Unit 3 Astronomy

What shape is our galaxy?

• Spiral

• Irregular

• Elliptical

Place these in order based on size (biggest to smallest): galaxies, universe, stars

• Stars, Galaxies, Universe

• Galaxies, Stars, Universe

• Universe, Galaxies, Stars

Our solar system is TWO THIRDS away from the center bulge.

• True

• False

How do scientists explain the start of the universe?

• Planets colliding into each other which created a Big Bang

• Looking at stars and how galaxies have expanded

• Stars getting bigger

• Galaxies moving

What is a comet?

• An object with dust, ice, and rocky materials

• An object with just gas

• An object with fire and gas

• An object that hits Earth

What are asteroids made of and where are they found?

• Made of gas and found in the Kuiper Belt

• Made of metal and rock and found in the Asteroid Belt

• Made of fire found right next to the Sun

Where is the Asteroid Belt located?

• Between Earth and Mars

• Between Mars and Jupiter

• Right next to the Sun

• In the Black Hole

Where are Meteors found?

• In space

• In Earth's atmosphere

• On Earth

Where are meteorites found?

• In space

• In Earth's atmosphere

• On Earth

Where are Meteoroids found?

• In space

• In Earth's atmosphere

• On Earth