Task 4. Summary Questions

Task 2. Match the words with the definitions.

Task 1. Decide if these statements are true or false.

1. If a source of waves is moving away, the wavelength appears shorter.

2. The only thing that exists outside the Universe is empty space.

3. The further away the galaxy, the slower it is moving away.

4. It is believed that the galaxies composing the Universe used to be much closer together than they are now.

5. Cosmic microwave background radiation didn’t prove the Big Bang theory.

to account for (something)	the rate or speed at which an object is moving away, typically from Earth
to expand	to the same degree
a pattern	clear to understanding, open to view
recessional velocity	to give reasons for, to explain
current	to make or become greater in extent, volume, size, or scope; increase
equally	a star that explodes catastrophically due to instabilities of its nuclear fuel or gravitational collapse
apparent	a form or model proposed for imitation
supernova (pl - ae)	most recent; up-to-date

Task 3. Complete the sentences using correct forms of the following words:

to account for (something), to expand, pattern, recessional velocity, current, equally, apparent, supernovae.

1. What is your opinion of the ___________ state of modern art, in this country and internationally?

2. _________ is measured by distance from the Earth multiplied by the Hubble constant.

3. A great proportion of primary cosmic rays comes from _______________.

4. From the beginning, it was __________ that she was not an ordinary child.

5. Both features allow you to specify a ________ that controls the form of data.

6. It is ________ important to install these updates, especially for web applications.

7. The liquid __________ and contracts with changes in temperature.

8. How do you ___________ the fact that the amount of particles is still rising?

1. What is a red-shift?

2. What relationship exists between the speed of the galaxies moving apart and their initial distance from one another? Name this Law.

3. What is harder for the astronomer to measure: a galaxy's redshift (indicating recessional velocity) or its distance from Earth?

4. How long ago was the Big Bang?

5. What did the Big Bang Theory predict that scientists started to search for?

6. Why is it believed that we live in an expanding Universe?

Listening 2

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