Lesson 1.1 Flashcards
is cosmological model that explains how the
universe began
suggests that the universe started its expansion about 13.8
billion years ago
concept of big bang as not a literal explosion of something
leading to the creation of the universe,
but rather a sudden expansion
big bang theory
big bang theory suggests that the universe started its expansion about _
billion years ago
13.8
Big Bang Theory and the Bread-Raisin Model
The bread represents the
_; while raisins are
_.
universe, galaxies
Big Bang Theory and the Bread-Raisin Model
The bread represents the
universe; while raisins are
galaxies.
The galaxies, represented
by dots, are not _.
expanding
Distances in relation to other galaxies just increases because of the
_ universe.
expanding
an area predicted
to be in the core of a black hole
with very high temperature and
density
“singularity”
an area predicted
to be in the core of a black hole
with very high temperature and
density
The intense heat resulted to
formation of matter and antimatter
particles that were destroyed every
time they collided with each other
“singularity”
is the
formation of elements, such as
H and He
Nucleosynthesis
Presence of these elements led
to the formation of stars and
galaxies.
H and He
proton, neutron=deuterium
deuterium, neutron=tritium
tritium, proton=helium
expansion of the universe- is supported by the observation that
galaxies are receding from us.
high amount of light elements like H, He and Li- These elements were formed through the fusion of protons and neutrons immediately after the Big Bang
detection of the cosmic microwave background (CMB)
radiation- the residue or heat leftover from the Big Bang.
the residue or heat leftover from the Big Bang
cosmic microwave background (CMB)
radiation
Evidences that Support the Big Bang Theory
the observation that
galaxies are receding from us
high amount of light elements like H, He and Li.
cosmic microwave background (CMB)
radiation
Proponents of the Big Bang Theory
Georges Henri Joseph Edouard Lemaître
Edwin Powell Hubble
Arno Penzias
Robert Wilson
was the first proponent of
the big bang theory. He suggested the idea of
the expanding universe
Georges Henri Joseph Edouard Lemaître
who established
the =’s law which provided an
evidence that the universe was not static
but expanding.
Edwin Powell Hubble
which provided an
evidence that the universe was not static
but expanding
Hubble’s law
discovered that microwaves with
wavelengths of about 7
centimeters were present in space
These waves were referred to as
the cosmic microwave background
(CMB) radiation.
Arno Penzias and Robert Wilson
microwaves with
wavelengths of about 7
centimeters were present in space
cosmic microwave background
(CMB) radiation.
Drawbacks of the Big Bang Theory
failed to explain how the universe was created
only explains how it evolves and not where it originated
failed to explain how galaxies formed
states that the relationship of the velocities
of distant objects in the universe is directly proportional
to their distance from Earth.
Hubble’s law
