Organic Chemistry worksheets
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What process breaks down rocks into sediments?
erosion
deposition
weathering
compaction
The Colorado river breaking down the rocks in the Grand Canyon over time is an example of....
mechanical weathering
chemical weathering
deposition
cementation
Which of these is a result of chemical weathering?
Bryce Canyon
Kilkee Cliffs in Ireland
The Grand Canyon
Luray Caverns
What type of weathering is represented in this diagram?
abrasion
ice wedging
carbonation
oxidation
Which two processes are a part of the lithification of sediments into sedimentary rocks?
weathering & erosion
compaction & cementation
deposition & erosion
cooling & cementation
How are sediments 'cemented' together?
precipitation of minerals
extreme heat melts sediments
squeezing together under pressure
cooling of magma or lava
Clastic sedimentary rocks are classified according to...
color
location of formation
grain size
mineral composition
Which of the following is NOT an example of a clastic sedimentary rock?
limestone
conglomerate
shale
sandstone
A sedimentary rock made of different sized rounded sediments compacted together.
shale
sandstone
siltstone
conglomerate
How can you tell that this rock is breccia and not conglomerate?
the sediments are all different sizes
there is more clay in this rock
the sediments are not rounded
the sediments are lighter in color
What kind of sediment was compacted to form this shale?
sand
silt
clay
pebbles
Sedimentary rocks are the only rocks that...
may contain fossils
contain minerals
form under pressure
are classified by grain size
Which of the following is not an example of a chemical (crystalline) sedimentary rock?
rock salt
rock gypsum
coal
dolomite
Coal forms from compacted plant remains and is classified as a...
non-clastic (biological) sedimentary rock
clastic sedimentary rock
extrusive igneous rock
mineral ore
Why is limestone classified as a bioclastic sedimentary rock?
it is made of compacted sediments
it is made of shells and other organic material
it forms from the precipitation of minerals
it is made by marine organisms
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