1. Rocks ~Sedimentary rocks form from earlier rocks~

2. Vocabulary FOSSILS SEDIMENTS
The remains or trace of an organism from long ago.
SEDIMENTS
Materials that settle out of water or air.

3. Develop when loose material gets pressed/cemented together
Sedimentary rocks…
sediment +
compaction/
cementation
Mineral
“cement” =
sedimentary
rock
Conglomerate
Limestone
Develop when loose material gets pressed/cemented together

4. What can make up sediment?
Loose
rock pieces
Loose
mineral pieces
Plant
pieces
Animal
remains
How do sedimentary rocks form?
From of sediment that build up on OR

5. Sedimentary rocks from plants??
Coal is made up of plant remains:
dead wood, bark, leaves, stems, and roots.
As plants die, they form layers. Then layers of other sediment are buried on top of plant layers, compacting and cementing into coal.

6. Sedimentary rocks from shells??
Limestone is made up of shells and skeletons of ocean organisms.
When organisms die, the shells and skeletons settle on the ocean floor and make layers. Over time the layers are buried, pressed, and cemented together, making limestone.

7. Sedimentary rocks tell us about the past:
Fossils
Mud Cracks
Crossbeds
Ripples
show that rocks formed where the area was
very wet , followed by a dry period.
of water creatures can tell us that the area was
covered by a lake or ocean long ago.
show us the direction sand dunes
and sand bars were moving
show water and wind
direction and movement

8. Which rocks are sedimentary?
Drag the green ovals over the sedimentary rocks.
Why?
Shale
Limestone
Chert
Breccia
Marble
Quartzite
Iron Ore
Scoria
Sandstone
Pegmatite

9. Design your own sedimentary rock:

10. Rocks in the World Around Us

11. More on the Rock Cycle ROCK CYCLE TEST Rock Cycle
Rock Cycle