L1+2 The Universe

Space and all the matter and energy in it.

• Space

• Universe

• Sun

• Solar System

Which of the following is the largest?

• Star

• Supercluster

• Cluster

• Galaxy

What are the two types of universe?

• Marvel and DC

• Normal and crazy

• Observable and the whole

• Observable and black holes

Why are there things in the universe that we can't observe yet? (pick all correct ones)

• They are too dark, we can't see them.

• Our technology is not there yet to observe everything.

• We don't even know they exist.

• They are just too far away, light takes time to reach us from them.

A star is...

• a celebrity

• a huge ball of gas

• a galaxy

• our Sun

What type of galaxy is this?

• elliptical

• irregular

• spiral

• solar system

What is the other name for inner planets?

• Outer planets

• Terrestrial planets

• Earth

• Gas Giants

What types of planets usually have rings and many moons?

• Inner planets

• Outer planets

• Terrestrial planets

• Jupiter

From smallest to largest, our Earth is in Solar system, ________, the local group, _________,

• Milky Way Galaxy, Virgo Supercluster

• Milky Way Galaxy, Cluster

• Virgo Supercluster, Milky Way

• the universe, Virgo Supercluster

Why are black hole invisible?

• it's too dark in the space to see anything

• they are completely hidden by disks of glowing material

• they are made of black substance

• their gravity is so strong that not even light can escape them