Universe
What is the age of the Universe?
13.8 Billion Years Old
What is the name of our Galaxy?
The Milky Way Galaxy
What is the age of our solar system?
4.6 Billion Years old
What is the name of the star in our Solar System?
The Sun
What color in the visible light spectrum has the longest wavelength?
What page can you find the answer?
Red
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The universe started from an explosion called the
Big Bang
What type (shape) galaxy is our galaxy?
A spiral galaxy
List the 8 planets in order of distance from the sun
Mercury, Venus, Earth Mars, Jupiter, Saturn, Uranus, Neptune
How does the sun create energy?
Through nuclear fusion
( H + H = He + energy)
What is the eccentricity formula?
On what page can you find the answer?
Distance between foci
___________________
Length of major axis
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On which page in the ESRT is the electromagnetic spectrum found?
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What are the 3 main types of galaxies?
Spiral, Elliptical, Irregular
Which planets are terrestrial and which are jovian, and what are some differences?
First 4= terrestrial = rocky, dense, smaller, faster orbit
Last 4= jovian= gassy, less dense, larger, slower orbit
A star's life cycle depends on what 2 characteristics?
Mass and Size
What is the density of the one planet that can float on water?
Which page can you find the answer?
.7
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What is our rhyme to remember red and blue shift?
Red ahead
Blue to you
Where are we located in our galaxy?
Outerband (not at the center)
What is the difference between geocentric model and heliocentric model, and which is correct?
Geocentric= earth center
Heliocentric= sun center (correct)
As planets get closer to a star (the sun), what happens to the speed of its orbit?
It gets faster
Which planet's orbit is closest to being a perfect circle?
Which planet's orbit is the most oval?
Which page did you use?
Venus
Mercury
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What are the two pieces of evidence that the universe is still expanding?
Redshift & Cosmic Background Radiation
How many galaxies are there estimated to be in the universe?
100 billion!
What is eccentricity, and what do the numbers 0 & 1 mean?
Eccentricity tells you how elliptical your orbit is
0 = perfect circle
1= straight line
How do massive stars end their lives?
How do smaller stars end their lives?
Neutron star or black hole
white dwarf
Compare the sun's temperature and luminosity to that of Rigel.
Which page did you use?
The Sun is cooler and less luminous
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