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Star cycle
| Question | Answer |
|---|---|
| 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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