Homework-Galaxies and Stars

Galaxies are composed of (best answer)

• stars

• stars and gas

• stars, dust, and gas

• stars, dust, and gas held together by gravity

Tags

NGSS.MS-ESS1-2

The Milky Way Galaxy is a

• spiral

• lenticular

• elliptical

• irregular

The unit used to measure distances within our solar system

• kilometers

• miles

• light year

• astronomical units

Tags

NGSS.MS-ESS1-3

The unit used to measure distances between objects like stars or galaxies is

• kilometers

• miles

• light years

• astronomical units

Light years are a measure of

• time

• speed

• distance

• light

A light year is...

• The speed light travels

• How long it takes light to get to you from the sun

• The distance light can travel in a year

• How many years it takes light to be emitted

What color are the coolest stars?

• blue-white

• yellow

• orange

• red

The brightness of a star as seen from Earth is

• apparent brightness

• absolute brightness

• parallax

• reflective brightness

The brightness the star would have if it were a standard distance from earth is

• apparent brightness

• absolute brightness

• brightness

• candid brightness

What color of star is the hottest?

• blue

• red

• yellow

• orange

Tags

NGSS.HS-ESS1-3