George Brown College Canada

GSCI 1009

Quiz 1

1)What do astronomers mean by the Big Bang?

2. Suppose we look at two distant galaxies: Galaxy 1 is twice as far away as Galaxy In that case

                      ,

3. If we imagine the history of the universe compressed into one year, with the present as the stroke of midnight at the very end of that year, dinosaurs became extinct                                         .
4. What do we mean when we say that the universe is expanding?
5. The fact that nearly all galaxies are moving away from us, with more distant ones moving faster, helped us to conclude that:
6. If we represent the solar system on a scale that allows us to walk from the Sun to Pluto in a few minutes, then
7. Could we see a galaxy that is 20 billion light-years away?
8. Which statement below explains best the idea that The farther away we look in distance, the further back we look in time."
9. Which of the following correctly lists our "cosmic address" from small to large?
10. The star Betelgeuse is about 600 light-years away. If it explodes tonight,
11. In what sense are we "star stuff "
12. What key observations lead us to conclude that the universe is expanding?