
DKUCH
This book was created and published on StoryJumper™
©2010 StoryJumper, Inc. All rights reserved.
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Theory, through observations and
calculations.








temperature of fusion, and
then the sun formed out of the
largest collection of mass at the
center of the solar nebula.

A section of the nebula formed a dense metallic
core with a thin silicate crust on the surface. As
asteroids hit the surface, internal lava flowed out
and formed a new crust. Over time, Mercury's core
cooled down and shrunk. Because of this, the outer
crust cracked. Then, a new wave of lava came and
replaced the old crust. Meteorites continued to hit,
creating a dusty surface. On occasion, asteroids hit
and added to the creation of the craters that are on
the planet.







Venus warmed from the inside, and separated
into layers. Because Venus is closer to the sun
than Earth, the atmosphere formed differently
than the Earth's did. After that, Venus then
started cooling down. The crust began to
thicken. The hardening crust prevented the
recycling of the atmosphere. To this day Venus
continues to cool.

Earth formed from the same nebula cloud of
gas and dust that the Sun formed from.
Planet Earth has changed a lot over time. If
Earth was still as it was long ago, it would be
impossible for human life to survive on it. Like
all the other planets, earth was the result of a
solar nebula that collapsed from the
formation of the sun. The molten center of the
Earth cooled down to form a crust that
allowed water to be created. Lastly, the
atmosphere of the earth formed from volcanic
activity and escaping gasses.




enter text here
Mars grew very quickly. It then formed
from titanic collisions between large
planetary objects. Unlike Earth, Mars
didn't feed off other planetoids. This is
how it stayed small and intact.



Large gas planets like Jupiter began forming by gaining solid
materials at a very fast pace. The formation of gaseous planets
started when solid objects hit each other and stick together. They
then grow in size. Once it grew to a certain size, it became big
enough to create a gravitational pull on the surrounding gases.
This is why Jupiter is known as a "gas giant."




Like all other planets, Saturn was formed from the solar
nebula. Saturn was formed when gases and icy chunks of
rock came together in the outer regions of the solar
system. It then formed into a larger ball and attracted
more and more gases until it became a planet. It's made
of mostly gases, mainly hydrogen and helium. The
formation of the rings of Saturn has remained unknown.
Some think the rings are dust particles that were thrown
into space around Saturn when something hit the surface
of the planet. Others think that the rings are from a
moon of Saturn that broke into pieces and started
orbiting around the planet.




Uranus is a giant planet. It is about 15 times the size of Earth.
Because of this, it is hard to say exactly how this planet
formed. Just like many planets, it has formed over hundreds
of years with rocks and gases. Also, Uranus is said to be a
"giant ice ball" because it's core is thought to be made up of
rock solid ice.



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DKUCH
This book was created and published on StoryJumper™
©2010 StoryJumper, Inc. All rights reserved.
Publish your own children's book:
www.storyjumper.com


Theory, through observations and
calculations.








temperature of fusion, and
then the sun formed out of the
largest collection of mass at the
center of the solar nebula.

A section of the nebula formed a dense metallic
core with a thin silicate crust on the surface. As
asteroids hit the surface, internal lava flowed out
and formed a new crust. Over time, Mercury's core
cooled down and shrunk. Because of this, the outer
crust cracked. Then, a new wave of lava came and
replaced the old crust. Meteorites continued to hit,
creating a dusty surface. On occasion, asteroids hit
and added to the creation of the craters that are on
the planet.






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