Accurate

Date: 2015-10-07; view: 465.

Choose the contextual meanings of the words written in bold in Text 1.

LANGUAGE FOCUS

Write a summary of Text 1.

Find key words and phrases which best express the general meaning of each part.

Answer the following questions.

Decide whether the following statements are true or false according to the text.

COMPREHENSION CHECK

1) Air is a mixture of gases, mainly hydrogen and oxygen.

2) Air has weight and a volume.

3) If gravity didn't exist, then air pressure would exist.

4) There is no difference between mass and weight.

5) Temperature and pressure are interrelated.

6) Air expands when it gets cold and contracts when it gets hot.

7) The amount of air contained within a box will vary with temperature and pressure.

8) Air at Standard conditions is denser than air at Normal conditions.

9) By compressing the sponge we can reduce its ability to hold water.

10) If we cool down hot air, the water vapour condenses out into liquid.

1) What is the definition of air?

2) What hard matter does air contain?

3) What do the variables depend upon?

4) How can air weight be demonstrated?

5) What is air pressure caused by?

6) Does air have temperature? Prove it.

7) What is the Standard Temperature and Pressure condition?

8) How is Normal Volume measured?

9) Does air contain water vapour? Prove it.

10) Hot air holds more water than cold air, doesn't it?