Which provides evidence of universe expansion that supports the Big Bang Theory? Select the three correct answers.
(2 points)
• An enormous amount of weak cosmic background radiation has been detected in the universe.
• The temperature of the universe is decreasing.
The temperature of the universe is increasing
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 universe is undergoing a cycle of contraction and expansion.
The three correct answers are:
1) An enormous amount of weak cosmic background radiation has been detected in the universe.
2) Galaxies are moving away from each other.
3) The temperature of Cosmic Microwave Background radiation varies widely from one part of the universe to another.
The three correct answers that provide evidence of universe expansion that supports the Big Bang Theory are:
1. An enormous amount of weak cosmic background radiation has been detected in the universe.
2. Galaxies are moving away from each other.
3. The temperature of Cosmic Microwave Background radiation varies widely from one part of the universe to another.
To determine the correct answers that provide evidence of universe expansion that supports the Big Bang Theory, we can analyze each option and eliminate the incorrect ones.
1. An enormous amount of weak cosmic background radiation has been detected in the universe - This is one of the key pieces of evidence that supports the Big Bang Theory. This radiation, known as the Cosmic Microwave Background (CMB) radiation, is found in all directions in the universe and is considered a remnant of the early stages of the universe. When the Big Bang occurred, the universe rapidly expanded and cooled down, leaving behind this background radiation. So, this is a correct answer.
2. The temperature of the universe is decreasing - This is also correct. According to the Big Bang Theory, as the universe expands, it cools down. Therefore, the temperature of the universe is expected to decrease.
3. The temperature of the universe is increasing - This is incorrect. The Big Bang Theory states that the universe cools down as it expands, so the temperature is expected to decrease.
4. The temperature of Cosmic Microwave Background radiation varies widely from one part of the universe to another - This is incorrect. The CMB radiation is isotropic, meaning it has the same temperature in all directions. It does not vary significantly from one part of the universe to another.
5. Galaxies are moving away from each other - This is correct. Observations show that galaxies are receding from one another in all directions, indicating an expanding universe. This is known as Hubble's Law and supports the idea of a Big Bang.
6. The universe is undergoing a cycle of contraction and expansion - This is incorrect. The Big Bang Theory describes a single event of rapid expansion and does not involve a recurring cycle of contraction and expansion.
In summary, the three correct answers that provide evidence of universe expansion supporting the Big Bang Theory are:
- An enormous amount of weak cosmic background radiation has been detected in the universe.
- The temperature of the universe is decreasing.
- Galaxies are moving away from each other.