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1) NUMBER OF PLANETS- nine
2) PLANET CHARACTERISTICS
N- gaseous, no solid core
U- rings, same size as N
S- ice crystal rings
J- 1000x earth size, ammonia hydrogen
atmos.
M- fastest orbit, barren surface
V- hot, poisonous atmos.
MER- red, hostile, desolate
3) SPACE TRAVEL PIECES TOGETHER…
details of earth’s origin
4) IMPORTANCE OF MOON’S CRATORSthese tell the history of earth and the solar
system
5) OTHER CRATOR LOCATIONSeverywhere
6) MOON’S CRATORS ARE REMNANTS
OF… impacts of meteorites and asteroid
collisions
7) SOLAR SYSTEM CREATION…
* all matter in a huge dense mass
* sun at centre
* sun is heat source
* planetoids form through collisions
*100,000,000,000 collisions
*some planetoids broke up after collisions
*others fused by heat of impact & grew
larger
8) “GAPING SCARS’ ARE…collision scars
with asteroids and meteorites
9) EARTH AS A GIANT VACUUM
CLEANER…gravity resulting from its huge size
drew in debris and grew larger
10) TIME FOR EARTH TO BECOME ITS
PRESENT SIZE… 5,000,000,000 years
11) HOW HOT WAS EARTH… 2,000 c
12) ORIGINS OF…
VOLCANISM…earth’s inner heat sent magma
upward. HEAT…pressure of rock on the outer
crust squeezing inner layers. CRUST…lighter
crystals “migrate” to the surface, cool and
harden forming a crust.
13) ORIGIN OF ATMOSPHERIC
GASES…magma
14) FORCES STILL AT WORK? yes
15) fascinating craters!
16) METEORITE IMPACT CRATERS
SHOW…the earth was created through the
collision scenario
17) WHY ARE MOON’S CRATERS MORE
VISIBLE… no water to erode and no
vegetation to mask their location and identity
18) New Quebec” crater …round, deep,
steep sided and lipped
19) ORIGIN OF “MULTI RINGED”
CRATERS…rebound of the liquefied rock after
collision with the meteorite leaves a large
mound in the middle which erodes to a ring
and can then fill with water forming a circle of
lakes
20) IS THE ROCK LAVA? no
21) IMPORTANCE OF METEORITE
FRAGMENTS…these “tell” the history of the
universe and of the planets beyond
22) AMOUNT ADDED TO EARTH EACH
YEAR…100 tonnes
23) ORIGIN OF THE OCEANS… vapour
condensed from magma gases in clouds falls as
rain and fills depressions on earth’s surface
24) ENTIRE EARTH COVERED WITH
WATER? No
25) OTHER PLACES WHERE WATER
COLLLECTED…caverns, lakes, rivers,
groundwater
26) HOW EARTH’S SOLID SURFACE
FORMED…cooling and hardening of the rocks
approx. 4,000,000 tears ago
27) IMPORTANCES OF WATER…*where life
began *most common substance *shapes the
planet and the surface *provides nutrients for
human, animal and plant life forms
28) MOVEMENTS CREATING EARTH’S
INNER HEAT…tectonics
29) SKIP
30) PLANTS’ JOB…convert co2 to o2
(carbon dioxide to oxygen) thus spreading
atmospheric gases around *to become a source
of other plants’ nutrients TIME… hundreds of
millions of years
32) DINOSAURS “MEETING THEIR
MAKER”…huge meteorite collision altered the
atmosphere by adding dust, thus cooling the
climate killing the dinosaurs and about 95% of
all life on earth, approx. 65,000,000 years ago
WHO TOOK OVER…mammals… humans, our
pets and wildlife