1.2QA-Review

1.2 QA Review

1- The Big Bang Theory describes the creation of our space time bubble (Universe): a- true b- false

2- It is thought that the early universe was composed mainly of hydrogen: a- true b- false

3- Hubble's law observes that galaxies are mostly: a- moving towards each other b- moving away from each other

4- Radiation wavelengths of hydrogen in galaxies when observed from earth are: a- red shifted b- blue shifted c- non of the above

5- Cosmic background radiation is thought to be the cooled aftermath of the big bang: a- true b- false

6- The current known matter describes all of the observed phenomenon in the universe: a- true b- false

7- It is observed the the further out we look, as a rule, galaxies: a- are moving away slower b- are moving away faster

8- Dark energy is postulated to explain: a- the acceleration of farther out galaxies b- the slow down of farther out galaxies

9- To explain the consistent spin rate of arms and the core of spiral galaxies ______ is postulated: a- dark energy b- dark matter

10- Proto-galaxies are thought to be composed of mainly hydrogen: a- true b- false

11- Galaxies are classified as elliptical, lenticular, elliptical and irregular: a- true b- false

1-a, 2-a, 3-b, 4-b, 5-a, 6-b, 7-b, 8-a, 9- b, 10-a, 11-a