GK
BIG BANG THEORY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Astronomers have detected leftover radiation from the Big Bang
|
|
|
Everything in the universe has remained in the same location for billions of years
|
|
|
Astronomers have discovered that the universe is no longer expanding
|
|
|
Astronomers have discovered evidence that the universe will soon begin contracting in a “Big Crunch”
|
Detailed explanation-1: -What evidence is there to support the Big Bang theory? Two major scientific discoveries provide strong support for the Big Bang theory: • Hubble’s discovery in the 1920s of a relationship between a galaxy’s distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.
Detailed explanation-2: -The cosmic microwave background (CMB) is leftover radiation from the Big Bang or the time when the universe began. As the theory goes, when the universe was born it underwent rapid inflation, expansion and cooling.
Detailed explanation-3: -Key observations supporting the big bang theory include: (1) expansion of the universe, (2) cosmic microwave background radiation, (3) abundances of the lightest chemical elements, and (4) age of the oldest-known stars.
Detailed explanation-4: -There are several main pieces of evidence that support the Big Bang theory. One is the fact that the universe is expanding, proven with something called red-shift. The second is something called cosmic microwave background radiation. The third is the abundance of different elements in the universe.
Detailed explanation-5: -Some pieces of evidence used to prove the big bang theory are moving galaxies, cosmic background, and the age of the universe.