Space Review

How old is the universe?

• 6 billion years old
• 1.4 billion years old
• 4.6 billion years old
• 14 billion years old

Which of the following is the best model of the big bang?

• A giant bag of skittles gets a hole cut in the corner of the bag. The skittles slowly pour out.
• A 35mm canister is held still, full of alka-seltzer and water. The cap is put on and it explodes all over the place.
• A bottle rocket is lit, then it flies into the sky and explodes into many pieces.
• Throwing a ball back and forth with a friend.

How does light from stars support the Big Bang theory?

• most objects in space are moving away from one another
• the universe is collapsing again
• the big bang happened slowly over thousands of years
• the light from objects in space is blue shifted

How does cosmic microwave background radiation support the Big Bang Theory?

• it is a part of the theory that was never explained
• it is energy left behind from the big bang
• it is radiation in space that got moved out of the way from the big bang
• it is light from the big bang that has traveled to the edge of the galaxy

The universe is still...

• heating 
• cooling 
• shrinking

When scientists say that something is red-shifted, what does that mean?

• an object is moving side to side
• an object is moving away from earth
• an object is moving toward earth
• an object is not moving

The Big Bang is responsible for creating which two elements?

• hydrogen and boron
• hydrogen and oxygen
• helium and carbon
• helium and hydrogen

What does our own sun spend its day doing?

• Fusing helium into carbon
• Fusing carbon into oxygen
• Fusing helium into boron
• Fusing hydrogen into helium 

Nuclear fusion is the ______ of lighter elements into ________ ones.

• separation, heavier
• separation, lighter
• explosion, heavier
• combining, heavier

Which force is pushing inwards?

• gravity
• pressure
• magnetism
• fusion