Download weathering_and_erosion

Erosion
Hector sustaita
Erosion
What is Erosion?
Erosion is a natural process which is
usually made by rock and soil being
loosened from the earth's surface at one
location and moved to another. Erosion
changes the landscape by wearing down
mountains, filling in valleys, and making
rivers appear and disappear. It is usually a
slow and gradual process that occurs over
thousands or millions of years.
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Igneous rock
Hector sustaita
Obsidian rock
What is igneous rock
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The eruption of a volcano is an awesome
process. Unfortunately, (or fortunately!) most
of us will never experience it in our lifetime.
But we might have the opportunity to see the
products of volcanic processes while driving
across country or hiking in the woods.
Volcanic rocks, the solidified products of
volcanic eruptions are part of a larger group
of rocks called igneous rocks.
Metamorphic rock
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Created when other kinds of rocks are
changed by great heat and pressure inside
the earth. Marble, slate and quartzite are
examples of metamorphic
Metamorphic rock
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Metamorphic rocks are rocks that have "morphed" into another
kind of rock. These rocks were once igneous or sedimentary
rocks. How do sedimentary and igneous rocks change? The
rocks are under tons and tons of pressure, which fosters heat
build up, and this causes them to change. If you exam
metamorphic rock samples closely, you'll discover how
flattened some of the grains in the rock are Metamorphic rocks
are rocks that have "morphed" into another kind of rock. These
rocks were once igneous or sedimentary rocks. How do
sedimentary and igneous rocks change? The rocks are under
tons and tons of pressure, which fosters heat build up, and this
causes them to change. If you exam metamorphic rock samples
closely, you'll discover how flattened some of the grains in the
rock are
Sedimentary rock
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Metamorphic rocks are
rocks that have "morphed"
into another kind of rock.
These rocks were once
igneous or sedimentary
rocks. How do sedimentary
and igneous rocks change?
The rocks are under tons
and tons of pressure, which
fosters heat build up, and
this causes them to change.
If you exam metamorphic
rock samples closely, you'll
discover how flattened some
of the grains in the rock are
Chemical weathering – acid rain
Chemical weathering-acid rain
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The extra acidity in rain comes from the
reaction of air pollutants, primarily sulfur
oxides and nitrogen oxides, with water in
the air to form strong acids (like sulfuric
and nitric acid). The main sources of these
pollutants are vehicles and industrial and
power-generating plants. In Washington,
the main local sources are cars, trucks,
and buses.
Rock race’s
sand
Potting
soil
Clay
soil
gravel
Trial 1
4 sec
56 sec
7 sec
1 sec
Trial 2
4sec
58 sec
8sec
1sec
Size of particles
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I think that the first one is gravel because
it took 1 sec to deposit. The second one is
sand it took 4 sec to deposit. The third one
is clay it deposited in 7 sec. The last one
was potting soil. It took 58 sec to deposit
Is it inclined to erode?
Height of
stream table
Erosion ranking
(highest to
lowest)
4cm
Number of grid
squares
covered by
eroded sand
8 squares
8cm
10 squares
Second
12cm
16 squares
First
Third
Volcano
valcano
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A volcano is an opening, or rupture, in a planet's surface or crust, which
allows hot, molten rock, ash, and gases to escape from below the surface.
Volcanic activity involving the extrusion of rock tends to form mountains or
features like mountains over a period of time.
Volcanoes are generally found where tectonic plates are diverging or
converging. A mid-oceanic ridge, for example the Mid-Atlantic Ridge, has
examples of volcanoes caused by "divergent tectonic plates" pulling apart;
the Pacific Ring of Fire has examples of volcanoes caused by "convergent
tectonic plates" coming together. By contrast, volcanoes are usually not
created where two tectonic plates slide past one another. Volcanoes can
also form where there is stretching and thinning of the Earth's crust (called
"non-hotspot intraplate volcanism"), such as in the African Rift Valley, the
Wells Gray-Clearwater volcanic field and the Rio Grande Rift in North
America and the European Rhine Graben with its Eifel volcanoes.
Volcanoes can be caused by "mantle plumes". These so-called "hotspots" ,
for example at Hawaii, can occur far from plate boundaries. Hotspot
volcanoes are also found elsewhere in the solar system, especially on rocky
planets and moons.
Volcano
I wouldn't like to live by one because
it could erupt and we could die because the
lava is extremely hot.
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