2. What does it mean “Explosion” ? Author: Perov N., 11b form, School № 5

3. explosion In technology In society In emotions In organism In nature In the Universe

4. Hypotheses: Explosion is the necessary part of the evolution Explosion is not only the final result of the process Explosion is the beginning of the new way

5. The Big Bang Theory Astronomers believe that the expanding universe is the result of an enormous and powerful explosion called the Big Bang Some 15 to 20 billion years ago, an explosion shot the concentrated matter and energy in all directions.

7. Scientists have discovered that the background radiation is almost the same throughout the entire universe. This constant background radiation is one observation that supports the Big Bang theory.

8. After the initial Big Bang, the force of gravity began to pull matter into clumps. At some time, the clumps formed huge clusters of matter, which became the galaxies of the universe.

9. Conclusions: The Big Bang was the result of the interaction of different forces (pressure and heating) That explosion destroyed the place of density It was the beginning of the new process of the universe forming.

10. References: http://www.nasa.gov Maton, et al: Prentice Hall Science: Exploring the Universe, Englewood Cliffs, NJ;1994 Used by permission of the Publisher Readers Digest for children “Atlas of the universe”