Stars

What term do scientists use to describe the apparent brightness of a celestial object as seen from Earth?

• luminosity

• apparent magnitude

• magnitude

• light-year

________________ is used to describe the size of a celestial object as seen from Earth?

• Luminosity

• Apparent magnitude

• Magnitude

• A light-year

What term do scientists use to describe a unit of astronomical distance that light travels in 1 year?

• luminosity

• apparent magnitude

• magnitude

• light-year

4. Which of the following does NOT affect the luminosity of an object?

• size

• distance

• type of star

• your location on earth

Stars are composed of ___________________.

• solid rock

• various liquids

• gases and plasmas

• solids, liquids, and gases

Compared to other stars in the sky, the Sun appears brighter because it is...

• closer

• further

• smaller

• larger

A very bright star can seem dimmer because it is...

• close

• far away

• blue in color

• larger than other stars

Which star in the table is closest to Earth?

• star 1

• star 2

• both are the same distance

• not enough info in the table

Which star in the table is larger?

• star 1

• star 2

• both are the same size

• not enough info in the table

Which star in the table is has the greatest luminosity?

• star 1

• star 2

• both are the same brightness

• not enough info in the table