Big Bang Theory Lesson 1.1

The Big Bang Theory suggests that the universe began its expansion approximately 13.8 billion years ago.

It refers to an area of extremely high temperature and density predicted to exist at the core of a black hole.

In the bread-raisin model, the bread represents the universe and the raisins represent galaxies that are not expanding themselves.

<p>Nucleosynthesis is the formation of elements such as hydrogen (H) and helium (He), which led to the creation of stars and galaxies.</p> Signup and view all the answers

<p>The Big Bang Theory explains that as the universe expands, matter becomes diluted in the increasing volume of space.</p> Signup and view all the answers

<p>The observation that galaxies are receding from us supports that the universe is expanding.</p> Signup and view all the answers

<p>The Big Bang is often misunderstood as a literal explosion that created the universe.</p> Signup and view all the answers

<p>The high amounts of light elements like H, He, and Li were formed through fusion and played a key role in the formation of stars and galaxies.</p> Signup and view all the answers

<p>Scientists and philosophers have developed various hypotheses and theories, including the Big Bang Theory, to explain the universe's origins.</p> Signup and view all the answers

<p>Georges Lemaître was the first proponent of the Big Bang Theory, suggesting the expanding universe concept.</p> Signup and view all the answers

<p>According to the Big Bang Theory, distances between galaxies increase due to the ongoing expansion of the universe.</p> Signup and view all the answers

<p>The Big Bang Theory is significant as it provides a foundational explanation for the formation and evolution of the universe.</p> Signup and view all the answers

<p>They discovered microwaves with wavelengths of about 7 centimeters present in space, which supported the Big Bang Theory.</p> Signup and view all the answers

<p>Scientific inquiry plays a vital role in formulating theories as it involves observation, experimentation, and critical analysis to derive conclusions.</p> Signup and view all the answers

<p>The CMB radiation is the residual heat from the Big Bang, providing key evidence for the theory.</p> Signup and view all the answers

<p>Edwin Hubble established Hubble's law, which provides evidence that the universe is not static but expanding by showing the relationship between distance and recession velocity of galaxies.</p> Signup and view all the answers

<p>CMB radiation is the afterglow of the Big Bang, first referred to by Arno Penzias and Robert Wilson.</p> Signup and view all the answers

<p>It fails to explain how the universe was created, focusing instead on its evolution.</p> Signup and view all the answers

<p>Georges Henri Joseph Edouard Lemaître proposed the idea of the universe originating from the 'cosmic egg'.</p> Signup and view all the answers

<p>Hubble's law states that the velocity of distant objects is directly proportional to their distance from Earth.</p> Signup and view all the answers

<p>One possible fate is the 'Big Freeze', where the universe continues to expand and cool, leading to a state of low energy and inactivity.</p> Signup and view all the answers

<p>There is a significant possibility of finding Earth-like planets, as many exoplanets have been discovered in habitable zones.</p> Signup and view all the answers

<p>Redshift refers to the phenomenon where light from galaxies shifts to longer wavelengths as they move away from us.</p> Signup and view all the answers

<p>The Big Bang theory suggests that the universe started from a singularity with extremely high mass and density, which expanded, affecting the volume over time.</p> Signup and view all the answers

<p>It does not align with the law of conservation of energy and mass.</p> Signup and view all the answers

<p>The discovery of cosmic microwave background (CMB) radiation.</p> Signup and view all the answers

<p>The universe expands and then contracts, leading to cycles of big bangs and big crunches.</p> Signup and view all the answers

<p>I believe the universe is created from a process that continuously generates new matter as it expands.</p> Signup and view all the answers

<p>The universe is approximately 13.8 billion years old.</p> Signup and view all the answers

<p>Richard Tolman proposed the theory and called it the 'big bounce.'</p> Signup and view all the answers

<p>The universe expands until it reverses and collapses into a singularity.</p> Signup and view all the answers

<p>The Big Bang Theory states that the universe began from an extremely hot and dense point and has been expanding ever since.</p> Signup and view all the answers

<p>It suggests that the universe would not collapse on its own after reaching full expansion.</p> Signup and view all the answers

<p>Singularity refers to a point in time where density becomes infinite, which is thought to have occurred at the beginning of the universe.</p> Signup and view all the answers

<p>The theory posits that a new universe is born through a big bang after the big crunch.</p> Signup and view all the answers

<p>Evidences include cosmic microwave background radiation, the abundance of light elements, and the redshift of galaxies.</p> Signup and view all the answers

<p>The steady-state theory posits that the universe is continuously expanding while new matter is constantly being created, maintaining its average density.</p> Signup and view all the answers

<p>Cosmic radiation is proven to be uniform in all directions of the universe.</p> Signup and view all the answers

<p>The steady-state theory was proposed by Hermann Bondi, Thomas Gold, and Fred Hoyle in 1948.</p> Signup and view all the answers

<p>In the steady-state theory, as the universe expands, new matter is created to keep the average density constant despite increasing volume.</p> Signup and view all the answers