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Star cycle

The life cycle of a star infant, youth, middle age, old age, death
Where do stars come from? Interstellar Medium
What is a Nebula? it is where the birth of stars takes place. Called the Star Nursery.
what is the Nebula made up from? gas and dust
the gravity between gravity and gas pressure when they become equal is called... Equilibrium
What is a star made up of? hydrogen, hot gas, helium, and carbon.
what is a stars goal to achieve the Equilibrium
what phase to stars live out most of their life in? the main sequence
what happened to low-mass stars when in the main sequence? They are colder and have a more reddish appearance.
How long can a low-mass star live for in the main sequence? 80 to 100 billion years
What is the phase after the main sequence? The Red Giant
What happens in the Red Giant phase? the outer gas layer of the stars start to expand. they turn more red and they have higher Luminosity.
what thing occurs at the end of a low-mass stars life? Planetary Nebula
When do Red Giants usually form at at 10 billion years old
What happens after the red giant? the white dwarf
What happens to stars with high-mass in main sequence? They get hotter and appear to be more blue and white.
What type of star is 10 times bigger than our sun? A high-mass star
How long are high-mass stars in main sequence for? around 20 million years
What are high-mass stars called when they are out of main sequence? Red Super Giants
What is the difference between the red giant and the red super giant? different masses, the red super giant is much bigger, and instead of shrinking the red super giant expands.
what is the last stage of the massive star life? Supernova
What is a Neutron star? It is the core of the Supernova after it explodes
how do black holes form? When a massive star collapses.
what can escape a black hole? nothing
What do H-R diagrams do? It is a scale that plots each star on a graph for them to measure.
Coolest stars on an H-R diagram are...? Red
Hottest stars on an H-R diagram are...? Blue
what determines a stars life? What mass they will have (high or low).
What star is higher in the sky? High-mass star
What star is lower in the sky? low-mass star
what is an apparent magnitude? It tells us how bright an object appears from the earth.
What is he largest star in the universe? Red Super Giant star
Created by: chloewalerius
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