Tuesday, May 8, 2012

Moving Rocks

Photograph of Hell's Gate, British Columbia
Photograph of Hell's Gate, British Columbia (Photo credit: Wikipedia)
Your house might crack if there is an earthquake.     Two rocks were stuck together and then somehow they got splitted up.  Valleys can be made when they are squished down in the middle.

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Wednesday, May 2, 2012

Thursday, April 5, 2012

Crystals

Crystals are made from hot water and little bits of rock in the earth.

Tuesday, April 3, 2012

Rocks

When the lava is in the ground it is called magma.  But when it explodes out of the volcano it is called lava.  If you find a colored rock that is sticking up with a little bit of black on it and if you break it open they will have crystal in it. 

Thursday, March 22, 2012

Blowing up rocks

You make an explosion on the top of the ground.  Shockwaves goes down into the ground and it bounces off one of the rocks in the ground and bounces back up to the top.  Then they can tell what the rocks look like underneath.  This is a seismograph.

Thursday, March 1, 2012