1. Standard, objective and essential Question
S6E1a.. Relate the nature of science to the progression of basic historical scientific theories (geocentric and heliocentric) as they describe our solar system, and Big Bang as it describes the formation of the universe
Objectives
Students will be able to describe the big bang theory
Essential question?
- what is the big bang theory and why is it important?

2. Astronomy
Study of everything beyond the Earth

3. FIRST STOP

4. The Universe

5. VOCABULARY 1. Theory 2. Primeval atom 3. Big Bang Theory
4. Heliocentric
5. Geocentric

6. Theory Theory = Explanation
A theory is a well organized set of accepted knowledge that explains something
Theory = Explanation

7. Along time ago, nothing existed at all.
It was dark, and really hot and there really wasn’t any life

8. Where it all Began
Scientists believe that the universe started from a PRIMEVAL ATOM
The Primeval atom was a very hot and very dense mass of energy

9. It was made up of metals, gases, and dust

10. One day…

11. All the pieces scattered and formed different things in our universe

12. The Big Bang Theory
The Big Bang Theory is the theory that explains how the universe was formed
It states that the universe was created when the primeval atom expanded and exploded

13. Draw a picture to help you remember this information
Think pair share
Read over notes for a second, tell partner about the big bang theory and the primeval atom

14. Proof for the Big Bang The galaxies are really far apart
the distance between galaxies is still expanding
So this bang is probably still happening and creating new galaxies and other things in our universe

15. Where did everything end up?

16. Starter What is the geocentric theory?
What is the heliocentric theory?
How are they different?
Which theory is actually correct?

17. Two Answers or Theories
Heliocentric
2. Geocentric

18. Geocentric
Geo = Earth

19. Geocentric = “Earth Centered”
It means that the Earth is in the center of the universe

21. Heliocentric
Helio = sun

22. Heliocentric = “sun centered”
It means that the sun is in the center of the Universe

25. PRACTICE
What do scientist believe about the universe?

26. 2. The theory that the universe began with a tremendous explosion is called……
3. Explain how the universe began.

27. 4. What was the Primeval atom made up of?
5. Given the conditions of the primeval atom, is it possible for anything to live in the atom? Explain your answer

28. Classify the Following as Heliocentric or Geocentric.
Sun
Earth
Sun centered
Earth centered
Theory of what is the middle of the universe

29. How are the geocentric and heliocentric views different?

30. FAMOUS PEOPLE YOU SHOULD KNOW

31. Ptolemy
Believed that the earth was at the center of the universe

32. Copernicus
Believed the sun was at the center of the universe

33. Kepler
Believed that the planets did revolve around the earth but not in a perfect circle.
The sun was at the exact center

34. Galileo
First person to use a telescope to look at the stars, planets, universe and so on.
This gave him proof that he believed the sun was in the middle

35. Newton
Believed sun was in the center of the universe but gravity is what holds everything together in place

36. Practice
Classify the following famous as either Heliocentric believers or geocentric believers
Copernicus
Ptolemy
Galileo
Newton
Kepler

37. Who was the first person to use a telescope?
How are Ptolemy’s theories and Copernicus theories different?

38. Exit Ticket Describe the big bang theory
Describe the heliocentric view
Describe the geocentric view
What is one thing you would like to know that was not taught today?