Thunder because light goes faster than sound. We see the lightning

As it happens, but the sound of the thunder may take some seconds

To reach us, depending on how far away the lightning was. The sound

Of thunder is an echo from the sound waves bouncing off Earth or

Off the clouds.

A cloud contains.

A millions of water droplets

B electricity, thunder and rain

C electrical charges that become lightning

Electricity is generated when.

A clouds collide, releasing water droplets

B droplets divide

C high winds blow the clouds rapidly up into higher air

3. The ≪crack≫ of thunder is really.

A clouds colliding above the Earth

B suddenly cooling air

C the result of the lightning sparking the water droplets

Which of these statements is true?

A We see lightning as it happens.

B We hear thunder and see lightning together.

C We hear thunder before we see lightning.

The article says that.

A lightning is more dangerous than thunder

B the rumbling sound of thunder is made by the collision of clouds

C sound waves bouncing off Earth make the noise we call ≪thunder≫

Which of these statements is true?

A Light travels faster than sound.

B Sound travels faster than light.

C Light and sound travel at equal speeds.

Www.e-ranok.com.ua

Variant 3

A good title for this story would be.

A Don’t be Afraid of Lightning

B Preventing Storms

C The Science of Thunder and Lightning

Which of these statements about electricity is true?

A Electricity causes both lightning and thunder.

B Thunder gets rid of extra electricity in the air.

C Electricity in the air is generated from winds blowing upward.

2 Complete the text with the words from the table.

The Truth about Technology’s Greatest Myth

The American sociologist Harvey Sacks addressed one of the central

Failures of technocratic dreams. We have always hoped, Sacks argued,

that ≪if only we introduced some fantastic new (1) machine the

world will be transformed.≫ Instead, even our best and brightest devices

Must be accommodated within existing practices.

As an (2), Sacks considered the telephone. Introduced into American

(3) momentary conversation across hundreds or even thousands

of miles seemed close to a miracle. For Scientific American, editorializing

in 1880, this heralded ≪nothing less than a new (4) of society…≫

The most serious early (5) around the telephone, for example,

Concerned not social (6), but decency and deception. Was it disgraceful

To chat while improperly dressed? Such were the (7) concerns

Of 19th-century telephonics, matched by (8) companies’

Attempts to assure subscribers of their propriety.

The best aim for any (9) about technology is to treat novelty

As not as an (10), but as an opportunity to re-examine ourselves.

(Source: http://www.bbc.com)

A B C D

Communication talking speaking transformation

Rule guide example pattern

Cells homes flat house

Organization organ organizing organized

Fights discussion arguments debates

Revolution resolution solution moment

Yearly daily monthly weekly

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