The Big Bang Theory

1
The Big Bang Theory
2
Introduction

• video

3
The Big Bang Theory

• The Big Bang Theory explains how the universe
  began.
• All the matter in the universe expanded from a
  small, dense point.
• The universe continues to expand.

4
Evidence for an expanding universe

• Balloon demo

5
B 1-2 B 2-3 B 3-1 A 1-2 A 2-3 A 3-1






6
Evidence for expansion

• Red shift demo

7
Red Shift

• The red shift of the galaxies tells us that the
  universe is expanding.
• In the red shift wavelengths become longer.
• A galaxy that is moving away from the earth
  will show a red shift in the spectrum.

8
Red Shift

• Video

9
Evidence for expansion

• Raisin Bread example