Galaxy Types
HR diagram
Parts of a Star
Universe Formation Theories
Review
100
What type of galaxy do we live in?
A spiral
100
Where are most stars located?
The main sequence
100
What is the center of a star?
The core
100
The Big Bang Theory states that the galaxy formed ________________ years ago
14.5 billion years
100
How many stars are in the Milky Way?
Billions
200
Name the 3 types of galaxies.
Elliptical, Spiral and irregular
200
Super Giants are located where?
The top right
200
The middle layer of the Sun is the:
Radiative zone
200
CBR supports which theory?
The Big Bang Theory
200
What was the first spacecraft?
Sputnik
300
What defines a galaxy?
A group of stars, gas and dust
300
White dwarf stars are located where?
The bottom left
300
The outermost layer of the Sun is the:
Convective zone
300
What is CBR
Radiation from the back of the universe that got there when the big bang occurred.
300
List the 3 layers of the Sun's atmosphere
The Photosphere, Chromosphere and Corona
400
How did the Milky Way get it's name?
It came from a Latin root
400
List characteristics of white dwarf stars
They are small, hot and bright.
400
What allows a core of a star to remain gaseous?
A process called fusion.
400
State the Big Bang Theory
The universe started with an explosion of matter.
400
List the 4 terrestrial planets
Venus, Mars, Mercury and Earth
500
What is at the center of every galaxy?
A black hole
500
List characteristics of Red Giants
They are close to death, Big, Red, Dim and cooler
500
What are the two final elements to form in a stars core
Iron and Magnesium
500
State the steady state theory:
The universe is expanding but it has always kept the same density
500
What is the more widely accepted theory for the formation of the universe?
The Big Bang Theory
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