Question

1. which color of main sequence stars lives the longest? why?
2. what property will determine the final life stage of a star? (whether it becomes a white dwarf, neutron star or black hole)
3. during which stage of life are stars the most stable?
4. will our star the sun go supernova?
5. the force that attracts other objects and particles towards its center is called what?

forces that hold a star together and control its size
word bank: increase, gravity, equilibrium, collapse, hydrogen, helium, fusion force, expand, balanced

1. the force holding a star together is
2. the force pushing a star out to give it its size is
3. in a main sequence star, these two forces are
4. once a star is done fusing into, the fusion force will, causing the star to
5. once fusion is complete, the star will because of gravity.

Explanation:

1. Red - colored main - sequence stars live the longest because they are the least massive and burn fuel slowly.
2. Mass determines the final life stage of a star. Low - mass stars become white dwarfs, intermediate - mass stars can become neutron stars, and high - mass stars can become black holes.
3. Stars are most stable during the main - sequence stage as the forces of gravity and fusion are balanced.
4. No, the Sun will not go supernova because it is not massive enough.
5. The force that attracts other objects and particles towards its center is gravity.
6. The force holding a star together is gravity.
7. The force pushing a star out to give it its size is fusion force.
8. In a main - sequence star, these two forces are balanced and the star is in equilibrium.
9. Once a star is done fusing hydrogen into helium, the fusion force will decrease, causing the star to change.
10. Once fusion is complete, the star will collapse because of gravity.

Answer:

1. Red; they are least massive and burn fuel slowly.
2. Mass
3. Main - sequence stage
4. No
5. Gravity
6. Gravity
7. Fusion force
8. Balanced; equilibrium
9. Hydrogen; helium; decrease
10. Collapse