Observations of Type la supernovae in distant galaxies have shown that a. the st
ID: 2076696 • Letter: O
Question
Observations of Type la supernovae in distant galaxies have shown that a. the star formation rate in galaxies decreases with increasing redshift. b. the expansion rate of the universe is increasing. c. the cosmological constant is zero. d. dark energy is negligible at the present time. e. there were more stars in the past than at the present time. What has had the largest effect on the change in the expansion rate of the present-day universe? a. dark matter b. luminous matter c. dark energy d. radiation pressure e. gravity In a universe undergoing an accelerated expansion rate, the actual age of the universe is _____ the Hubble time. a. older than b. younger than c. negligible compared with d. the same as e. independent of The universe can be infinite in size for which shapes of the universe? a. open b. closed c. flat d. closed and flat e. open and flat What can simultaneously solve both the flatness and horizon problems in cosmology? a. GUT b. quantum mechanics c. TOE d. inflation e. dark energy Which of the following is a false statement about inflation? a. Inflation occurred when the universe wasExplanation / Answer
7- option a)the star formation rate in galaxies decreses with increase in redshift.
8- option e) gravity
9- option b) younger
10-option b) closed
11-option d)inflation
12- option d) iflation is currently driving the expansion of universe
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