18 Questions
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?
visible
This is the minimum mass that a clump of gas must have to collapse under its gravity to form a star. Answer: Jeans _____
mass
What are the key dynamical processes in ______ formation?
star
True or False: Devised models of cosmologists theorized that the first stars could have evolved from density fluctuations before the Big Bang. Answer: _____
False, we know nothing before the Big Bang
What do the first protogalaxies mostly consist of, dark matter or ______ matter?
visible
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 _____.
star
This is the cooled remnant of the first light that could ever travel freely throughout the universe. Answer: Cosmic Microwave ______
Background
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.
Model-dependent realism
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
galaxy
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 ______.
fluid
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 ______.
Theory
What elements do the first protogalaxies significantly contain? Answer: ______ and Helium.
Hydrogen
What is regarded as the God ______?
particle
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 ______.
directions
What is the difference between Einstein's Theory of General ______ and Theory of Special Relativity?
Relativity
Test your knowledge on the chronological order of the formation of stars. Arrange the steps correctly from small-scale density fluctuations in the early universe to the merging of protogalaxies. Select the correct order to complete the quiz.
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