lesson 1.2 Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

As opposed to the big bang theory, Steady-State Theory states that the universe _____.

A

has no
beginning and no end.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The steady-state theory suggests that the universe _____-.

A

has always been here and will
always be present.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

t also suggests that _______ but it
continuously expands while simultaneously creating matter.

A

the universe always looks the same in any time or space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

During expansion, the density of the universe remains _____; hence, the name
steady state.

A

constant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

It also explains that the rate of the death of stars is _____ to the rate of birth of
stars.

A

equal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Both the big bang and steady-state theories explain that the universe is
______.

A

expanding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Proponent of Steady State

A
  1. Hermann Bondi, Thomas Gold, and Fred Hoyle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The steady-state idea of ____ may have started when they watched a
movie together in the late ___.

A

Bondi and Gold 1940s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

It was a horror movie entitled ___which started and ended in the
same way.

A

“Dead of Night”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The _____ of the movie inspired them to suggest that the universe was dynamic but unchanging.

A

circular plot

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Drawbacks of Steady State

A
  1. Not parallel with the law of conservation of energy and mass
  2. The discovery of the cosmic microwave background radiation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The steady-state theory explained that cosmic radiation is a result of a ______.

A

supernova

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The oscillating universe theory discusses that the universe is

A

expanding and will
contract once all the energy after the big bang has been used up, only to expand
again once it approaches the point of singularity (i.e., the beginning of a new
universe).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

● It is also referred to as the pulsating theory.

A

The Oscillating Universe Theory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The oscillating universe theory can be described as the combination of the ____

A

big bang and the big crunch.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

● The ___ occurs when the universe expand, reverses, collapse, causing the formation of a singularity or the occurrence of another big
bang.

A

big crunch

17
Q

_______ suggests that once the universe reverses and attains
the point of singularity, another universe will be born.

A

The oscillating universe theory

18
Q

once the universe reverses and attains
the point of singularity, another universe will be born.

A

big bounce.

19
Q

theorized that the universe may be the first in the cycle, or it could be a
result of a previous big bounce event.

A

Richard Tolman

20
Q

Proponent of Oscillating Universe Theory

A
  1. Richard Tolman
21
Q

● entropy

A
  1. Richard Tolman
22
Q

Drawback of Oscillating Universe Theory

A

This theory suggests that the universe would collapse on its own after it reaches
its full expansion, which would violate some current laws of physics.