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WorksheetsCosmology & The Big Bang
Total questions: 20
Worksheet time: 10mins
The term "isotropy" refers to the "_____" state of the universe.
uneven
sameness
distorted
lumpy
Homogeneity in the universe describes how matter in the universe is
created or destroyed.
evenly distributed over large-scales.
the same everywhere.
spread out but clumps together over large-scales.
Isotropy also means that the same physical ____ exist throughout the universe.
parameters
laws
events
stars
Homogeneous in astronomy means properties are the same at all ____.
locations
inflections
space & time.
stars.
Isotropic means the property is the same in all ____.
directions
parts of the solar system
locations
atoms.
The study of the origin and eventual fate of the universe is called _____.
astronomy
astrology
cosmology
vulcanology
The _____ principle implies that the universe has no center & no edge.
isotropic
Oblers'
homogeneous
cosmological
An example of isotropy in the universe are _____ galaxies - which are evenly distributed.
quasar
radio
Seyfert
spiral
_____ laws of gravity & motion first supported the idea of the cosmological constant.
Kepler's
Galileo's
Einstein's
Newton's
Olbers' Paradox states that if the universe was infinite & unchanging then
the Sun would not be needed.
there would be no darkness in the night sky.
the Earth would not have formed.
there would be no daylight.
The fact that the night sky is dark means that the universe is static and unchanging.
True
False
Olbers' Paradox is also called the "Dark Night Sky" paradox.
True
False
The universe began as a singular ultimately dense point in space-time that hyper-inflated.
True
False
Evidence for the Big Bang Theory includes ____.
galaxy redshifts
the formation of Earth.
cosmic microwave background radiation (CMB)
satellite discoveries.
Edwin Hubble discovered that all _____ are rushing away from each other (Hubble's Law).
galaxies
stars
planets
space-time
The more distant the galaxy is the faster it is moving - as described by _____.
Wien's Law
Stefan's Law
Hubble's Constant
Quantum Law
The detection of _____ provided direct evidence for a violent beginning to the universe.
radio galaxies
the Cosmic Microwave Background (CMB) radiation
Seyfert galaxies
the earliest stars
The amount of matter needed for an "open," "closed," or "flat" universe is known as _____.
critical density
the black hole paradox
critical mass
Olbers' paradox
Current research suggests that the universe will
eventually collapse back into the "big crunch."
remain static forever.
expand forever.
expand & then contract (over & over again).
Eventually dark energy expansion will take over and the universe may end
in a "big rip."
in a "big freeze."
in another big bang.
sometime fairly soon.
