Name ______________________________ Class ___________________ Date __________________
Skills Worksheet
Directed Reading 6-3
Section: Sedimentary Rock
1. Define sediment.
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2. What three factors determine the characteristics of sedimentary rock?
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FORMATION OF SEDIMENTARY ROCKS
3. How are newly formed sediments transported to new locations?
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4. What determines the composition of sediment?
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5. What happens to sediment as it is moved from one place to another?
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Name ______________________________ Class ___________________ Date __________________
Directed Reading continued
7. The process in which the volume and porosity of a sediment are reduced by
the weight and pressure of overlying sediments is called
______________________.
8. The process in which minerals precipitate into pore spaces between sediment grains
and bind sediments together to form rock is called ______________________.
CHEMICAL SEDIMENTARY ROCK
_____ 9. Sedimentary rock that forms when the ions from dissolved minerals
precipitate out of water because of the changing concentration of
chemicals is called
a. organic sedimentary rock.
b. chemical sedimentary rock.
c. clastic sedimentary rock.
d. elastic sedimentary rock.
_____ 10. One reason that minerals precipitate is due to
a. evaporation.
b. compaction.
c. cementation.
d. condensation.
_____ 12. Two examples of evaporites are
a. coal and granite.
b. gypsum and halite.
c. chalk and limestone.
d. sandstone and shale.
_____ 13. The Bonneville Salt Flats near the Great Salt Lake in Utah are a good
example of
a. evaporite deposits.
b. coal deposits.
c. limestone deposits.
d. shale deposits.
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Rocks
Name ______________________________ Class ___________________ Date __________________
Directed Reading continued
ORGANIC SEDIMENTARY ROCKS
Use the terms from the following list to complete the sentences below. Each term
may be used only once. Some terms may not be used.
chalk
calcite
carbon
coral
coal
organic sedimentary rock
limestone
14. Sedimentary rock that forms from the remains of plants and animals is called
______________________________________________________________ .
15. Some limestones and ______________________ are examples of organic
sedimentary rocks.
16. Coal forms from plant remains that are buried before they decay and are then
compacted into matter that is composed mainly of ______________________.
17. Organic limestone forms when marine organisms such as coral, clams, oysters,
and plankton remove chemical components of the minerals
______________________ and aragonite from sea water.
18. When marine organisms die, their shells eventually become ______________.
19. An example of limestone made up of the shells of tiny, one-celled marine
organisms that settle to the ocean floor is ______________________.
CLASTIC SEDIMENTARY ROCK
In the space provided, write the letter of the description that best matches the term
or phrase.
_____ 20. clastic
sedimentary rock
_____ 21. conglomerate
_____ 22. breccia
_____ 23. sandstone
_____ 24. quartz
_____ 25. shale
a. a major component of most sandstones
b. rock with angular fragments, sharp corners;
range in size from 2 mm to boulders
c. sedimentary rock; forms when fragments of
rocks are compacted or cemented together
d. rock made up of sand-sized grains cemented
together
e. rock that consists of clay-sized particles that
are cemented and compacted
f. rounded fragments sized from 2 mm to
boulders
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Name ______________________________ Class ___________________ Date __________________
Directed Reading continued
CHARACTERISTICS OF CLASTIC SEDIMENTS
26. Name the four agents that transport sediments.
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28. What two factors determine the physical characteristics of sediments?
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29. Define sorting.
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32. In general, how do sediment particles that travel long distances differ from
those that have traveled short distances?
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Rocks
Name ______________________________ Class ___________________ Date __________________
SEDIMENTARY ROCK FEATURES
In the space provided, write the letter of the description that best matches the term
or phrase.
_____ 33. depositional
environment
_____ 34. stratification
_____ 35. bed
_____ 36. massive bed
_____ 37. cross-bed
_____ 38. graded bedding
_____ 39. reverse grading
a. a stratified layer
b. a bed characterized by slanting layers
c. a type of stratification in which various sizes
and kinds of materials are deposited in one
layer
d. a bed with no internal structure
e. a type of stratification in which the smallest
grains are on the bottom and larger grains
are on top
f. the layering of sedimentary rock that occurs
when the conditions of deposition change
g. the setting in which sediment is deposited
40. A sedimentary rock feature caused by the action of wind or water on sand is
called a(n) ______________________.
41. A sedimentary rock feature that forms when a muddy deposit dries and shrinks
is called a(n) ______________________.
42. How are fossils formed?
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43. How are concretions formed?
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44. How are geodes formed?
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Rocks