if i had to choose to do something to do for the rest of my life, i would try yo be the best army ranger in the world, i would try to work my way up in rank and try to be remembered as the greatest general ever.

it's the end of the world as we know it

i don't think we have to worry about any solar flares because if we haven't been destroyed by one yet, then we probably never will. and ma powell says that it probably wont happen so thats another good reason.

asteroids

i think we should be fairly concerned because if we know that an asteroid is comming, we can evacuate the people it is going to affect.
take tanguska for example, if we would have known that a huge bomb thing was going to hit, we could have gotton the people to saftey. we could completly avoid the affects of a shoemaker levy 9 asteroid because if we know it's coming, we could possibly destroy it or evacuate the people.
On the other hand, they say once every million years a football field or larger sized asteroid threatens earth. and if we can't fix that problem like they did on armageddon, then we are screwed.

pangea-means one land, scientist believe that the continents were once one big land mass
sea floor spreading- two sea floors are spreading apart makes the ocean bigger.
plate boundries- the edges of the plates
the ring of fire-where all of the volcanoes are
the mid-ocean ridge-the biggest maountain range in the world, tallest too, and it's underground
shifting north and south pole-north and south pole switch once every 100,000 years don't know why

extinct volcanoes on the moon tell us that the moon's crust isn't moving
active volcanoes on mars tell us that the crust is still moving

Dubo-shifts 4.26 mm a year
HILO-35.77mm year
KELY-11.23mm a year
HOFN-14.87 mm a year

it tells us they are slowely moving

rotation of the earth-caused the earth to wobble slightly on it's axes, also shortened the day by 2.6 micro seconds


shape of the earth - The momentum of the water displaced by tectonic uplift had also dragged massive slabs of rock, each weighing millions of tons, as far as 10 km (7 mi) across the seabed


shape of ocean where it originated there was a sudden vertical rise in the sea bed.


energy released-the same as 26.3 megatons of tnt.

three pieces of evidence for his idea for plate techtonics
1. the continents fit together like a puzzle
2. found fossils of animals that couldnot have survived unless the contenents were connected
3. found fossils of tropical plants in antarctica

mercury movie and facts

http://www.youtube.com/watch?v=Cfl7dlEowoA&feature=related
it's the closest planet to the sun
it takes 88 days to orbit the sun
it has no moons and it's heavy
lots of craters
it has a heavy iron core and sillicate surface

info on the rest of the moons

a( periods of the four moons
b( the graphical pictures attained
c( difficulty gallileo had seeing it
c( how mini system helped gallileo form heliocentric views
Lo takes 25 days to travel around jupiter, Europa takes 3 days to travel around, Ganymede takes 7 days, and Callisto takes 15 days
Thy graphics, like the wave lengths, show the shape of the orbits, the more symmetric the wavelengths the more circular the orbits are. To gallileo, it would have looked like the moons were just moving back and forth. seeing the moons go around jupiter gave the idea to gallileo that a solar system could revolve around the sun

data on jupiter's moon

Callistio is the furthest moon from jupiter. we can tell because it has the highest waves. it also has a very circular orbit, i can tell because the wave shapes are very even.
Lo is the closest moon to jupiter. we can tell because the wavelengths are very short. it's orbit is not circular because the wavelengths are sparratic.

i thought the lab was fun. i learned how mass affects the orbits. in the clip i noticed there is a huge diff in size of planets. but venus and earth are the same size.