Formation of Stars Chronological Order
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Questions and Answers

The first stars did not appear until around how many years after the Big Bang? Answer: ______

100 million years

Where do the heavy elements that make up matter come from? Answer: Thermonuclear fusion process in _____

stars

True or False: Dark matter absorb light making it hard to detect. Answer: _____

False

What makes up most of our universe, Dark matter or ______ matter?

<p>visible</p> Signup and view all the answers

This is the minimum mass that a clump of gas must have to collapse under its gravity to form a star. Answer: Jeans _____

<p>mass</p> Signup and view all the answers

What are the key dynamical processes in ______ formation?

<p>star</p> Signup and view all the answers

True or False: Devised models of cosmologists theorized that the first stars could have evolved from density fluctuations before the Big Bang. Answer: _____

<p>False, we know nothing before the Big Bang</p> Signup and view all the answers

What do the first protogalaxies mostly consist of, dark matter or ______ matter?

<p>visible</p> Signup and view all the answers

What may have seeded the growth of supermassive black holes that formed in the hearts of galaxies in the universe? Answer: Collapse of some of the first _____.

<p>star</p> Signup and view all the answers

This is the cooled remnant of the first light that could ever travel freely throughout the universe. Answer: Cosmic Microwave ______

<p>Background</p> Signup and view all the answers

In response to the flaw of the classical interpretation of reality, modern science introduces ______, which is a concept that makes use of model or representations of objects to define physical properties and explain their interactions with other objects.

<p>Model-dependent realism</p> Signup and view all the answers

Arrange the following steps in the formation of stars in chronological order: a.Presence of small-scale density fluctuations in the primordial soup of the early universe c.Clumps gradually evolve into gravitationally bound structures, forming small systems d.Denser regions would take the form of a network of filaments and the finest starforming systems would coalesce at the nodes of the network b.Protogalaxies merge to form galaxies which would congregate into ______ clusters

<p>galaxy</p> Signup and view all the answers

Before recombination, Thomson scattering between the photons and electrons and coulomb interactions between the electrons and baryons were sufficiently rapid that all particles behave as a single tightly coupled ______.

<p>fluid</p> Signup and view all the answers

This theory explains how the universe began with an infinitely hot and dense single point that inflated to form the ever-expanding universe. Answer: Big Bang ______.

<p>Theory</p> Signup and view all the answers

What elements do the first protogalaxies significantly contain? Answer: ______ and Helium.

<p>Hydrogen</p> Signup and view all the answers

What is regarded as the God ______?

<p>particle</p> Signup and view all the answers

What is the most important contribution of Hubble's paper on our understanding of the universe? Answer: That we live in a large, dynamically evolving universe that is expanding in all ______.

<p>directions</p> Signup and view all the answers

What is the difference between Einstein's Theory of General ______ and Theory of Special Relativity?

<p>Relativity</p> Signup and view all the answers

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