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Unit 22 Lesson 3

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Unit 22 Lesson 3
Space crafts
Objectives: By the end of the lesson you will have
• matched a shape with its name
• completed a paragraph with the help of an illustration
• corrected mistakes in a paragraph
• written a paragraph with the help of notes
A What do you call the following shapes? Select n name from the box and write it under each shape.

Picture



disc-shaped, elliptical, spiral, conical, cylindrical, umbrella-shaped, rectangular, circular


B Now took at the following picture of a rocket and describe its shape using words from exercise A.

Picture

C The following information about rockets is jumbled up. Work in groups and arrange them in the right order by putting numbers beside each.
A rocket
- a rocket is launched from a space centre
- the stages fall off to make the load less
- as the Earth has tremendous gravity, a rocket must reach a speed of 4Q,000 km per hour to get out of this gravity
- the cargo that a rocket carries is called a payload
- the liquids explode when mixed which pushes the rocket forward
- the payload may be astronauts or satellites
- the escape velocity is the speed which u rocket needs u> yet out of the Earth's
gravity
- there are about fifteen launch sites around the world
- the heavier the rocket the more fuel it will need
- the first idea of a rocket was developed by Russian schoolmaster Konstantin
Tsiolkovski in 1903
- the larger the rocket the heavier the payload can be
- the fuel is not carried in one tank but in different containers
- rocket fuel consists of two liquids
- a rocket needs to carry huge amounts of fuel to pick up speed
- the containers are called stages
- space travel actually started when American engineer Robert Goddard launched the first liquid fuel rocket

Now arrange the ideas to make a full paragraph. Remember to use punctuation marks. You may join two or more ideas in a single sentence.
D Using the information from exercise C, select the correct answer.
1 If a payload is heavy, a rocket will need (a) more fuel (b) less fuel.
2 The credit for developing u rocket goes to (a) a Russian (b) an American.
3 The containers which carry fuel (a) can be reused (b) cannot be reused.
4 Rockets are launched from (a) different places of the world (b) one place only.
5 Astronomers are carried in (a) a container of the rocket (b) a separate part.
6 When a rocket attains the speed of 38,000 km per hour it will (a) be beyond the Earth's gravity, in outer space (b) still be within the Earth's atmosphere.
E Read the following passage. There are some mistakes in it which have been underlined. Correct them.
The Space Shuttle
Rockets are very expensive as it can be used only once. Scientists has therefore developed an reusable spacecraft called a Space Shuttle which take off like a rocket but do not get destroyed as it come back to earth. It can also be use to launch satellites into space, retrieve them from space if any repairing is needed and allow about 7-8 scientists to carried out experiments m space. It do not fall under water like the command module of a rocket but smoothly land on a runway like a plane. When it is ready for the next launching, new fuel tanks is fitted in it. This way scientists can save the huge expense of building a new rocket every time they need one.
F Write 5 sentences showing the difference between a rocket and a space shuttle.
Focus:
Skills.
Reading,
speaking,
writing. Functions.
Describing, comparing.
Grammar/Structure.
Agreement of subject and verb.
Vocabulary.
massive, tremendous, gravity, launching, sophisticated, reusable, satellite.







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