Question

1. planetary nebula

section four - understanding main ideas - high mass star
time
____ 1. black hole
____ 2. supernova
____ 3. protostar
____ 4. gravity causes this to condense into a protostar
____ 5. main sequence star
____ 6. when a star begins to run out of fuel and grows larger
____ 7. neutron star

Explanation:

To solve this, we analyze the life cycle of a high - mass star:

1. Black Hole

A high - mass star, after a supernova explosion, can collapse further to form a black hole. In the diagram, the final stage for the upper sequence (related to black hole formation) is G. So the answer is G.

2. Supernova

A supernova is an explosion that occurs at the end of a high - mass star's life before it becomes a neutron star or black hole. In the diagram, E represents the supernova. So the answer is E.

3. Protostar

A protostar is the early stage of a star's formation, formed from a cloud of gas and dust (A) that condenses under gravity. In the diagram, B is the protostar. So the answer is B.

4. Gravity causes this to condense into a protostar

The cloud of gas and dust (A) is condensed by gravity into a protostar. So the answer is A.

5. Main sequence star

After the protostar (B) stage, the star enters the main sequence stage. In the diagram, C is the main sequence star. So the answer is C.

6. When a star begins to run out of fuel and grows larger

When a main sequence star (C) runs out of fuel, it expands to become a red giant (or in the case of high - mass stars, a supergiant). In the diagram, D represents this expanded stage. So the answer is D.

7. Neutron star

After a supernova (E), a high - mass star can form a neutron star. In the diagram, F represents the neutron star. So the answer is F.

Final Answers:

1. G
2. E
3. B
4. A
5. C
6. D
7. F

Answer:

To solve this, we analyze the life cycle of a high - mass star:

1. Black Hole

A high - mass star, after a supernova explosion, can collapse further to form a black hole. In the diagram, the final stage for the upper sequence (related to black hole formation) is G. So the answer is G.

2. Supernova

A supernova is an explosion that occurs at the end of a high - mass star's life before it becomes a neutron star or black hole. In the diagram, E represents the supernova. So the answer is E.

3. Protostar

A protostar is the early stage of a star's formation, formed from a cloud of gas and dust (A) that condenses under gravity. In the diagram, B is the protostar. So the answer is B.

4. Gravity causes this to condense into a protostar

The cloud of gas and dust (A) is condensed by gravity into a protostar. So the answer is A.

5. Main sequence star

After the protostar (B) stage, the star enters the main sequence stage. In the diagram, C is the main sequence star. So the answer is C.

6. When a star begins to run out of fuel and grows larger

When a main sequence star (C) runs out of fuel, it expands to become a red giant (or in the case of high - mass stars, a supergiant). In the diagram, D represents this expanded stage. So the answer is D.

7. Neutron star

After a supernova (E), a high - mass star can form a neutron star. In the diagram, F represents the neutron star. So the answer is F.

Final Answers:

1. G
2. E
3. B
4. A
5. C
6. D
7. F