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We want to know how we get from "Boulder's to Bits". Check out this animation that gives us the LD.

=In your science Journal: = Can you make a cause and effect chart? How many causes and effects can you find? What was the physical weathering? What was the biological weathering?

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= =What are the three types of weathering?= =

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> > http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/rock_cycle_2.shtml >  > How is crushing a alka-selzer like physical weathering? How is adding water like physical weathering?  > > > > > >  > > > 1. Which of the following is NOT considered an agent of physical weathering? > > a. abrasion > b. carbonation > c. frost action > d. organic activity > > > > 2. What causes most chemical weathering? > > a. abrasion > b. roots of plants > c. sulfuric acid > d. water =Physical or Chemical?=
 * What are the 3 types of weathering?
 * What information is true?
 * Did you find any information that was incorrect? [[file:LetsGetPhysical.ppt]]
 * Create a 3 column chart that describes each of the types of weathering.

PLANT ROOTS PUSHING THROUGH ROCKS, CRACKING THEM

WATER CONTINUALLY FREEZING AND THAWING

PLANT ROOTS PRODUCE WEAK ACIDS AND SLOWLY DISSOLVE ROCKS

ROCKS GRINDING AGAINST ONE ANOTHER AND ROCK PARTICLES BREAK OFF

ANIMALS BURROW IN THE GROUND AND BREAK PARTICLES OFF OF ROCKS

ROCKS CONTINUALLY HEAT AND COOL AND ROCKS BREAK CRACK AND BREAK APART

ACID RAIN EATS AWAY ROCKS

OXYGEN COMBINES WITH WATER AND IRON CONTAINING ROCKS AND BREAKS DOWN

CARBONIC ACID IS CREATED WHEN CARBON DIOXIDE MIXES WITH WATER AND SLOWLY DISSOLVES ROCKS

RAINWATER SEEPS INTO THE CRACKS OF ROCKS AND SLOWLY DISSOLVES THEM