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Stellar Fusion
Quick Write
In this chapter, you will
learn about stellar fusion.
Write down these questions and
answer them in complete sentences.
1. What atoms are mostly being fused
on the Sun?
2. Who figured out the relationship
between mass and energy?
1. Star classification?
Mass is the most
important characteristic
that determines star type.
2. Heat energy?
Comes from fusion
reactions.
3. Hydrostatic
equilibrium?
Balance of G pushing in
and fusion pushing out.
Diagram
4. What is being fused?
Elements are being fused
together (mostly H being
fused to form He).
5. Other element fusion?
Yes, eventually helium,
carbon, neon, magnesium and
silicon can form.
All of the naturally occurring
elements in the universe are
created by fusion reactions in
stars.
6. What happens when
stars try to fuse iron?
Fusion will stop, gravity
will take over, and the
star will finish its life
cycle.
7. What equation
demonstrates where
solar energy (radiation)
comes from?
E = mc2
Check for Understanding
The most important characteristic
of classifying stars is what?
Every naturally occurring ______ comes
from fusion reactions in stars.
Movie