Transcript PASS Content Standard 5.1

PASS Content Standard 5.1
The stars differ from each other in size,
temperature, and age, but they appear
to be made up of the same elements
that are found on the earth.
According to the Big Bang
Theory the universe began
with the explosion of a
singularity, a point
with an infinite
amount of mass.
The universal abundance of
the chemical elements is one
of five fundamental pieces
of evidence supporting the
cosmological
model of the
Big Bang Theory.
By comparing light from
stars, scientists estimate
that the universe is nearly
75% hydrogen
and nearly
25% helium.
Light produced by each
type of atom has a
characteristic spectrum.
Only 1% to 2% of the
universe is made up
of all the other
elements together.
While many of the lighter
elements are made by
nuclear fusion
in the cores
of stars...
it takes the unstable
conditions of a supernova
explosion to form
elements heavier
then iron.
The universe has been
expanding and cooling
since the Big Bang.
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Big Bang - 3 min
Cosmology is the study
of the universe as a whole.
Pre-Geometry,
Quantum Physics
begins to work
Space, time, gravity
and boson forces
Hadrons, electrons, neutrinos
and electromagnetic force
Light nuclei (helium, etc.)
and plasma
Supernovas, heavy atoms,
galaxies, stars, and free protons
Second generation stars,
planets, molecules, and life
This picture
was taken
with the
Hubble Space
Telescope.
There is only
one star in
the picture,
all the others
are galaxies.
If a dime were
held 75 feet in
front of your
eyes, it would
cover the area
of the sky in
this picture.
The
universe
includes
all the stars,
galaxies, and
material
between
them.
11
Our Sun is one of about 1 X 10
(100 Billion) stars located in the
rotating, spiral-shaped galaxy
we call the Milky Way.
The Sun is located about
two thirds of the way out on
one of the galaxy arms, about
30,000 light years from the center.
As the galaxy rotates, the Sun
completes a circuit of the galaxy
about every 240 million years.
Astronomy
is the study
of objects in
the universe
outside the
Earth's
atmosphere.
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Land-based telescopes - 9 min
Patterns of stars as seen
from the Earth are called
constellations.
The International Astronomical
Union officially recognizes
88 constellations.
For today's astronomers,
constellations refer to precisely
defined areas of the sky.
Orion
(The Hunter)
Ursa Major
(The Great Bear)
Cygnus
(The Swan)
Cassiopeia
The queen of
Ethiopia and
mother of
Andromeda
Leo
(The Lion)
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#7 The Sun - 4 min
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#13 Inner Planets - 13 min
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#14 Outer Planets - 9 min
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Comets & Meteors - 5 min