Which of the following does not support the expansion of the Universe?

Critical density is equal to density of the universe

The critical density is

the density corresponding to a marginally bound universe

laws of physics on earth apply to universe

The cosmological principle states the following:

There is no center to the universe

Same amount of material in all directions

the study of the structure and evolution of the universe

when the radiation in the universe was > matter.

Looks the same in all directions

Which of the following refers to marginally bound universe?

expands, slows down and stops at infinity

Inflation is a period of time

a rapid expansion in the universe.

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Questions 22

Answers

1
Which of the following does not support the expansion of the Universe?
Universe has no center or edge
Critical density is equal to density of the universe
Red shifts are not Doppler shifts
red shifts of galaxies are proportional to their distances
2
The critical density is
the density corresponding to a marginally bound universe
none of the above
the density corresponding to an unbound universe
the density corresponding to a bound universe
3
Universality means
Same about of material in all directions
Study of structure and evolution of universe
Looks the same in all directions
laws of physics on earth apply to universe
4
Which of the following is a description of positively curved space?
flat sheet
saddle or Pringles chip
shaped like a sphere
none of the above
5
The cosmological principle states the following:
There is an edge to the universe
There is no center to the universe
The big bang happened in one location
The universe has a cosmological blueshift
6
Heavy and light particles all in thermal equilibrium occurs in the
GUT Epoch
Hadron Epoch
Atomic Epoch
Lepton Epoch
7
Which of the following was considered a problem with the Universe evolution theories?
decoupling problem
horizon problem
inflation problem
straightness problem
8
Homogeneous means:
laws of physics on earth apply to universe
Same amount of material in all directions
Study of structure and evolution of universe
Looks the same in all directions
9
Recessional velocity = Ho * distance from us is called
Einstein's theory of relativity
Hubble Law
the Newton Equation
Kepler's law of planetary motion
10
The value for the cosmic background radiation is
0.3K
7.1K
4.2K
2.7K
11
The Matter Era consists of the following:
Atomic, Galactic, Stellar, Nuclear
Atomic, Galactic, Stellar
Atomic, Stellar, Nuclear
Galactic, Stellar, Nuclear
12
Which of the following Epochs was when unknown physics took place?
Stellar
Nuclear
Lepton
Plank
13
Cosmology is
the study of structure and evolution of the milky way
the study of the structure and evolution of the universe
the study of Olber's paradox
the study of the structure and evolution of cosmetics
14
The universe is believed to be
all of the above
homogeneous
expanding
isotropic
15
Radiation Era is
when all the radiation in the universe was created.
when the radiation in the universe was
when galaxies were created.
when the radiation in the universe was > matter.
16
Isotropic means:
laws of physics on earth apply to universe
Same about of material in all directions
Looks the same in all directions
Study of structure and evolution of universe
17
Which did not develope an explanation of cosmic background radiation?
George Gamow
Ralph Alpher
Carl Sagan
Robert Herman
18
The most acceptable theory of the birth of the Universe is:
The big bang theory
Einstein's theory of gravity
The oscillating big bang theory
The theory of critical density
19
Which of the following refers to marginally bound universe?
expands, slows down, stops and collapses
expands forever while increasing speed of expansion
none of the above
expands, slows down and stops at infinity
20
Inflation is a period of time
when we blow up balloons with the coins on them.
when we pay a lot more money
when radiation decoupled from the matter.
a rapid expansion in the universe.
21
In which Epoch does the temperature drop to 10K?
Nuclear
Galactic
Stellar
Inflation
22
The Hadron epoch took place between
10^-43s – 10^-35s
10^-32s – 10^-4s
10^-35s – 10^-32s
0s – 10^-43s

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