Absolute and Apparent Magnitude

Brightness determined from 10 parsecs away is called the

• Amazing magnitude

• Absolute magnitude

• Apparent magnitude

• Awesome magnitude

Why can the apparent magnitude be inaccurate?

• It's only from 10 parsecs away

• It may not be brighter compared to another star but instead just closer

• It only shows the brightness of stars too far away for humans to detect

• the scale is upside down

Alpha Centauri A is a star that is larger than the Sun, yet it appears much less bright. Which of the following is the best explanation for this?

• The difference in brightness is due to the distance of the Sun and Alpha Centauri A from Earth

• The smaller a star the brighter it appears

• The older the star the brighter it appears

• The larger the star always appears to be brighter

Tags

NGSS.HS-ESS1-2

Which of the following stars would be seen as the brightest star?

• Alpheratz, which has an apparent magnitude of 2

• Alcyone, which has an apparent magnitude of 3

• Deneb, which has an apparent magnitude of 1

• Sirius, which has an apparent magnitude of -1

Which star is the least bright?

• B

• A

• C

• D

In comparison to other stars in the sky, the Sun appears brighter because it is–

• Bigger

• Smaller

• Nearer

• Further

Tags

NGSS.MS-ESS1-1

The brightness of a star as seen from Earth is its

• apparent magnitude

• absolute brightness.

• parallax.

• reflective brightness.

What is the term for the brightness of a star as it would be seen from a standard distance of 10 parsecs?

• Absolute magnitude

• Apparent magnitude

• Intrinsic brightness

• Luminosity

Why might two stars with the same apparent magnitude appear differently in brightness from Earth?

• One star is closer to Earth than the other

• One star is larger than the other

• One star is moving away from Earth

• One star is a different color

Which of the following best describes apparent magnitude?

• The actual brightness of a star

• The brightness of a star as seen from Earth

• The distance of a star from Earth

• The size of a star