Apparent and Absolute Brightness

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

• Rigel

• Sirius

• Vega

• Betelgeuse

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

The brightness of a star as seen from earth

• Apparent magnitude

• Awesome magnitude

• Absolute magnitude

• Amazing magnitude

Tags

NGSS.HS-PS4-3

Stars that are farther away appear smaller and what?

• dimmer

• brighter

• same brightness

• none of the above

Tags

NGSS.HS-ESS1-3

the brightness of a star as it appears from Earth

• system

• apparent brightness

• moon

• constellation

What is the scale of how bright an object appears to be in the sky as we see it? This view could be impaired

• Apparent Magnitude

• Absolute Magnitude

• Parallax

• Parallel

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

The absolute brightness of a star depends on its

• distance and temperature.

• size and temperature.

• color and temperature.

• distance and color.

Which of the following would be the dimmest star? 

• -15

• -5

• 0

• 25

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

• False

• True