Sec. 3

sediment• small, solid pieces

of material that come from rocks or living things

Processes that change sediment sedimentary rock

1. erosion= running water or wind loosen & carry away pieces of rock

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Processes that change sediment sedimentary rock

2. deposition= sediment settles out of water or wind ↓

Processes that change sediment sedimentary rock

3. compaction= presses sediment together

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Processes that change sediment sedimentary rock

4. cementation= dissolved minerals crystallize & glue sediment together

Types of sedimentary rock

clastic rock

• rock fragments squeezed together

shalesandstone

conglomerate• clastic rock made up of large

fragments w/ rounded edges

breccia• clastic rock made up of large

fragments w/ sharp edges

organic rock • remains of plants & animals

coal limestone

chemical rock • minerals dissolved in solution

crystallize

rock salt limestone

Uses of sedimentary

rocks

• cement- limestone

• arrowheads - flint

• White House – sandstone

http://www.learner.org/interactives/rockcycle/types3.html

HOMEWORKBring ingredient for edible rocks on Tues.

#1-4 1 box of plain Rice Krispies cereal#5-8 2 bags of mini marshmallows#9-15 4 stick pack of butter#16-22 1 bag of M&M’s (plain, peanut, or peanut butter)#23-26 1 bag of chocolate chips#27-30 1 container of sprinkles#31-33 1 bag of peanut butter chips or

butterscotch chips

Activity-Sedimentary SandwichLayer of sandwich Layer of geologic time

scale- description

Bottom slice of bread (sand)

Precambrian Era- jellyfish fossils

Peanut butter (mud)

Paleozoic Era- fish fossils

Jelly (old decaying plants)

Mesozoic Era- dinosaur fossils

2nd slice of bread Cenozoic Era- flowering plants fossils