Bài học 8A - Role play - B1: Fun Science

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• ·        Fly away, balloons
• ·        Haha, John. The ballon won’t fly away like that.
• ·        The ballons flew away with a house in the cartoon
• ·        Those balloons were probably flilled up with helitum gas. You are exxhaling carbon dioxide. Carbon dioxide is heavier than oxygen so your ballon will not fly.
• ·        Oh, so, is helium lighter than oxygen?
• ·        That’s right.
• ·        Oh, I see. I thought balloons would always fly in the sky!
• ·        Oh
• ·        I completely soaked!
• ·        Roy, does it rain on the moon?
• ·        The moon does not have air or water, so it never rains.
• ·        Aha! And everything in space floats. So will my balloon be floating in space too?
• ·        Well, your balloon contains air that you blew in, and the moon is in a vacuum state. What do you think will happen?
• ·        Well? Will it shrink?
• ·        No, think more.
• ·        Hm..BOOM?
• ·        That’s right! BOOM!
• ·        There is a difference in pressure between outside and inside of the balloon, so the balloon gets bigger to equalize the pressure outside. Later, it will explode!
• ·        Oh, my goodness! My balloon!
• ·        People wear spacesuits for this reason.Astronauts wear spacesuits to proect their bodies!
• ·        Oh, I didn’t know that. I thought astronauts in spacesuits were just trying to look nice.
• ·        Wow! Science is always mysterious! It’s so fun!
• ·        John, didn’t you say you want to be an astronaut?
• ·        That’s right. I want to be an astronaut.
• ·        Oh right. I think going to our next class is what we have to do right now.
• ·        Oh, no! It’s time already! Let’s go