our universe (how we are much tinier and younger than we earthlings think.)
Post on 13-Jan-2016
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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.
PLANET EARTH
• 4.6 billion years ago, Earth was a ball of molten rock.
• http://ircamera.as.arizona.edu/NatSci102/NatSci102/lectures/earth.htm
• http://news.bbc.co.uk/2/hi/science/nature/7533964.stm
PLANET EARTH
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_tectonics/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/tectonics.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/tectonic.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/animations/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.
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