Lectures Flashcards
The formation of elements in the center of the star.
Stellar Nucleosynthesis
The formation of the universe began through the explosion of a primordial atom.
The Big Bang Theory
“We are made of star stuff.”
Carl Sagan
The star is unable to generate heat when it runs out of hydrogen in its core leading to its contraction and expansion. It cools down and glows red. The Helium fused into Carbon.
Red Giant
Red giant star becomes exhausted of nuclear fuel, the outer material is blown off into space leaving the inert Carbon. The remnant is known as…?
White Dwarf
Giant cloud of gas and dust.
Nebula
It is formed from nebula due to the gravity that pulled Hydrogen gas together until it spins faster and faster and becomes ignited.
A protostar
It starts to form when nuclear fusion occurs at the core of the star, it begins to contract, glow and become stable. Hydrogen is converted into Helium.
Main Sequence Star
This is said to be the remain of the white dwarf that cooled down and no longer emits light and heat.
Black Dwarf
It is formed from supernova explosion. This is also the smallest star.
Neutron Star
Explosion of star; it releases large amount of energy. Because of that, elements are dispersed into the space.
Supernova
It is a region in space where gravity is too strong that no matter can escape from it.
Black Hole
A more massive main sequence star evolves, cools and expands faster than low mass star; the largest known star. Carbon fusion still occurs and Oxygen formed.
Red Super Giant
What element from space is pulled by gravity and turn into a protostar?
Hydrogen
What will happen if a low massive main sequence star runs out of hydrogen fuel?
The star becomes a Red Giant or a Red Super Giant
How are heavy elements such as Carbon, Oxygen and Neon formed during star formation?
Via the alpha process
Why is it impossible for any matter such as light and radiation to escape from a black hole?
For it creates a gravitational pull so strong.
Why do you think massive star has shorter life span than average star?
They burn through all of the elements that fuel their life cycle faster.
The process by which average stars get their energy and convert Hydrogen into Helium.
Proton-proton Chain Reaction
A process taken by stars eight times larger than our solar system.
Carbon, Nitrogen, Oxygen Cycle
This process happens in red giant star once they leave the stage of main sequence star.
Tri-alpha Process
This is how the two primary isotopes of He is converted into Carbon.
Tri-alpha Process
A star accumulates more mass and continues to grow into red super giant. Alpha particle fusion happens at its core and creates more heavy elements.
Alpha Ladder Process
It is added to a seed nucleus.
Neutron Capture
It happens when there is a slow rate of capturing neutron while there is a faster rate of radioactive decay hence increasing the proton by 1.
S-process or Slow Process
It means that there is a faster rate of capturing neutron before it undergoes radioactive decay thus, more neutrons can combined in the nucleus. This is what happens in a supernova forming heavier elements than Fe.
R-process or Rapid Process
Formation of heavier elements than Fe.
Supernova Nucleosynthesis
