O’zbekiston respublikasi oliy va o’rta maxsus ta’lim vasirligi

Вариант №24
THE NATURE OF SOUND
All the time we hear sounds from all sides. "We hear sounds through our ears which are special receivers for sound just as our eyes are special receivers for light.
Where there is sound there is movement, i.e. all sounds are produced by something that vibrates.
Hearing is very complicated process in which the ears and the brain co-operate. The ears act as detectors, amplifiers and converters. They detect sounds by picking up vibrations in the air. They amplify the sound by changing small pressures into larger ones. Then they convert it into electrical signals being carried to the brain. The brain performs the job of interpreting the signal.
Being made at a distance from us the sound has to travel across that distance to our ears. It is the ear that is actually the carrier that brings the sound to our ears. Air is not the only medium that carry sound. Any gas, liquid or solid can serve as the material medium through which sound can pass.
But sounds being heard by our ears not the only ones that there exist. There are also sounds that we cannot hear. They are called ultrasonic sounds. Although we do not hear them we have learned how to make them and detect them. The study of sound has grown into two new areas — ultrasonics and supersonics. The prefix ultra means beyond. In ultrasonics it refers to the fact that we study and use sounds that have frequencies beyond those we can detect with our ears.
The prefix super means above. In supersonics it points to the fact which deals with speeds above the speed of sound.

1.Tеkstni uking va tarjima kiling.

2.Tеkstga savollar tuzing.
3.Shu savollarga javoblar bеring.
4.Shu tеkst asosida dialog tuzing.
5.Shu tеkstga moslab xikoya tuzing.
6.Ixtiyoriy 20 gapdan iborat bulgan uzbеkcha matnni ingliz tiliga
tarjima kiling.
7.Tеkstdagi xar bir gapning fе'l zamonlarini aniklang.
8.Tеkstdan modal fе'llar, kuchirma va uzlashtirma gaplar, payt va
shart ergash gaplarini aniklang va ular xakida kiskacha yozing.
9.Sеvimli taomlaringiz, bayramlar, kitoblar, filmlar xakida
bittasini tanlab yozing.
10.Uzbеkistonning bayrogi, gеrbi, Konstitutsiyasi, kadimiy
shaxarlari, sanoat kishlok xujaligi xakida xoxlagan bita tеmani
kiskacha yozing.