Light
What are light particles called?
Photons
What is the age of the universe?
13.8 billion years
What element are all stars made of?
Hydrogen
All stars begin here.
Stellar nebula
What variable is on the x-axis?
Temperature
What direction is an object moving relative to the observe if it is said to be blueshifting?
Approaching observer
What is the force that is pushing our universe to expand?
Dark energy
Where within a star does nuclear fusion occur?
The core
What determines the path a star will take?
The original size of the star
What variable is on the y-axis?
Luminosity
What type of EM radiation has the shortest wavelength?
Gamma radiation
How would the universe be described before the big bang?
The universe was in a hot, dense state
What is the heaviest element a star can fuse?
Iron
When do stars move from a protostar to an average star?
When nuclear fusion begins to occur in the core
Where do stars spend most of their life?
The main sequence
Which EM radiation travels the fastest?
All EM radiation travels at the same speed.
What does Hubble's Law state?
The farther a galaxy is away, the faster it is moving
Are stars that contain heavy elements young or old?
Old
What stage follows a red giant?
What is the temperature of the giants?
3500
What is the Doppler effect?
The change in frequency of a wave in relation to the observer.
What are the three pieces of evidence for the Big Bang Theory?
1. Redshifting/Expansion
2. Background Microwave Radiation
3. Nucleosynthesis
What is the force of fusion balanced with that prevents a star from collapsing in on itself?
The force of gravity
List ALL of the stages of a star that is more than 8x the size of our sun and when it collapses, the core is 3x the size of our sun.
1. Stellar nebula
2. Protostar
3. Massive star
4. Supergiant
5. Supernova
6. Black hole
What color is the hottest?
Blue