Choose the best answer to each of the following. Explain your reasoning. What shows down the contraction of a star-forming cloud when it makes a protostar? (a) production of fusion energy (b) magnetic fields (c) trapping of thermal energy inside the protostar.

Question

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Answer 1

Textbook Question

Chapter 9, Problem 1QQ

Choose the best answer to each of the following. Explain your reasoning.

What shows down the contraction of a star-forming cloud when it makes a protostar? (a) production of fusion energy (b) magnetic fields (c) trapping of thermal energy inside the protostar.

Expert Solution & Answer

To determine

The correct option for the cause that slows down the contraction of a star-forming cloud when it makes a protostar.

Answer to Problem 1QQ

Option (c) is the correct answer. Trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud.

Explanation of Solution

Introduction:

Protostar is a contracted mass of gases and it represents the early stage in the formation of a star. This phase starts when a fragment of cloud collapses under the gravitational forces and ends when a pre-main-sequence star is formed due to the depletion of in falling gas. This pre-main-sequence star later forms a main-sequence star.

During the formation of protostar, the thermal energy gets trapped inside the protostar. Also, the gravity results in the contraction of the protostar due to inward force. But the increase in thermal energy results in an increase of thermal pressure, which pushes the layers outward. Hence, contraction of star-forming cloud slows down.

Thus, option (c) is correct.

Option (a) is incorrect as no fusion energy is produced during the formation of protostar.

Option (b) is incorrect as there is reduction in magnetic fields.

Conclusion:

Hence, trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud when it makes a protostar.

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Answer 2

Textbook Question

Chapter 9, Problem 1QQ

Choose the best answer to each of the following. Explain your reasoning.

What shows down the contraction of a star-forming cloud when it makes a protostar? (a) production of fusion energy (b) magnetic fields (c) trapping of thermal energy inside the protostar.

Expert Solution & Answer

To determine

The correct option for the cause that slows down the contraction of a star-forming cloud when it makes a protostar.

Answer to Problem 1QQ

Option (c) is the correct answer. Trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud.

Explanation of Solution

Introduction:

Protostar is a contracted mass of gases and it represents the early stage in the formation of a star. This phase starts when a fragment of cloud collapses under the gravitational forces and ends when a pre-main-sequence star is formed due to the depletion of in falling gas. This pre-main-sequence star later forms a main-sequence star.

During the formation of protostar, the thermal energy gets trapped inside the protostar. Also, the gravity results in the contraction of the protostar due to inward force. But the increase in thermal energy results in an increase of thermal pressure, which pushes the layers outward. Hence, contraction of star-forming cloud slows down.

Thus, option (c) is correct.

Option (a) is incorrect as no fusion energy is produced during the formation of protostar.

Option (b) is incorrect as there is reduction in magnetic fields.

Conclusion:

Hence, trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud when it makes a protostar.

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Answer 3

Textbook Question

Chapter 9, Problem 1QQ

Choose the best answer to each of the following. Explain your reasoning.

What shows down the contraction of a star-forming cloud when it makes a protostar? (a) production of fusion energy (b) magnetic fields (c) trapping of thermal energy inside the protostar.

Expert Solution & Answer

To determine

The correct option for the cause that slows down the contraction of a star-forming cloud when it makes a protostar.

Answer to Problem 1QQ

Option (c) is the correct answer. Trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud.

Explanation of Solution

Introduction:

Protostar is a contracted mass of gases and it represents the early stage in the formation of a star. This phase starts when a fragment of cloud collapses under the gravitational forces and ends when a pre-main-sequence star is formed due to the depletion of in falling gas. This pre-main-sequence star later forms a main-sequence star.

During the formation of protostar, the thermal energy gets trapped inside the protostar. Also, the gravity results in the contraction of the protostar due to inward force. But the increase in thermal energy results in an increase of thermal pressure, which pushes the layers outward. Hence, contraction of star-forming cloud slows down.

Thus, option (c) is correct.

Option (a) is incorrect as no fusion energy is produced during the formation of protostar.

Option (b) is incorrect as there is reduction in magnetic fields.

Conclusion:

Hence, trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud when it makes a protostar.

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Answer 4

Textbook Question

Chapter 9, Problem 1QQ

Choose the best answer to each of the following. Explain your reasoning.

