3.4 Extending skills


asking for information • reporting information


A You are going to listen to a continuation of the lecture in Lesson 3.2. 1 Make a list of points from that lecture. 2 What is the lecturer going to talk about today? (Clue: Lesson 3.2 research task) 3


≤Listen to the end of the last lecture again and check your ideas.


B How can force be applied to a mechanical component? 1 Make a list of ways. The slides for today’s lecture on the opposite page may help you. 2


≤Listen to Part 1 of the lecture and check your ideas.


3 What is a good way to make notes from this lecture? Prepare a page in your notebook. C≤Listen to Part 2 of the lecture. Make notes. If necessary, ask other students for information.


D≤Listen to Part 3 of the lecture. Mark the forces involved in operating a table vice on slide 6, opposite.


E≤Listen to the final part of the lecture. Why does a mechanical engineer need to understand the qualities of materials?


F Imagine you had to report this lecture to a student who was absent. 1 Study the transcript on page 119. Find and underline or highlight key sections of the lecture.


2 Find and underline key sentences from the lecture. 3 Make sure you can say the sentences with good pronunciation. 4 Compare your ideas in groups.


G Think of a word from this unit for each definition. forming a curve a uniaxial pushing force opposite parallel forces a uniaxial pulling force a turning force


H Match the words and definitions. 1 ductile


2 elastic 3 flexible 4 hardness


6 rigid 7 strain 8 stress


n n n n


e


5 plastic (adj) n n n n


a doesn’t return to its original shape b reaction to a force


c has a high fatigue point d resists wear


e easy to stretch


f returns to its original shape g deformation caused by stress h difficult to bend


I Write about the lecture slides using words and phrases from Exercises G and H.


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