Stars

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

• luminosity

• apparent magnitude

• magnitiude

• lightyear

______________ is used to describe the size of a celestial object as seen from Earth.

• luminosity

• apparent magnitude

• magnitiude

• lightyear

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

• luminosity

• apparent magnitude

• magnitiude

• lightyear

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 plasma

• solids, liquids, and gases

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

A very bright star can seem dimmer because it is

• close

• far away

• larger than other stars