What shows down the contraction of a star-forming cloud when it makes a protostar? (a) production of fusion energy (b) magnetic fields (c) trapping of thermal energy inside the protostar.

Expert Solution & Answer

To determine

The correct option for the cause that slows down the contraction of a star-forming cloud when it makes a protostar.

Answer to Problem 1QQ

Option (c) is the correct answer. Trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud.

Explanation of Solution

Introduction:

Protostar is a contracted mass of gases and it represents the early stage in the formation of a star. This phase starts when a fragment of cloud collapses under the gravitational forces and ends when a pre-main-sequence star is formed due to the depletion of in falling gas. This pre-main-sequence star later forms a main-sequence star.

During the formation of protostar, the thermal energy gets trapped inside the protostar. Also, the gravity results in the contraction of the protostar due to inward force. But the increase in thermal energy results in an increase of thermal pressure, which pushes the layers outward. Hence, contraction of star-forming cloud slows down.

Thus, option (c) is correct.

Option (a) is incorrect as no fusion energy is produced during the formation of protostar.

Option (b) is incorrect as there is reduction in magnetic fields.

Conclusion:

Hence, trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud when it makes a protostar.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

To determine

The correct option for the cause that slows down the contraction of a star-forming cloud when it makes a protostar.

Answer to Problem 1QQ

Option (c) is the correct answer. Trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud.

Explanation of Solution

Introduction:

Protostar is a contracted mass of gases and it represents the early stage in the formation of a star. This phase starts when a fragment of cloud collapses under the gravitational forces and ends when a pre-main-sequence star is formed due to the depletion of in falling gas. This pre-main-sequence star later forms a main-sequence star.

During the formation of protostar, the thermal energy gets trapped inside the protostar. Also, the gravity results in the contraction of the protostar due to inward force. But the increase in thermal energy results in an increase of thermal pressure, which pushes the layers outward. Hence, contraction of star-forming cloud slows down.

Thus, option (c) is correct.

Option (a) is incorrect as no fusion energy is produced during the formation of protostar.

Option (b) is incorrect as there is reduction in magnetic fields.

Conclusion:

Hence, trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud when it makes a protostar.

Answer 8

Expert Solution & Answer

To determine

The correct option for the cause that slows down the contraction of a star-forming cloud when it makes a protostar.

Answer to Problem 1QQ

Option (c) is the correct answer. Trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud.

Explanation of Solution

Introduction:

Protostar is a contracted mass of gases and it represents the early stage in the formation of a star. This phase starts when a fragment of cloud collapses under the gravitational forces and ends when a pre-main-sequence star is formed due to the depletion of in falling gas. This pre-main-sequence star later forms a main-sequence star.

During the formation of protostar, the thermal energy gets trapped inside the protostar. Also, the gravity results in the contraction of the protostar due to inward force. But the increase in thermal energy results in an increase of thermal pressure, which pushes the layers outward. Hence, contraction of star-forming cloud slows down.

Thus, option (c) is correct.

Option (a) is incorrect as no fusion energy is produced during the formation of protostar.

Option (b) is incorrect as there is reduction in magnetic fields.

Conclusion:

Hence, trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud when it makes a protostar.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

To determine

The correct option for the cause that slows down the contraction of a star-forming cloud when it makes a protostar.

Answer 12

Answer to Problem 1QQ

Option (c) is the correct answer. Trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud.

Answer 13

Explanation of Solution

Introduction:

Protostar is a contracted mass of gases and it represents the early stage in the formation of a star. This phase starts when a fragment of cloud collapses under the gravitational forces and ends when a pre-main-sequence star is formed due to the depletion of in falling gas. This pre-main-sequence star later forms a main-sequence star.

During the formation of protostar, the thermal energy gets trapped inside the protostar. Also, the gravity results in the contraction of the protostar due to inward force. But the increase in thermal energy results in an increase of thermal pressure, which pushes the layers outward. Hence, contraction of star-forming cloud slows down.

Thus, option (c) is correct.

Option (a) is incorrect as no fusion energy is produced during the formation of protostar.

Option (b) is incorrect as there is reduction in magnetic fields.

Conclusion:

Hence, trapping of thermal energy inside the protostar slows down the contraction of a star-forming cloud when it makes a protostar.