Earth Formation
How did the earth form?
Due to gravity
What is a red giant?
A very large star with high luminosity and low surface temperature
What combines to form a larger nucleus?
Two or small nuclei
What is the definition for the Big Bang?
Rapid expansion of the universe from a single point
What Is the heaviest element a star can form?
Iron
Gravity pulled in what?
Material
What amount of layers of fusion are at the core?
Two
Speed of light to remain constant is?
Time
About how old is our universe?
13.6 billion years old
What do heavier elements require?
Supernova
Due to pressure and collisions, what happened?
Caused Earth to heat up
What happens when hydrogen is used up?
The core starts to collapse inward and the core temperature increases
What causes core to heat up to extreme temperatures of millions of degrees?
Pressure at the center of the start
How can we tell our universe is expanding?
Redshift/Light shifts red as the light source moves away from the observer
The hot core of the sun radiates from.?
Nuclear Fusion
When gravity pulled denser material to the core, what happened?
It pulled lighter material to the surface
What happens when temperature is high enough?
helium fuses into heavier elements like carbon and oxygen
When is energy absorbed?
When Iron or nuclei more massive than iron undergoes fusion
What happened after the Big Bang?
The universe began to cool, stars began to form as gravity pulled clumps of matter together
After the big bang, what happened?
The universe began to cool, stars began to form as gravity pulled clumps of matter together