Grade 12 STEM_Lesson2_Solar System origin.pptx

Solar System

1. The Origin of the Solar System STEM/ABM Earth Science G11

2. Targets describe and illustrate the different hypothesis explaining the origin of the solar system; and m anifest the value of excellence while doing the activity

3. Colossians 3:23  “ Whatever you do, work heartily, as for the Lord and not for men…”

4. Vocabulary A planetesimal is an object formed from dust, rock, and other materials.

5. Theories Nebula Theory Accretion Theory Planetesimal Theory Tidal Theory Proto-Planet Theory Capture Theory

6. HOME GROUP

7. Theory Flip Card FRONT DRAWING BACK Theory details

8. Theory Flip Card FRONT Planetesimal Theory Name of the Theory Date of Formulation Proponents Summary / Description

9. Theories Nebula Theory Accretion Theory Planetesimal Theory Tidal Theory Proto-Planet Theory Capture Theory

10. Jigsaw Discussion 5 minutes: Go to the Expert Group 25 minutes: Go to your original (Home) group for discussion. Leader: facilitator and evaluator Criteria: Preparedness, Content, Speaks Clearly, Posture & Eye Contact

11. Nebula Theory 1796 Pierre-Simon Laplace Monistic theory (Single S ystem )

12. Nebula Theory began from a huge cloud of gas which was spinning slowly t his cloud collapsed under gravity a s it collapsed, it started spinning more quickly and began to flatten to conserve angular momentum p lanets were formed by the condensation of annular rings around the Sun

13. Nebula Theory It all began from a huge cloud of gas which was spinning slowly. This cloud collapsed under gravity. As it collapsed, it started spinning more quickly and began to flatten to conserve angular momentum. Planets were formed by the condensation of annular rings around the Sun.

14. Tidal Theory 1917 James Jeans Dualistic theory

15. Tidal Theory A star passed close to the sun where the tidal force or the secondary effect of gravitational pull between the passing star and sun drew large amounts of matter out of the sun and the passing star. Some of the drawn out matter quickly cooled to become PLANETESIMALS.

16. Accretion Theory 1944 Otto Schmidt and Raymond Arthur Lyttleton (modification)

17. Accretion Theory Dualistic T heory  the sun passed through a huge cloud of gas and acquired matter to form planets— line accretion

18. Proto-planet Theory 1960 Sir William Hunter McCrea Monistic Theory

19. Proto-planet Theory a cloud of gas and dust that was to form a galactic cluster. Due to hypersonic turbulence , gas streams collided and produced regions of higher-than-average density ( floccules ). When a large aggregation formed, it attracted other floccules in its region so producing a PROTOSTAR .

20. Capture Theory 1964 Michael Mark Woolfson

21. Capture Theory an interaction between a condensed solar mass star ( SUN ) and a protostar of lesser mass t he protostar entered the Roche limit and was disintegrated to form bodies like PLANETS g ives a planar structure but highly elliptical orbits

22. Planetesimal Theory 1941  Viktor Safronov

23. Planetesimal Theory when a planetary system is forming , there is a proto-planetary disk with materials from the nebulae from which the system came t his material is gradually pulled together by gravity to form small chunks that get larger and larger until they form PLANETESIMALS

24. ASSIGNMENT Enumerate the different factors that will make a planet habitable .

25. References http://www.brighthub.com/science/space/articles/37831.aspx#imgn_0 https://www.teachervision.com/solar-system/printable/61998.html https://www.teachervision.com/tv/printables/dk_solar-system.pdf http://astrogeo.oxfordjournals.org/content/41/1/1.12.full