Vocabulary exercises

Text C

Text B

Text A

Unit 1. Energy

Unit 5. Fluid Dynamics 23 - 27

Unit 4. Fluid Pressure 18 - 22

Unit 3. Fluid Containment 14 - 18

Unit 2. Heat and Temperature 9 - 13

Unit 1. Energy Pages

C O N T E N T

A Forms of energy 4 - 8

B Energy efficiency

A Changes of temperature and state

B Heat transfer

A Pipes, ducts and hoses

B Tanks

C Pumps, fans and turbines

A Gauge pressure and absolute pressure

B Hydrostatic pressure and siphonic action

A Fluid dynamics and aerodynamics

B Drag

C Laminar flow and turbulent flow

D Aerofoils

Exercise 1. Read the texts A, B, C and mark the sentences true (T) or false (F)

1. Energy only can be converted from one form to another.

2. Energy in the form of movement is a type of electrical energy.

3. Energy within substances that can produce a chemical reaction is called kinetic energy.

4. Everybody knows that energy in the form of noise is called sound energy.

5. The spring in a watch, which is wound up and then progressively unwinds, is a type of mechanical energy.

6. Useful energy is used for the purpose.

7. A type of energy, which will be dissipated into the air and not used is called waste energy.

8. The amount of energy needed to do a task – for example, lifting a load to a certain height by crane – is called efficiency.

9. The amount of energy converted in order to perform tasks – in other words, the amount of work done – is measured in amperes.

10.The speed, or rate, at which work is done is called power.

Дата добавления: 2014-10-15