HR Diagram
The Sun
Galaxies
Universe
Mixed bag
100
A cloud of gas & dust that collapses on itself.
What is a nebula?
100
Innermost layer of the sun.
What is the core
100
Earth is a part of this galaxy.
What is the Milky Way Galaxy
100
The age of the universe.
What is 13-15 billion years.
100
The process of hydrogen combining to form helium
What is fusion
200
Temperature & luminosity of stars on the lower left of H-R diagram.
What is hot & dim
200
Most of the light comes from this layer.
What is the photosphere?
200
Pulsating stars that expand and contract over a certain time period.
What is a variable star.
200
Theory of how the universe formed - explosion.
What is Big Bang.
200
The element that makes up a white dwarf.
What is carbon.
300
The color of the hottest stars.
What is blue
300
The color of the sun
What is yellow.
300
A group of stars forming an oval shape.
What is elliptical
300
Left over radiation in the form of microwaves.
What is cosmic radiation?
300
Most abundant element found in main sequence stars.
What is hydrogen
400
Approximate temperature of the sun.
What is 5200 C
400
In its next stage of life the sun will become
What is a red giant
400
The shape of the Milky Way galaxy.
What is spiral.
400
Predicted outcome is the universe continues to expand.
What is open universe
400
When the sun is done fusing hydrogen it will become a
What is red giant.
500
The diagonal line of stars on the H-R diagram.
What is main sequence.
500
The final outcome of the sun at the end of its life cycle.
What is white dwarf.
500
Galaxies that are not spiral or elliptical.
What is irregular galaxy
500
Predicted outcome if the universe stops expanding and remains constant.
What is a flat universe.
500
99% of all the mass in our solar system is found in
What is the sun
M
e
n
u