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 https://www.youtube.com/watch?v=Bvrz
M-BavDg
 …..over
4 billion years ago.
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.
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?
1.
2.
1. Volcano steam
2. Ice packed asteroids
not too much water
here.
WATER!
What’s the molecular formula for
water?
H2O
What’s the molecular formula for
water?
How could NASA answer this question?
http://www.youtube.com/watch?v=KyktvC
7w7Js
:
http://www.youtube.com/watch?v=gwinFP
8_qIM&feature=related
 And
how did
we get a photo
of a rover
landing on
Mars?
 https://www.youtube.com/watch?v=Esj5j
uUzhpU
When they
get here,
they can
sample
Mars crust
for signs of
life!
http://www.nasa.gov/mission_pages/MR
O/multimedia/pia14472.html
CONNECTED
WHOLE
FORMING
THINGS
SET
A COMPLEX
A SET OF CONNECTED THINGS
FORMING A COMPLEX WHOLE
CONNECTED
WHOLE
FORMING
THINGS
SET
A COMPLEX
A SET OF CONNECTED THINGS
FORMING A COMPLEX WHOLE
 VENTILATION
SYSTEM
 ORGAN
SYSTEM
 AIRBRUSH
SYSTEM
 COMPUTER
SYSTEMS
A SET OF CONNECTED THINGS
FORMING A COMPLEX WHOLE
 VENTILATION
SYSTEM
 ORGAN
SYSTEM
 AIRBRUSH
SYSTEM
 COMPUTER
SYSTEMS
A SET OF CONNECTED THINGS
FORMING A COMPLEX WHOLE
 VENTILATION
SYSTEM
 ORGAN
SYSTEM
 AIRBRUSH
SYSTEM
 COMPUTER
SYSTEMS
IS THE EARTH A SYSTEM?
EARTH
IS A
SYSTEM.
EARTH
IS A
SYSTEM.
EARTH
IS A
SYSTEM.
YES…
EARTH
IS A
SYSTEM.
not
as
complex..
but yes.
EARTH
IS A
CLOSED
SYSTEM.
• Water (H2O)
can’t escape
http://www.space.com/29831-waterescapes-a-warm-planet-will-earthbecome-like-mars.html
 EARTH
IS A
CLOSED
SYSTEM.
• Water (H2O)
can’t escape
our layered
atmosphere
YES…
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...
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!
MARS: “OPEN”
SYSTEM
EARTH: “CLOSED” SYSTEM


IRON CORE protects our
layered atmosphere
Layered atmosphere keeps
water on Earth!


NO IRON CORE—lost
atmosphere
No layered atmosphere to
keep water on Mars
Students draw a 4-fold graphic
organizer on the water cycle.
Students draw a 4-fold graphic
organizer on the water cycle.
Due Monday..
 Video
notes