Download Stages in the Formation of Stars

Stages in the Formation of Stars
Stellar Evolution
centre
compress
dust
fusion
gas
gravitational
helium
hydrogen
Questions:
increases
main sequence
nebula
pressure
stable
temperature
10 billion
10 000 000°C
1. __________ and ________in a ________are
attracted by forces and pulled into the
_________________.
1. What is nebula?
_____________________________________________
2. What brings the gas in a nebula together to form a star?
__________________________________________
3. Name the process that causes a star to begin
producing vast amounts of energy.
_____________________________________________
4. What two processes balance each other to make a star
stable?
_________________________________________
2. As the cloud begins to _________________,
the temperature __________________.
5. Describe the events in the lifetime of a tiny cool star.
_____________________________________________
6. What process gives a star the mass of the Sun a
“second life: after its hydrogen fusion stage is over?
__________________________________________
3. When the ____________in the centre reaches
__________, ___________ of __________ into
________________ begins.
7. What causes a red giant to form?
_____________________________________________
8. What happens to a massive star when its fusion period
is over?
__________________________________________
4. The increased _____________ and the energy
production stops the _____________ collapse of
the star. The star becomes ______________ and
begins to shine brightly.
5. On a Hertzsprung- Russell diagram, the star is
now located on the ________________.
6. A star like the Sun will stay ___________ for
______________ years.
9. What determines the outcome of a supernova?
_____________________________________________
10. Describe the two end results of the cores of massive
stars.
_____________________________________________