1. How did water get on Earth?

2. Scientist think Earth has had water ever since our moon was formed.
…..over 4 billion years ago.

3. Today, our moon is 240,000 miles away, but when it formed over 4 billion years ago, it looked 3 times larger in the sky.

4. Today, our moon is 240,000 miles away, but when it formed over 4 billion years ago, it looked 3 times larger in the sky.
How close was our earliest moon?

5. How did water get on Earth? Explain TWO (2) theories:1. 2.

6. How did water get on Earth? Explain TWO (2) theories:
1. Volcano steam
2. Ice packed asteroids

7. Too bad about Mars though…

8. Although NASA recently discovered good evidence that Mars does contain a bit of water.

9. Too bad about Mars though…
not too much water here.

10. We learned earlier this year that meteor/asteroid bombardment helped create our rocky planets closest to the sun.

11. The video we saw showed how these space rocks contain ingredients necessary for life.
WATER!

12. What’s the molecular formula for water?
The movie we saw showed how these space rocks contain ingredients necessary for life.
What’s the molecular formula for water?

13. What’s the molecular formula for water?
The movie we saw showed how these space rocks contain ingredients necessary for life.
H2O
What’s the molecular formula for water?

14. What’s the molecular formula for water?
The movie we saw showed how these space rocks contain ingredients necessary for life.
H2O
What’s the molecular formula for water?

15. Today, we want to know if Mars water has any signs of life.
How could NASA answer this question?

16. How did we FIRST get our roving robots to land safely on Mars?

17. How did the newest rover “Curiosity” land on Mars:

18. Whaaaa?
And how did we get a photo of a rover landing on Mars?

19. Let’s see the high-definition!!!!!
MISSION CONTROL
ACTUAL FOOTAGE

20. Anyways, these rovers have been travelling and sampling on Mars.

21. Anyways, these rovers have been travelling and sampling on Mars.

22. Anyways, these rovers have been travelling and sampling on Mars.

23. Anyways, these rovers have been travelling and sampling on Mars.
When they get here, they can sample Mars crust for signs of life!

24. HOW COME EARTH HAS LOTS of WATER & MARS HAS HARDLY ANY?

25. WHAT IS A “SYSTEM?”

26. WHAT IS A “SYSTEM?”
CONNECTED
A SET of
WHOLE
THINGS
A COMPLEX
FORMING

27. WHAT IS A “SYSTEM?” A SET OF CONNECTED THINGS FORMING A COMPLEX WHOLE

28. SOME SYSTEMS?

29. SOME SYSTEMS… VENTILATION SYSTEM ORGAN SYSTEM AIRBRUSH SYSTEM
A SET OF CONNECTED THINGS FORMING A COMPLEX WHOLE
VENTILATION SYSTEM
ORGAN SYSTEM
AIRBRUSH SYSTEM
COMPUTER SYSTEMS

30. SOME SYSTEMS… VENTILATION SYSTEM ORGAN SYSTEM AIRBRUSH SYSTEM
A SET OF CONNECTED THINGS FORMING A COMPLEX WHOLE
VENTILATION SYSTEM
ORGAN SYSTEM
AIRBRUSH SYSTEM
COMPUTER SYSTEMS

31. SOME SYSTEMS… VENTILATION SYSTEM ORGAN SYSTEM AIRBRUSH SYSTEM
A SET OF CONNECTED THINGS FORMING A COMPLEX WHOLE
VENTILATION SYSTEM
ORGAN SYSTEM
AIRBRUSH SYSTEM
COMPUTER SYSTEMS

32. Is Earth a set of connected things that make a complex whole?
Is the Earth a system?

33. Is Earth a set of connected things that make a complex whole?
EARTH IS A SYSTEM.

34. Is Earth a set of connected things that make a complex whole?
EARTH IS A SYSTEM.

35. Is Mars a system??
EARTH IS A SYSTEM.

36. Is Mars a system??
yes…
EARTH IS A SYSTEM.
not as complex.. but yes.

37. Both planets are each systems.
but what earth traps…
…mars let go!

38. Is Earth a set of connected things that make a complex whole?
EARTH IS A CLOSED SYSTEM.
Water (H2O) can’t escape

39. Is Earth a set of connected things that make a complex whole?
EARTH IS A CLOSED SYSTEM.
Water (H2O) can’t escape our layered atmosphere

40. Is Mars a system??
yes…
EARTH IS A SYSTEM.
Mars is an OPEN system!

41. Is Mars a system?? EARTH IS A SYSTEM. Mars is an OPEN system!
yes…
EARTH IS A SYSTEM.
Mars is an OPEN system!
Because its liquid outer core froze years ago...

42. Is Mars a system?? EARTH IS A SYSTEM. Mars is an OPEN system!
yes…
EARTH IS A SYSTEM.
Mars is an OPEN system!
Because its liquid outer core froze years ago & its protective atmosphere has been blown away by the sun’s rays!

43. We are lucky to be on Earth!
Mars: “open” system
Earth: “closed” system
IRON CORE protects our layered atmosphere
Layered atmosphere keeps water & air on Earth!
NO IRON CORE—lost atmosphere
No layered atmosphere to keep water & air on Mars

44. Water cycle refresher…
Students draw a 4-fold graphic organizer on the water cycle.

45. Water cycle refresher…
Students draw a 4-fold graphic organizer on the water cycle.

46. Water cycle vids
This last one is good for comics…

47. comic strip assignment
Due Monday..

48. Also show DiscoveryEd video on water cycle and run-off.
Video notes