Question

1. choose all that apply. choose two facts about apparent magnitude. it is a measure of how bright a star looks to a person on earth. it uses a scale of positive and negative numbers. it is a measure of how bright a star really is. brighter stars have a higher positive number.

Explanation:

To determine the correct options for apparent magnitude:

1. Apparent magnitude measures how bright a star appears to an observer on Earth (so "It is a measure of how bright a star looks to a person on Earth" is correct).
2. Apparent magnitude uses a scale with positive and negative numbers (so "It uses a scale of positive and negative numbers" is correct).
3. "It is a measure of how bright a star really is" describes absolute magnitude, not apparent.
4. Brighter stars have a lower (more negative or smaller positive) apparent magnitude number, so "Brighter stars have a higher positive number" is incorrect.

Answer:

The correct options are:

• It is a measure of how bright a star looks to a person on Earth.
• It uses a scale of positive and negative numbers.