Questions

ASTR-1-45046-F25 Lecture: The Stellar Circle of Life

Matching

Match the description with the letter. 1: Which star is most like our Sun? 2: Which star will have changed the least 10 billion years from now? 3: Which star could be no more than a few million years old? 4: Which star is NOT fusing hydrogen into helium in its core?

Options

A.A

B.D

C.C

D.B

View Explanation

Verified Answer

Please login to view

Step-by-Step Analysis

We are given a matching question with descriptions labeled 1 through 4 and lettered options A, B, C, D to match. The correct mapping provided is: 1 -> B, 2 -> C, 3 -> A, 4 -> D. I will explain the reasoning for each description and why the chosen letter is correct, as well as why the other letters would be incorrect. Description 1: Which star is most like our Sun? - Correct choice: B - Why B is correct: The Sun is a G-type main-sequence star (a relatively middle-aged, middle-temperature, hydrogen-burning dwarf). Among typical HR diagram positions, a star that is a mid-range in both temperature and luminosity best resembles the Sun. Option B sits along the main-sequence band near solar-like properties, making it the closest match to our Sun. - Why the other options are not correct: - A would correspond to a star with higher temperature and luminosity ......Login to view full explanation

Log in for full answers

We've collected over 50,000 authentic exam questions and detailed explanations from around the globe. Log in now and get instant access to the answers!