stars and galaxies practice questions

what size and color is our sun?

yellow, medium

what temperature is our sun?

5500 degrees Celsius

which color stars are the hottest and coolest?

blue and red

name four ways that stars are classified

mass, brightness, temperature ,composition

what are the two largest types of stars?

giant and super giant

name two types of stars smaller than our sun.

white dwarfs and neutron stars

what are stars made of?

hydrogen and helium

what are the two ways to judge a stars brightness?

apparent and absolute brightness

_________ is how bright a star looks from Earth

apparent brightness

how far away is our next closest star from the sun?

4.2 light years

All stars start out as part of a _______

nebula

How long do small and medium stars live?

Small: 200 billion years. Medium: 10 billion years

A _____ is a large cloud of dust and gas in space.

nebula

Approx. how old is our sun?

4.6 billion years

Put in order the life cycle of small star.

Nebula, Low mass protostar, Low mass star, red giant, planetary nebula, white dwarf.

Put in order the life cycle of a large star.

Nebula, High mass protostar, High mass star, Supergiant, Supernova, Neutron star, Black hole

Name three types of galaxies

Irregular, Elliptical, Spiral

What is the name of our galaxy?

Milky Way

What type of galaxy is our galaxy?

Spiral