Tasks 1. Read the text and answer the questions, Sport in our life
All over the world people of different ages are very fond of sport. Firstly, sport helps people
to become strong and to develop physically. Secondly. It makes them more organized in their
daily activities. Also sport keeps your mind healthy, Sport helps people to keep in good health.
We all need to exercise. Kegular exercises give you more eners. Exercises make you feel and
ook better. The best exercises are: walkmg jogging or swimming: Among the sports popular in
ur country are football, basketball, swimming, volley-ball. ice hockey. ternts. Eymnastics, and
gure skating. As for me, I like tennis, swimming, basketball, football, and valley-ball. But my
avorite sport is football. By the way football is a team kind of sport. It is a sport played between
yo teams of eleven players with a ball. The object of the game is to score by driving the ball
to the opposing goal 1 like this game because it is beautiful. Interesting and really fast. Perhaps
ar's why football is so popularnowadays
1. Why do people need to exercise?
2. How do people look if they go in for sport?
3. What sports are popular?
1. Is football a team kind of sport?
5. How many players are here?
6. What is the object of the game?​

Отметим на бумаге черточкой положение указателя при нерастянутой пружине. Эта отметка будет нулевым делением.2. Подвесим к крючку динамометра груз массой 102г. На груз т 3D 102г действует Fтяж %3D 1Н. С такой же силой груз растягивает пружину динамометра. Эта сила уравновешивается силой упругости, возникающей в пружине при ее растяжении (деформации).Затем самостоятельно подвешивайте к динамометру второй, третий грузы той же массы. Отмечая черточкой положение указателя.Госле того как вы отметили положения указателя динамометра, нарисуйте проградуированную шкалу в тетрадь. С линейки получите шкалу с ценой деления 0,1 Н (стр.15 тетради).Выполнить задания 6,7 в тетради. Измерить проградуированным динамометром вес каких-либо тел и определить их массу. Закрепление изученного материала Как называется прибор для измерения силы? Как определяется цена деления прибора? Как сделать динамометр, которым можно измерить малье силы? Чему научились в ходе выполнения лабораторной работы?

1 The internal combustion engine is called so because fuel is burned

directly inside the engine itself

2 To describe the complete cycle, let's that the piston is

the top of the stroke (top dead center) and the and the exhaust

valves are closed, When the piston

moves down the inlet valve opens to

intake a charge of fuel into the cylinder. This is called the inlet (intake)

stroke. 

3 On reaching the lowest position (bottom dead center) the pis-

der,

begins move upward the closed upper part the cylinder,

the valve is closed and the mixture is compressed by the rising

piston. This is called the compression stroke.

4 Asthe piston again

the top dead center the spark plugs ignite the mixture, hoth valves he

ing closed during its combustion. As a result of burning mixtures the

gases expand and great pressure makes the piston move back down the

cylinder. This stroke is called the

reaches

powerstroke

5  When the piston reach

the bottom of its stroke, the exhaust valve is opened, pressure is re-

lensed, and the piston again rises. It lets the burnt gas flow through the

exhaust valve into the atmosphere. This is called thexhaust stroke

which completes the cycle

6  So the piston moves in the cylinder down

(intakestroke), up (compression stroke), down (powerstroke), up (ex-

hanst stroke)

1 a

2 a

3 b

4 a

5 b

6 a

Объяснение: