2026年名校金典课堂九年级英语上册人教版成都专版


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《2026年名校金典课堂九年级英语上册人教版成都专版》

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三、完成图表。根据短文内容,完成图表格中所缺信息。

Physics can be amazing. The same force that makes planes fly can also cool down your bedroom on a hot summer night. This is called Bernoulli's Principle(伯努利定律).
Recently,a science teacher's TikTok video got a lot of attention. In the video,the teacher showed how to quickly fill a large bag with air using Bernoulli's Principle.
Bernoulli's Principle is named after Daniel Bernoulli,a Swiss physicist who introduced it in 1738. It says that when fluids(流体)—like water and air—move quickly,they create low-pressure spaces. Faster movement means lower pressure. The higher-pressure fluids will rush to fill the low-pressure space.
In the video,the teacher blew into a large bag 10 times with his mouth. But he couldn't fill the bag with air like this. Then,he put the bag a little far away from his mouth and blew hard one time. The moving air created a low-pressure space inside the bag. Air rushed in,filling the bag in just one second!
How does this make a plane fly? The secret is the shape of the wings. The shape causes the air moving over the top of the wing to go faster than that moving under the wing. This creates a low-pressure space over the wing. Higher-pressure air from below rushes up,lifting the plane off the ground.
You can also put Bernoulli's Principle to work at home. If your bedroom is full of hot air,you can cool it quickly by pointing an electric fan to the window a little far away. When you are cooking,you can use the machine over you to let hot air out. Firefighters use the same trick to make the smoke out.

答案: facts; Explanations; failed; blow; faster

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