Task 3. Complete the sentences using the words in the box. You will need to use one word twice.
compression, deformation, elongation, extension, tension
1. A stretching force is called
2. A crushing force is called
3. Extension is also called
4. Tension causes .. or
5. Tension or compression cause
Task 4. Match the tivo parts to make correct sentences.
1. If a material is stiff
2. If a material is brittle
-
3. If a material is plastic
4. If a material yields
5. If a material fractures
6. If a material is elastically deformed ...
a) it is malleable and/or ductile.
b) it has low elasticity and low tensile strength.
c) it has low elasticity and high tensile strength.
d) it has been extended to a point before its elastic limit.
e) it has been loaded beyond its ultimate tensile strength.
1) it has been significantly plastically deformed, but not broken.
A powerful idea can change the world.
Do you have any idea where she could be?
Nick, this is a very good idea for the birthday party.
Every idea deserves to be respected in a group of friends.
An essay is based on personal ideas and thoughts.
Tourists are supposed to book their tickets for the plane before flight.
You can book this apartment for 100 dollars.
He was booked for ignoring a trafic signal.
My classmates booked my favorite band for the party.
To book a ticket you need to show your passport and payment.
Sam wanted to find the right answer to his questions.
Trained dogs are used to find evidences.
Find the right people and treasure their friendship.
I had to find Michael in the library in order to get my money back.
In order to find the necessary clothes, you need to spend a lot of time in the supermarket.
In the essay, conclusion should be short, 4 sentences.
Your conclusion is not suitable for the report.
Mr John made a poweful conclusion at the end of the lesson.
Conclusions should be made with a serious attitude.
Don't make conclusions too soon, try to find the truth first.