Stars & Galaxies

Front

What is the main element in a star's composition? Options: Hydrogen, Helium, Lithium, Heavy Elements

Back

Hydrogen

Front

The color of the star tells us its 

Back

Temperature

Front

The hottest color star is

Back

Blue

Front

Our star is a

Back

yellow/ medium star

Front

What do we use to classify the temperature, brightness, and size of stars? Options: Color, The star's shape, H-R Diagram

Back

H-R Diagram

Front

Which measurements allows astronomers to compare the brightness of stars? Options: parallax, red shift, absolute magnitude, apparent magnitude

Back

absolute magnitude

Front

Which statement describes stars from coolest to hottest? Options: blue, white, red, orange, white, yellow, orange, red, orange, yellow, blue white, red, orange, yellow, white, blue

Back

red, orange, yellow, white, blue

Front

Galaxies are composed of

Back

billions of stars, dust and gas

Front

What is the term used for a cloud of gas and dust?

Back

nebula

Front

Which star has the lowest luminosity?

Back

D