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课件网) Let’s review Think： What problems do astronauts face during space missions Share your ideas with your partner. Examples: ① Astronauts must stick their sleeping bags to the wall. ② If astronauts do not exercise regularly, they will get very weak. ③ ... Pre-listening Look at the picture and think: ① What can you see in the picture？ ② What problem do you think this lesson will be about Is it a big problem Space junk. I think it could be a big problem because... You will listen to a lecture about space junk. Can you guess which topics the speaker will mention What is space junk Where does it come from Why is it a big problem What can we do about it While-listening 1. Listen for the gist—check your predictions Tick the things mentioned in the lecture. What is space junk Where does it come from Why is it a big problem What can we do about it √ √ √ The main idea of the lecture: What space junk is and why it is a big problem to us. While-listening 2. Match the sections with key words—build the structure ① What is space junk ② What types of space junk are there ③ Why is space junk a big problem A. The dangers of space junk B. The definition of space junk C. Examples of space junk While-listening Detailed listening Tip: Read the questions before you listen. Pay attention to key words from the questions (e.g. gloves, satellites, rockets) while you listen to the lecture. While-listening Detailed listening (Activity 3, P104): Tip: Read the questions before you listen. Try to connect the questions to the topics of the different parts of the lecture. Pay attention to key words from the questions (e.g. gloves, satellites, rockets) while you listen to the lecture. A & B C C √ √ √ √ √ √ Which part do these questions refer to Definition Types of space junk Dangers of space junk Space junk Definition _____ in space, (e.g. parts of old _____) Types of space junk _____ that stopped working and couldn’t be brought back things dropped by _____ during the spacewalk (e.g. cameras, _____, tool bags) Dangers of space junk can _____ a spacecraft or satellite creates more junk in _____ can make space missions very _____, and even make space travel _____ While-listening Detailed listening: Listen again and complete the notes. unwanted objects rockets satellites astronauts gloves destroy orbit dangerous impossible Post-listening (Read audio script) There are tens of thousands of man-made objects in orbit around the Earth. Many of them are useful things, like space stations and weather satellites. However, people have left lots of unwanted objects in space too, such as parts of old rockets. These objects are known as space junk. Since the 1950s, people have sent over 10,000 satellites into space. Many of these satellites have stopped working, but they are still in orbit because it is too expensive to bring them back to the Earth. Astronauts have also dropped things during their spacewalks, su ... ...
