1. Inside Earth Chapter 5.3 Pages 154-158
Sedimentary Rocks
Inside Earth Chapter 5.3
Pages

2. Weathering: break down rocks on the surface into sediments
Sediments : pieces of material that come from rocks or living things.

3. Mechanical Chemical Weathering Freezing & thawing Growth of plants
(pg 213)
Chemical
(pg 215)
Freezing & thawing
Growth of plants
Animal actions
Abrasion - sediments wear down exposed rock
Water (solution)
Oxygen (rust)
Carbon Dioxide
Acid Rain - pollutants in the air make water vapor acidic.
Carbon Dioxide dissolves in rain water, sinks into soil, forms Carbonic Acid

4. Running water or wind carries away loose sediments.
Erosion
Running water or wind carries away loose sediments.

6. Which is a form of Chemical weathering?1
Abrasion 2
Plants 3
Freezing & Thawing 4
Oxygen D

7. When sediments are “dropped off” by the water or wind carrying it.
Deposition
When sediments are “dropped off” by the water or wind carrying it.

8. Compaction
Pressing rocks together due to gravity and the weight of overlying layers.
Layers build up over time
As layers form on top, press down and compact layers below
Creates visible layers

10. Cementation
When dissolved minerals crystallize and glue sediment together.
Occurs during compaction
Dissolved minerals fill in the spaces between sediments.

11. When sediment is carried away by wind or water.1
Compaction 2
Erosion 3
Deposition 4
Weathering B

12. When layers of sediment are pressed together by gravity.1
Compaction 2
Cementation 3
Deposition 4
Weathering A

13. Sedimentary rocks are formed by…1
Human interactions 2
Cooling of molten material 3
Physical and chemical processes 4
Metamorphism C

14. Clastic Rocks
Sedimentary rock from rock fragments that are squeezed together.
Shale
Sandstone
Conglomerate
(Breccia)

15. Clastic Rocks Shale Common rock that forms from clay
Thin, flat layers that split easily
Smooth

16. Clastic Rocks Sandstone Forms from sand that is compacted and cemented
Mostly made of quartz
Somewhat porous

17. Conglomerate / Breccia
Clastic Rocks
Conglomerate / Breccia
Mixture of grain sizes
Conglomerate has more rounded grains
Breccia has sharp-edged grains

18. Which process forms Sedimentary rock after it is deposited?1
Mechanical Weathering 2
Erosion 3
Compaction 4
Chemical Weathering C

19. Coal Limestone Organic Rocks
The remains of plants and animals deposited in thick layers.
Coal
From plants buried in swamps
Compacted over millions of years
Limestone
From shells of aquatic animals (Calcite)
Some shells are compacted, some dissolve
Dissolved calcite cements it together.

23. Chemical Rocks Forms when dissolved minerals crystallize. Rock Salt
Forms from evaporation.
Made of halite.
Gypsum
Limestone
Forms from dissolved calcite.

24. Which of these is an Organic rock?1
Shale 2
Sandstone 3
Conglomerate 4
Limestone D

25. Which of these is a Chemical rock?1
Shale 2
Sandstone 3
Conglomerate 4
Limestone D

26. Uses of Sed. Rocks
Sandstone and Limestone are commonly used as building material
Easily cut into slabs
Limestone is used in cement.

28. Which of these does NOT describe how Sedimentary rocks are classified?1
What it’s made of 2
Size of grains 3
If it was compacted 4
If it crystallized B