Download OUR UNIVERSE

OUR UNIVERSE
(How we are much tinier and
younger than we Earthlings think.)
THE BIG BANG
• About 14 billion years ago the entire universe
was contained in a bubble that was smaller
than a period.
• . (like this, and this is a screen period, a pencil
period is even smaller)
• All the universal energy we have today was in
that bubble.
THE BUBBLE EXPLODED!!!!!
• All that energy was unleashed & space, time,
and matter were born.
ALL THAT ENERGY EXPANDED
• It is still expanding, just at a slower rate.
TIMELINE
• http://www.pbs.org/wnet/hawking/universes
/html/bang.html
• http://patrickgrant.com/BBTL.htm
• http://www.pbs.org/deepspace/timeline/
OUR SOLAR SYSTEM
• Our solar system was formed about 4.6 billion years ago.
• It includes our sun and the planets.
• There used to be 9 planets, but the big scientists axed Pluto.
I’m not happy about that.
PLANETEARTH
EARTH
PLANET
• 4.6 billion years ago, Earth was a ball of
molten rock.
• http://ircamera.as.arizona.edu/NatSci102/Nat
Sci102/lectures/earth.htm
• http://news.bbc.co.uk/2/hi/science/nature/75
33964.stm
PLANET EARTH
• As the ball of lava cooled, it developed a hard
crust.
PLANET EARTH
• Heavy metals sank toward the core. Iron formed into a ball at
the core.
PLANET EARTH
• Heat from the core makes the molten rock
convect (move in a circular motion).
• http://earthguide.ucsd.edu/eoc/teachers/t_te
ctonics/p_convection2.html
PLANET EARTH
• This convection (circular movement) makes
the crust move.
• http://www.physics.upenn.edu/~garyb/Astro3
/Geology/tectonics_convect_of_mantle.htm
• tectonics_convect_of_mantle.swf
PLATE TECTONICS
• The crust is not one piece. It is broken in to
sections called plates.
• These plates are always moving.
• http://www.ucmp.berkeley.edu/geology/tecto
nics.html
PLATE TECTONICS
When they crash against one another one plate
sinks into the molten lava. The other plate is
raised up.
These collisions can make mountains, volcanoes.
These collisions form earthquakes.
http://www.moorlandschool.co.uk/earth/tecton
ic.htm#Scotland
PLATE TECTONICS
• Some plates are moving away from each
other. The mantle fills in the empty space.
Earthquakes and volcanoes happen here, as
well.
• http://www.tectonics.caltech.edu/outreach/a
nimations/himalayas_youtube.html
• http://www.iris.edu/hq/programs/education_
and_outreach/animations#hotspot
PLATE TECTONICS
• Some plates slide back and forth against each
other.
• These slides create lots of earthquakes.
CONCLUSION
• Earth is always moving and changing.
• The activity at the core of our planet affects
how the surface of our planet behaves and
looks.
• These changes can be awesome, but they are
simply a part of an ever changing universe.