Quiz 05/14/13

1. Will the universe continue expanding forever? No
2. Is the expansion of the universe accelerating? Yes
3. What discovery received the Physics Noble Prize in 2011? The published observations of Type 1a Supernovae by the High-z Supernova Search Team followed in 1999 by the Supernova Cosmology Project suggested the expansion of the universe is accelerating.
4. Name the three scientists that received the prize? Perlmutter, Schmidt, and Reiss
5. Which standard candles were used to measure the acceleration of the universe? Standard candles
6. What are  the fractions of baryonic matter, dark matter, and dark energy? 71.3% of dark energy and 27.4% of a combination of dark matter and baryonic matter.
7. Describe Figure 16.16 of the textbook. Data from white dwarf supernovae are shown along with four possible models for the expansion of the universe. Each curve shows how the average distance between galaxies changes with time for a particuular model.
8. Which model fits best? The supernova data firs the accelerating universe better than the other models.
9. According to this model, which is the age of the universe? 14 billion years
10. Is there something opposing gravitational attraction in the universe as a whole? Dark matter