Download UNDERSTANDING THE UNIVERSE

“UNDERSTANDING THE UNIVERSE”:
Name ____________Period___
1. Specifically describe Earth’s location in the Universe.
1. 93 billion miles from Sun
a. 3rd planet from Sun
b Orbiting sun in the solar system
c. Milkyway Galaxy
d. A spiral galaxy among many in the
universe
2. How do we know what we know about our Universe?
a. ancient people observed the sky with monuments/sunrise/sunset
b. Aristotle geocentric solar system, created a model to fit his interpretation.
c. Copernicus Heliocentric Solar System.
d. Galileo perfected the telescope, proved the universe is not perfect: Jupiter’s Moons
Saturn’s Rings
Phases of Venus
Moon’s mtns and craters
Milkyway Galaxy
e. New inventions Radio telescopes measure X-rays, Particle Accelerators, Laser, Mazers,
Machos and Whimps, new ideas: String Theory
f. Cepheid variables Brightness is used as distance markers
g. Red shift Galaxies are all moving AWAY from each other.
h. Hubble Telescope named after Edwin Hubble who observed the Red Shift of Galaxies.
The telescope was placed in space because our atmosphere distorts the view.
3. What method do scientists use to determine the age
of the universe?
3. Time = Distance/Speed
Distance: Cephieds
Speed: Red Shift
Cephieds/RedShift
4. What does the red shift indicate about galaxies?
5. What is the Big Bang Theory?
4. Galaxies must be all moving away from
us and each other.
5. All matter started in one small point.
Exploded, still moving away from all matter
6. Why are some scientists uneasy about
the idea of an expanding universe?
6. Maybe an end is indicated.
Indicated a dynamic universe
90% of our universe appears to be missing.
7. What parts of the spectrum other than visible
light are important to astronomers in their study
of the universe?
7.
a. X-rays
b. infrared
c. Ultraviolet
d. Radiowaves
All of these represent Electromagnetic Radiation: EM
8. What may be responsible for the excessively rapid
motion of stars near the edges of galaxies
8. Dark Substances with large
gravitational pull: Black Holes
(Scientists can only view 10% of the matter in the universe)
9. Why do most stars stay in a state of equilibrium for the
Majority of their lives?
9. Nuclear Reactions of Hydrogen Fusing
Into Helium produce the outward push.
Gravity produces the inward pull.
Gravity = Nuclear Energy created.
10. How does gravity play a role in both the birth and
death of stars?
10. Death because if nuclear energy stops
Gravity is the force left and the star
collapses. Birth because particles
from former stars that have exploded
will collect to form a new star.
11. What evidence is used to support the theory that we are
made of star dust?
11. We contain Fe in our blood, Ca in bone
All elements found in stars are also
found in us.
12. Discuss some of the inconsistencies in our
understanding of the Universe
12. a. Stars appear to be older than universe
b. Speed increases at the edges of galaxies..
c. Clusters of galaxies do not appear evenly
distributed in space.
“UNDERSTANDING THE UNIVERSE”:
1. Specifically describe Earth’s location in the Universe.
Name ____________Period___
1.
a.
b
c.
d.
2. How do we know what we know about our Universe?
a. ancient people observed the sky with monuments
b. Aristotle
c. Copernicus
d. Galileo
e. New inventions
f. Cepheid variables
g. Red shift
h. Hubble
3. What does the red shift indicate about
galaxies?
3.
4. Why are some scientists uneasy about the idea of an
expanding universe?
4.
5. What is the Big Bang Theory?
5.
6. What method do Scientists use to determine the
age of the universe?
6. Time = Distance/Speed
Age of the Universe =
7. What parts of the spectrum other than visible
light are important to astronomers in their study
of the universe?
7.
a.
b.
c.
d.
8. What may be responsible for the excessively rapid
motion of stars near the edges of galaxies?
8.
(Scientists can only view 10% of the matter in the universe)
9. Why do most stars stay in a state of equilibrium for the
Majority of their lives?
9.
10. How does gravity play a role in both the birth and
death of stars?
10.
11. What evidence is used to support the theory that we are
made of star dust?
11.
12. Discuss some of the inconsistencies in our understanding of the Universe.
7.