Unit 6 Lesson 1 and 2 Review

What spiral galaxy do we live in?

• Andromeda Galaxy

• Dwarf Galaxy Saggitarius

• Milky Way Galaxy

• Snickers Galaxy

Why is the galaxy called the Milky Way?

• Because it looks hazy and milky from Earth, it glows a band of light that stretches across the sky.

• Because of its dense, fluid center, it is dark and scary

• It's a translation of an ancient name for "galaxy"

Scientists believe nearly __________ stars lie in our galaxy, and just as many planets.

• 20 billion stars

• 200 milion stars

• 200 billion stars

It would take you ___________ just to get from one end to the other!

• 100,000 light-years

• 50,000 light-years

• 100,000 star-years

What force keeps the arms of the Milky Way spinning around its center?

• The strong force

• Friction

• Gravity

What the shape of the milky way? Choose the best shape

• 
• 
• 
• 

What has to happen for a black hole to form?

• A planet must collapse inward on itself

• A large star or group of stars must collapse

• Two stars must collide with one another

Why do other stars appear so much smaller than the sun?

• They are really close.

• They are so far away.

• They are tiny stars.

^{Objects made of ice, gas and dust and orbit our sun are called:}

• Asteroids
• Comets
• moon
• Meteors

These objects that orbit the sun are nicknamed, "dirty snowballs."

• Comets
• Asteroids
• Meteors
• Meteroids