可燃物、助燃物、高溫

可燃物、助燃物、達到燃點

燃料、氧氣、火源

易燃物、空氣、熱源

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

將紙張浸泡在純酒精中點燃後,紙張會完全燃燒,這是因為什麼?

酒精的燃點比紙張高

酒精燃燒時會吸收紙張的熱量

酒精燃燒時會使紙張達到燃點

純酒精是助燃物

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

根據燃燒三要素的原理,下列哪種方法無法有效滅火?

用水澆熄火源

用蓋子蓋住燃燒物

移除燃燒物周圍的氧氣

增加可燃物的數量

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