Apparent and Absolute Brightness

The brightness of a star as seen from Earth is its

• apparent magnitude

• absolute brightness.

• parallax.

• reflective brightness.

Brightness determined from 10 parsecs away is called the

• Amazing magnitude

• Absolute magnitude

• Apparent magnitude

• Awesome magnitude

Which of the following terms directly relate to the actual brightness of a star?

• size and brightness

• absolute brightness and size

• apparent magnitude and size

• apparent magnitude and absolute brightness

Based on the information in the table, which statement is true?

• Sirius and Rigel appear blue from Earth

• Sirius and Arcturus appear the dimmest from Earth

• Sirius appears the brightest from Earth, but Rigel has the greatest absolute brightness.

• Rigel has a lower absolute brightness than Sirius.

Tags

NGSS.HS-ESS1-3

What conclusion can you draw based on the graph?

• yellow stars are farther from Earth than red stars

• absolute brightness is not related to color of a star

• blue stars are generally brighter than other stars

• a blue star will appear brighter from Earth than a red star

Based on the graph, which color most likely has the lowest absolute brightness?

• red

• blue

• white

• yellow

Based on the graph, which color of star has the greatest absolute brightness?

• blue

• red

• white

• yellow

Which of the following correctly defines absolute brightness of a star?

• The brightness of a star as seen from various distances.

• The brightness of a star compared to the Sun.

• The true brightness of a star at a standard distance.

• The true brightness of a star as seen from Earth.

Which of the following correctly defines apparent brightness of a star?

• The brightness of a star as seen from various distances.

• The brightness of a star compared to the Sun.

• The true brightness of a star at a standard distance.

• The brightness of a star as seen from Earth.

What is the term for the brightness of a star as observed from Earth?

• Apparent brightness

• Absolute brightness

• Intrinsic brightness

• Relative brightness