ISM
This is the name for the material that collapses and forms stars
what is ISM
This term describes the occurrence that is the only thing that can overcome the 4 factors resisting gravity and contraction to form a star
What is a shock wave
This reaction adds protons together to produce helium
What is proton-proton chain
This transfer of energy requires close contact between particles but is not useful in stars
What is conduction
This is the balance between gravity and pressure to keep stars as spheres
What is hydrostatic equilibrium
what is thermal energy
Once the temperature in the core is hot enough and dense enough the body is deemed a _______
What is a protostar
This particle is ejected to form a neutron from a proton
What is a neutrino
Resistance of gas to the flow of radiation
What is opacity
As pressure decreases the affect of gravity on the star ________
This factor prevents stars from forming due to the ions found within the clouds and resist gravity
what is magnetic field
A protostar is a dense prestellar object that is hot enough to emit IR radiation but not hot enough to generate _________
what is Nuclear fusion
This "barrier" prevents the protons from interacting
What is the Coulomb barrier
Flow of energy through a gas in a given space
What is radiative flow
As gravity increases the density of the star increases which leads to greater reactions causing __________ to increase
What is pressure
This factor resists gravitational contraction due to the spinning motion of the cloud as it contracts
What is rotation
The flattened disk surrounding the protostar is
what is a protostellar disk
High temperature allows for overcoming of the coulomb barrier due to high
what is velocity
The most common form of energy flow in stars that deals with the cyclical flow of the gas
What is convection
The relationship between pressure and temperature in the fluctuations of a stars size is not as the
This factor causes clouds to twist and distort which resists contraction due to gravity
What is turbulence
What are biploar flows
This reaction is found in stars that are more than 1.1 solar mass
What is the CNO Cycle
what is pressure
The pressure-temperature thermostat ensures that the star will continue to perform __________ for very long periods of time
What are nuclear reactions