This preview shows page 1. Sign up to view the full content.
Unformatted text preview: 63th to 65th)
– Proterozoic (2,500 – 543 Ma)
– Archaean (3,800 – 2,500 Ma)
– Hadean (4,500 – 3,800 Ma)
Your life span = 0.0002 inches
Human hair = 0.001 inches BIO1130 Organismal Biology
Université d’Ottawa / University of Ottawa 5
10:22 AM Galaxies BIO1130 Organismal Biology
Université d’Ottawa / University of Ottawa BIO1130 Organismal Biology 6
10:22 AM Page 2 Hadean eon Nat Geo Sun video Our Solar system
1. 98% of mass of solar system is in Sun.
Jupiter onwards are broken gas planets. 9. 2. 8. 7. 6. planets are forming . 5. 4.
1. 2. 3. gas planets can simply absorb meteors protecting
smaller planets. huge asteroid belt surrounded systm © NASA BIO1130 Organismal Biology this is what pluto is. 7 Université d’Ottawa / University of Ottawa 10:22 AM Late heavy Bombardment
The Nice Model asteroids from away had composition of inner planets 4.1 billion years ago, 4 big planets circulated on out
picked up debree from asteroid belt. orbits started to
change. gained weight, pulled away from sun. olipticl
3.8 billion years ago, jupiter and saturn reach critical
mass and are out of sync 2-1 (jupiter goes around sn Jupiter Jupiter Saturn Jupiter twice as much) extremely close together at point.
10:22 AM huge gravitational force on eachother and sling shot
eachother and jump positions in orbit. gravitational
effect on neptune and uranus. pulled eachother
apart, separate and move near eachother. dominos.
sets zone crazy, all shoot around, asteroid belt
dissapear. pushed neptune past uranus. tiny asteroid
belt remaining. explains inner planet asteroids. only way water can be in liquid form is if in speciﬁc Habitable zone distance to sun. earth is perfect size. volcanic activity
released methane. ensured water remained in atmos
known as goldilocks zone (perfect zone) BIO1130 Organismal Biology Figure 3.8 Université d’Ottawa / University of Ottawa BIO1130 Organismal Biology 9
10:22 AM Page 3 Hadean eon Hadean eon
Stabilizing phase Orion nubula (NASA)
BIO1130 Organismal B...
View Full Document
- Fall '08