1. Our Position in the Solar System Heliocentric & Geocentric Models
Lesson 1 & 2
Big Bang
Our Position in the Solar System
Heliocentric & Geocentric Models

2. Lesson 1: Heliocentric & Geocentric Models
Standard S6E1.a
Relate the Nature of Science to the progression of basic historical scientific theories (geocentric and heliocentric) as they describe our solar system and the Big Bang as it describes the formation of the universe.

3. Lesson 2: Our Position in the Solar System
Standard S6E1.b
Describe the position of the solar system in the Milky Way galaxy and the universe.

4. What created all of this?

5. What created all of this?

6. Theory that the universe was produced by a great explosion.
Big Bang
Theory that the universe was produced by a great explosion.
Now begins the story of our universe & solar system…

7. Inside our universe…..

8. Helium +
Hydrogen =

9. After Big Bang, the universe was created.
There were gases called helium and hydrogen that were left over.
200 million years later, these gases came together to form the first stars

10. We live in one of these galaxies.
Gravity drew these stars together into families of stars called GALAXIES
We live in one of these galaxies.

11. There are galaxies….
Gravity

13. Galaxy

14. Galaxy

15. en.wikipedia.org

16. Galaxy

18. Galaxy

19. That’s how the universe and galaxies like our Milky Way formed…
Galaxy
That’s how the universe and galaxies like our Milky Way formed…
but what about our solar system?

20. Nebula

21. Clumps of material began to form in the center of the spinning matter. Gravity drew more and more material in ward. As the clump grew larger, so did the amount of pressure, which created tremendous amounts of heat. This formed our sun.
During the next million years, grains of dust around the sun collided into one another. Many stuck together and eventually formed the 9 planets, moons, asteroids, comets, and space rocks.

22. Nebula Spinning
astrobob.areavoices.com -

23. Nebula Spinning
astrobob.areavoices.com -

24. Clumps of material began to form in the center of the spinning matter. Gravity drew more and more material in ward. As the clump grew larger, so did the amount of pressure, which created tremendous amounts of heat. This formed our sun.
During the next million years, grains of dust around the sun collided into one another. Many stuck together and eventually formed the 9 planets, moons, asteroids, comets, and space rocks.

25. Fill in Chart about the formation of the Solar System.
Galaxy
Fill in Chart about the formation of the Solar System.

26. There are 300 billion stars in this galaxy.
Milky Way Galaxy
There are 300 billion stars in this galaxy.
Our sun is one of them.

27. Galaxy This is the Milky Way Galaxy.
Our solar system is inside the Milky Way galaxy.

28. Galaxy
The Milky Way Galaxy has a spiral shape. It is shaped like a giant flattened disk with a bulge in the middle (think of a fried egg sunny-side up).

29. Galaxy
Where are we?
Our sun and solar system is on one of the outer arms of the Milky Way galaxy.

30. Galaxy

31. How BIG is our galaxy? 100,000 light years in diameter What is a lightyear? : distance light travels in a year. In km… 1 ly=9.5 trillion, billion km.

33.
Astronomical unit: distance between the sun and the Earth. (150,000,000 km)

34.
(150,000,000 km)=93,205,680mi

35. Early Ideas about our Solar System
Heliocentric
Geocentric

36. Early Ideas about our Solar System
Intro Video for Heliocentric & Geocentric Models

38. Heliocentric Model

39. The idea that the objects in the solar system revolve around the Sun.
Heliocentric Model
The idea that the objects in the solar system revolve around the Sun.
“Helios” in Greek = sun
(Made sense, sun rose the east and set in the west).

40. The idea that the objects in the solar system revolve around Earth.
Geocentric Model
The idea that the objects in the solar system revolve around Earth.
“Geo” in Greek= Earth

41. Geocentric Model

42. Geocentric Model

43. LISTEN… fill in the blanks on your notes. This is your WORD BANK
Geocentric
Heliocentric
Sun revolves around Earth
Galileo
Copernicus

44. For centuries people believed that ___________ revolved around ___________.
This was the ____________
Model.

45. __________was the first scientist to think that the sun was the center of the solar system.

46. _________ tested this theory, observing Jupiter and Venus.
_________ concluded that the sun was the center of the solar system.

47. This is called the _________ model.

49. deathisdefeated.ning.com

50. http://video. search. yahoo
deathisdefeated.ning.com

51. Universe
Milky Way Galaxy
Solar System
deathisdefeated.ning.com
Earth