Proyect about life of stars and life cycles of stars

1. LIFE OF STARS
By Paula Corral & Elena Rodríguez 4ºD

2. INDEX
1. Introduction
2. Life of small stars
3. Life of massive stars
4. Stellar Nebula
5. Average Star
6. Red Giant
7. Planetary Nebula
8. White Dwarf
9. Massive Star
10. Red Supergiant
11. Supernova
12. Neutron Star
13. Black Hole
14. Sources

3. 1. Introduction
https://www.youtube.
com/watch?v=tnzRUYSi
Cnc

4. 2.LIFE OF SMALL STARS

5. 3. LIFE OF MASSIVE STARS

6. 4. STELLAR NEBULA
- 1º STAGE
- Stars are formed in stellar nebula
- cloud of superheated gases and dust
H2 GRAVITY
STELLAR
NEBULA

7. 5. AVERAGE STAR
-For the stellar nebula to turn into a
average star, it has to fuse Hydrogen
into Helium. The top number indicates
the mass while the bottom number is
the atomic number of the atom

8. 6. RED GIANT
- Formed during the later stages of
the evolution of a star
- They are very bright because they
are so large, although their
surface temperature is lower than
that of the Sun

9. 7. PLANETARY NEBULA
- A planetary nebula happens
when helium continues to fuse
INTERESTING FACT: early
astronomers thought they looked a
bit like planets through a small
telescope

10. 8. WHITE DWARF
- Last stage of a small star
- Not enough energy to fuse carbon
- Still hot
- Turns into a black dwarf

11. 9.MASSIVE STAR
- Are born out of a
cloud of dust called
Nebulae.
- It contains a nuclear
fusion process

12. 10. Red Supergiant
- Is a giant star that
has consumed its
core's supply of
hydrogen fuel.
- Helium has
accumulated in the
core, and hydrogen is
now undergoing
nuclear fusion in the
outer shells.

13. 11. Supernova
- A supernova is the spectacular explosion of a high-mass
star that has come to the end of its life.
- Supernova can
shine as brightly
as an entire
galaxy

14. 12. NEUTRON STAR
- Is remnant of supernova that
ejects particles.
- If its mass is any greater,
its gravity will be so
strong that it will shrink
further to become a black
hole.

15. 13. BLACK HOLE
-They are formed when very massive stars come to the end of
their lifetime, in a supernova event.
- Close to the object,
gravity is so strong
that nothing can get
away, not even light

16. 15. SOURCES
https://science.nasa.gov/astrophysics/focus-areas/how-do-sta
rs-form-and-evolve
https://lifeofastarinspace.weebly.com/planetary-nebula.html
http://www.schoolsobservatory.org.uk/learn/astro/stars/cycle
/neutron
http://www.astro.keele.ac.uk/workx/starlife/StarpageS_26M.ht
ml