问题一：热气球能够飞起来，是因为？
一起去做热气球
Interactive Video
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Science
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3rd Grade
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Easy
chaonan ping
Used 2+ times
FREE Resource
3 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A. 热气球里有火
B. 热气球里的空气比外面的空气热
C. 热气球被风吹起来
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
问题二：以下哪种情况，热气球会飞得低一些？
A. 热气球里的空气变热
B. 热气球里的空气变冷
C. 热气球的绳子更粗
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
问题三：艾小语想制作一个迷你热气球，他应该选择以下哪种材料来做气球部分？
A. 厚重的帆布
B. 轻薄的塑料袋
C. 金属箔纸
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