The Big Bang Theory
Trending Questions
Q. Explain Big Bang theory.
Q. What does the Big Bang Theory say?
- All of the matter in the Universe exploded from a tiny, dense point
- Two galaxies collided causing a big bang
- The universe was created in its current location
- The universe is collapsing and getting smaller.
Q.
How were the galaxies formed? Discuss in 100 words.
Q. Why is the Big Bang Theory the most accepted theory for how the universe was formed?
- It is the most simple explanation for the evidence we have
- Religion says its the best theory
- Science has proven it beyond doubt
- A small group of scientists said it was the best opinion
Q. The astronomers have estimated that the universe was formed about _____ billion years ago.
Q. According to scientists, the gigantic explosion by which the universe came into existence is called :
- Universal theory
- Solar system theory
- Milky way theory
- Big bang theory
Q. Hubble’s law can be stated in vector form. Outside the local group of galaxies, all objects are moving away from us with velocities proportional to their positions relative to us. In this form, it sounds as if our location in the Universe is specially privileged. Prove that Hubble’s law is equally true for an observer
elsewhere in the Universe. Proceed as follows. Assume we are at the origin of coordinates, one galaxy cluster is at location and has velocity relative to us, and another galaxy cluster has position vector and velocity Suppose the speeds are nonrelativistic. Consider the frame of reference of an
observer in the first of these galaxy clusters.
elsewhere in the Universe. Proceed as follows. Assume we are at the origin of coordinates, one galaxy cluster is at location and has velocity relative to us, and another galaxy cluster has position vector and velocity Suppose the speeds are nonrelativistic. Consider the frame of reference of an
observer in the first of these galaxy clusters.
(a) Show that our velocity relative to her, together with the position vector of our galaxy cluster from hers, satisfies Hubble’s law.
(b) Show that the position and velocity of cluster 2 relative to cluster 1 satisfy Hubble’s law.
Q. The visible section of the Universe is a sphere centered on the bridge of your nose, with radius 13.7 billion light-years.
(a) Explain why the visible Universe is getting larger, with its radius increasing by one lightyear in every year.
(b) Find the rate at which the volume of the visible section of the Universe is increasing.
Q. Which of the following theories is the most satisfactory about the origin of the universe?
- Big bang theory
- None of these
- Steady state theory
- Pulsating theory
