MySci Unit 23: Stars and Constellations

Front

What makes the Sun appear brighter than other stars?

Back

The Sun appears brighter than other stars because it is closer to us.

Front

What two gases are stars mostly made of?

Back

Stars are mostly made of Hydrogen and Helium.

Front

What two factors influence a star's apparent brightness?

Back

Luminosity and its distance from us influence a star's apparent brightness.

Front

What season is it in the Northern Hemisphere when it is tilted toward the Sun on June 21st?

Back

It is Summer in the Northern Hemisphere.

Front

What is luminosity?

Back

Luminosity is the measure of how much energy or light a star shines from its surface.

Front

What is a constellation?

Back

A constellation is a group of stars that form a recognizable pattern in the night sky.

Front

How do we measure the distance to stars?

Back

We measure the distance to stars using a method called parallax.

Front

What is the difference between a star and a planet?

Back

A star produces its own light, while a planet reflects light from a star.

Front

What is the life cycle of a star?

Back

The life cycle of a star includes stages: nebula, main sequence, red giant, and supernova or white dwarf.

Front

What is a light year?

Back

A light year is the distance that light travels in one year.