1) What does the sun do in its core?

2) What is deuterium? (extra research needed)

3) What type of elements are formed in the

core of the sun?

4) What happens when elements lighter than iron are formed? mass is created energy is released density becomes infinite

5) What happens during the formation of iron in a star that is so detrimental to the star's existence?

6) Why could iron be called the star-killer?

7) Explain how elements heavier than iron, such as gold, are formed?

8) The presenter mentioned that a supernova will result when a star collapses. After viewing the video below argue this point.

View the video on the right on the formation of stars and answer the questions below.

1) What is the force that forms stars such as our own sun?

2) What is the fuel that drives a star?

3) Throughout the life of a star opposing forces are at play keeping the star from destruction. What are these forces and how do they interact to keep the star from destroying itself?

4) What does the life-span of the star depend on?

5) What is the fate of a star smaller than our sun?

6) What is the fate of our own sun?

7) How is a white dwarf formed?

8) What type of star gives rise to a supernova?

9) Explain how a neutron star is formed?

10) How is a black hole formed?