Absolute and Apparent Magnitude

Which of the following would be the dimmest star? 

• -15

• -5

• 0

• 25

What is magnitude?

• the process inside a star that produces the star's energy

• term used by scientists to describe a star's brightness

• star groupings in space

• the process inside a star that produces the star's energy

Which of the star listed would look the brightest when observed from Earth?

• Rigel

• Sirius

• Vega

• Betelgeuse

Apparent (magnitude) brightness is affected by a star's distance from Earth.

• False

• True

One physical property of a star is absolute brightness. Which of the following is used in determining the absolute brightness of a star?

• how bright the star actually is

• how bright the star appears to be from the Earth

• the number of prominences the star makes

• the direction the star rotates

Which color of star is the coolest?

• blue

• yellow

• white

• red

A plot of the surface temperatures of stars compared to their absolute magnitude is called

• an H-R diagram

• constellation map

• a graph

• spectrum.

Tags

NGSS.HS-ESS1-3

Which of the following best describes absolute magnitude?

• A measure of a star's brightness as seen from Earth

• A measure of a star's brightness at a standard distance of 10 parsecs

• The total energy output of a star

• The distance of a star from Earth

What is the main difference between absolute magnitude and apparent magnitude?

• Absolute magnitude measures brightness from a standard distance, while apparent magnitude measures brightness as seen from Earth

• Absolute magnitude is always greater than apparent magnitude

• Apparent magnitude is a measure of a star's size

• Absolute magnitude is affected by the star's temperature

If two stars have the same apparent magnitude but different absolute magnitudes, what can be inferred?

• They are at the same distance from Earth

• They have the same luminosity

• They are at different distances from Earth

• They have the same temperature