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这是一个关于热气球原理PPT，如果你有一个热气球，你会去哪里？热球为什会飞？材料、操作、讲解、注意；最早的热气球；一起做：制作热气球，如果你有一个热气球 你将去哪儿？ A Hot Air Balloon If I had a hot air balloon,I would fly around the world and see many wonderful places and things. I would fly to China to see the Great Wall and the panda bears. I would fly to Australia to see the koala bears and the kangaroos. I would fly to France to see the Eiffel Tower and to eat the French. I would fly to Holland to see the windmills and the tulips. I would fly to Egypt to see the pyramids and the Nile River. I would fly to England to see the Tower of London and to hear the bagpipes. I would fly to America to see the Statue of Liberty and the Grand Canyon. I would fly to Switzerland to see the Alps and to ski down the mountains. If you had a hot air balloon, where would you fly? 一个热气球 如果我有一个热气球，我要飞遍这个世界，去看许多奇妙的地方和事物。我要飞到中国去看长城和熊猫。我要飞到澳大利亚去看树袋熊和袋鼠。我要飞到法国去看艾菲尔铁塔和吃法国菜。我要飞到荷兰去看风车和郁金香，欢迎点击下载热气球原理PPT哦。
热气球原理PPT是由红软PPT免费下载网推荐的一款科学课件PPT类型的PowerPoint.
如果你有一个热气球 你将去哪儿？ A Hot Air Balloon If I had a hot air balloon，I would fly around the world and see many wonderful places and things. I would fly to China to see the Great Wall and the panda bears. I would fly to Australia to see the koala bears and the kangaroos. I would fly to France to see the Eiffel Tower and to eat the French. I would fly to Holland to see the windmills and the tulips. I would fly to Egypt to see the pyramids and the Nile River. I would fly to England to see the Tower of London and to hear the bagpipes. I would fly to America to see the Statue of Liberty and the Grand Canyon. I would fly to Switzerland to see the Alps and to ski down the mountains. If you had a hot air balloon， where would you fly? 一个热气球 如果我有一个热气球，我要飞遍这个世界，去看许多奇妙的地方和事物。 我要飞到中国去看长城和熊猫。 我要飞到澳大利亚去看树袋熊和袋鼠。 我要飞到法国去看艾菲尔铁塔和吃法国菜。 我要飞到荷兰去看风车和郁金香。 我要飞到埃及去看金字塔和尼罗河。 我要飞到英格兰去看伦敦塔和听风笛。 我要飞到美国去看自由女神和大峡谷。 我要飞到瑞士去看阿尔卑斯山和从山上滑雪。 如果你有一个热气球，你会去哪里？ 热球为什会飞？（音频）材料：塑料袋（轻便的）、吹风机1个操作： 1.打开塑料袋，倒置。将吹风机伸入塑料袋，并打开热气开关。 2.几秒钟后，关闭吹风机并拿开。 3.松开手，塑料袋会飘起来。 为什么又落了下来？ 最早的热气球当年，诸葛孔明被司马懿围困于阳平，无法派兵出城求救。孔明算准风向，制成会飘浮的纸灯笼，系上求救的讯息，其后果然脱险，于是后世就称这种灯笼称为天灯或孔明灯 一起做：制作热气球 （可制作孔明灯大小的，得验证） 一、条件：燃油50克，高度控制在10米以下。 二、制作所需器材： 取787MM X 1092MM拷贝纸10张，竹篾长5米，细线12米，细铁丝1米，棉团（棉花多少以吸收50克燃油为好）。 三、制作理论依据： 不受外力影响时的二力平衡。 四、制作： 将气球制作为磨菇伞状，根据计算可将上球冠周长换算为1。2米，再与一个下口周长为1。2米的圆柱台（即三张上底为0。6米，下底为0。4米的梯形拷贝纸围成）相结合即可。 五、注意事项： 应尽量考虑减轻气球所受阻力问题：竹篾应选择细又不影响形状的，燃料用棉吸好固定在铁丝上即可。 六、气球放飞： 两人配合，用线拴在气球下端，点燃棉团后，约30秒后气球腾空，且在固定高度保持平衡7分钟。
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