
0807小考燃燒
Quiz
•
Science
•
10th Grade
•
Practice Problem
•
Easy
曾 老師
Used 2+ times
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15 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
下列何種反應屬於化學變化?
固態蠟燭變成液體蠟
液體蠟變成氣體蠟
乾冰昇華成二氧化碳
燭火燃燒
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
蠟燭的火焰可分成外焰、內焰與焰心,上述何者的「溫度」最高?
外焰
內焰
焰心
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
蠟燭的火焰可分成外焰、內焰與焰心,上述何者的「亮度」最高?
外焰
內焰
焰心
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
燃燒三要素,不包含以下哪個?
風速
助燃物
可燃物
燃點
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
將裝水的紙杯放置在燭火上,為何紙杯沒有燃燒?
沒有助燃物
沒有可燃物
溫度還沒到達紙杯燃點
紙杯不是可燃物
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
發生森林大火時,消防隊員將周圍的樹木砍掉,形成「防火巷」,主要是為了何種緣故?
讓消防車出入
空氣流通
移除可燃物
保持美觀
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
若是直接燃燒一包麵粉,卻無法燒起,主要是因為不具備什麼條件而不會引起塵爆?
溫度不夠高
活性不夠高
接觸面積不夠大
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