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Question 1
A) Which sentence about galaxies provides evidence of universe expansion that supports the Big Bang Theory?(1 point)

Galaxies are moving away from each other.


Galaxies are in constant motion.


Galaxies are moving at different speeds and in different directions.


Galaxies are moving more slowly than they have in the past.


Question 2
A) Which provides evidence of universe expansion that supports the Big Bang Theory? Select the three correct answers.(2 points)

The temperature of the universe is increasing.


An enormous amount of weak background radiation has been detected in the universe.


The temperature of Cosmic Microwave Background radiation varies widely from one part of the universe to another.


Galaxies are moving away from each other.


The temperature of the universe is decreasing.


The universe is undergoing a cycle of contraction and expansion.


Question 3
A) Which is evidence of universe expansion that supports the Big Bang Theory?(1 point)

The temperature of the universe has cooled and warmed repeatedly over time.


The temperature of the universe has warmed over time.


The temperature of the universe is the same as it was at the time of the Big Bang.


The temperature of the universe has cooled over time.

Sagot :

The characteristics of the Big Bang allow you to find the correct answers for the different questions are:

1.  The galaxies are moving away from each other.

2.  There is a large amount of weak background radiation in the universe

  • The galaxies are moving away from each other
  • The temperature of the universe is decreasing

3. The temperature of the universe has cooled over time

The Big Bang model says that initially the universe was born from a great initial explosion about 14 10⁹ years ago, with this idea several facts arise:

  • The galaxies after their formation must be in a constant expansion
  • There must be an energy in the entire universe remaining from the big explosion
  • As the energy is constant, the energy per unit volume must decrease, consequently the temperature of the universe must be decreasing.

Let's apply these ideas to the different questions, to find the correct answers.

1) What phrase about galaxies provides evidence of the expansion of the universe proposed by the Big Bang

the correct answer is:

  • The galaxies are moving away from each other.

As there is no friction, the initial forces create a speed in the galaxies, therefore they must move away from each other at this speed

2) What phrases give evidence of the expansion of the universe

the correct answer is:

  • There is a large amount of weak background radiation in the universe
  • The galaxies are moving away from each other
  • The temperature of the universe is decreasing

3) What evidence of expansion

  •   The temperature of the universe has cooled over time

In conclusion with the characteristics of the Big Bang we can find the correct answers for the different questions are:

    1.  The galaxies are moving away from each other.

    2.  There is a large amount of weak background radiation in the universe

  • The galaxies are moving away from each other
  • The temperature of the universe is decreasing

   3. The temperature of the universe has cooled over time

Learn more here: brainly.com/question/954190

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