Download Limestone

Let’s Review Our Homework
2)
Chapter 3, Section 2 Review, # 2, 4, 5
What is the difference between intrusive and extrusive rocks? Give an example
of each.
Extrusive rocks, such as basalt, forms from lava that has erupted onto Earth’s
surface. Intrusive rock, such as granite, forms when magma hardens beneath
Earth’s surface.
4)
Why are some igneous rocks dark and others light?
Dark igneous rocks form from magma or lava low in silica content, while light
igneous rocks form from magma or lava high in silica content.
5)
How are basalt and granite different in their origin, texture, and mineral
composition? How are they similar?
Basalt is an extrusive rock with a fine-grained texture and low silica content.
Granite is an intrusive rock with a coarse-grained texture and high silica content.
Both are igneous rocks that began as molten material inside Earth.
IV. 3 Rock Categories
B. Sedimentary
1. What is Sediment?
a. Small particles/pieces of material
b. Can come from rocks/living things
2. Transportation
a. Water and Wind
b. Erosion/Deposition occurs as a result
IV. 3 Rock Categories
3. How Does Sediment Harden to form rock?
a. Deposition
b. Compaction
c. Cementation
IV. 3 Rock Categories
4. Types
Clastic
• Form from pieces of
other rocks (pieces
can range from clay –
boulder size)
• Examples: Shale,
Sandstone,
Conglomerate
Organic
• Form from remains
of living things
• Examples: Coal,
Limestone
Chemical
• Form when minerals
dissolved in solution
crystallize
• Form from mineral
deposits left when
seas or lakes
evaporate
•Examples: Limestone
IV. 3 Rock Categories
4. Types
Clastic
Organic
Chemical
HOMEWORK
• Read Chapter 3, Section 3
• Index Cards for bold vocabulary words found
in Section 3
• Section 3 Review, # 2 and 4
Coal: A sedimentary rock,
formed from decayed
plants, is mainly used in
power plants to
make electricity.
For Electric Power
Coal is used as a fossil fuel to create almost
half of all electricity generated in the United
States. Power plants burn coal to make steam.
The steam turns turbines (machines for
generating rotary mechanical power) that
generate electricity.
http://www.eia.doe.gov/kids/energy.cfm?page=coal_home-basics
What Emissions and
Byproducts Are Produced
from Burning Coal?
The combustion of coal
produces several types of
emissions that adversely
affect the environment.
Limestone
A sedimentary rock, it is used mainly in the
manufacture of Portland cement,
the production of lime, manufacture of paper,
petrochemicals, insecticides, linoleum,
fiberglass, glass, carpet backing and as the
coating on many types of chewing gum.
Shale:
A sedimentary rock, well stratified in thin beds.
It splits unevenly more or less
parallel to bedding plane and may contain
fossils. It can be a component of bricks and
cement.
Conglomerate:
A sedimentary rock with a variable hardness,
consisted of rounded or angular rock or
mineral fragments cemented by silica, lime,
iron oxide, etc. Usually found in mostly thick,
crudely stratified layers. Used in the
construction industry. They are also used in
decorating because they typically have a
variety of colors.
Manufacturing of plate glass, fine table
glassware, and common glassware.
Crushed in concrete and asphalt to fill in
dike and jetty construction.
Rough and weathered sandstone is used
as fireplaces, walls, and walkways.
As decorative stones.
Sandstone:
As bookends, clocks, paperweights,
A sedimentary rock more or less rounded.
Generally thick-bedded, varicolored, rough feel coaster, etc.
due to uneven surface produced by breaking As flooring or paving material.
Load bearing masonry
around the grains. Used principally for
construction, it is easy to work, the red-brown Sandstone slabs and sandstone tiles are
used in cladding.
sandstone of Triassic age, better known as
"brownstone," has been used in many eastern In chemical industries as flooring, wall
fixing and lining due to its acid and alkali
cities.
resistant properties.
It is ideal for carving and architectural uses
as pillars, arches, garden furniture,
fountains, landscaping products and stone
arts & crafts.
Sandstone blocks are used as foundations
and stonewalls.