Question

I A 3044 - Sison UNIT 2 LESSON 9 Astronomy: The Stars > Star Composition Portfolio Ef Back to Intro Page Mark as Comple Question: What happened to the temperature throughout the life of the star? (Drag and drop the changes in temperature to their appropriate spots in the image.) (3 points) [en-US) Data 19510 About information 1 000 000 Stage: Man Sequence 100.000 48,000 K 1.00 Main Sequence 36,000 K 100 26,000 K 17.500 K . 0 001 100.000 55.50 Mass: 1 x5 Terceras (Krfmm)) normal v #: Temperature went higher and then lower. #: Temperature went lower. #: Temperature went higher.

Answer 1

To address the changes in temperature throughout the life of a star, let's categorize the movements you've described:

1. Main Sequence Stage: During this stage, stars typically maintain a stable temperature. However, we can highlight a trend where the temperature starts high and may vary slightly based on the mass of the star. For a star similar to the one mentioned (with high temperatures of around 36,000 K to 48,000 K), we can say:

   • Temperature went higher and then lower. (As the star evolves, it may initially increase in temperature but then decrease when moving off the main sequence).

2. Post-Main Sequence (Red Giant phase): Generally, after a star exhausts hydrogen in its core, it expands and its outer layers cool down, indicating:

   • Temperature went lower. (As it expands into a red giant, the surface temperature drops significantly).

3. End Stages (White Dwarf): After a star sheds its outer layers, it leaves behind a core that becomes a white dwarf. The temperature of the white dwarf is initially very high but will gradually decrease over time:

   • Temperature went higher. (When the star initially leaves the main sequence, temperatures rise as it contracts).

In summary:

• Main Sequence: Temperature went higher and then lower.
• Post-Main Sequence (Red Giant phase): Temperature went lower.
• End Stages (White Dwarf): Temperature went higher.