Download Geography

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Large igneous province wikipedia, lookup

Sedimentary rock wikipedia, lookup

Igneous rock wikipedia, lookup

Mudrock wikipedia, lookup

Transcript
Geography
By Bethany Parkinson 9MT
A rock is a compact mass of mineral matter.
There are three main type's of rocks!
• Igneous
• Metamorphic
• Sedimentary
Igneous rocks are formed from Volcanoes.
They are formed underground by the trapped,
cooled magma.
They are also formed above the ground when
the volcanoes erupts and the magma cools.
Examples of igneous rocks:
Examples of igneous rocks are basalt,
granite, scona ,pumice and obsidan.
Pumice
Basalt
The most common igneous rocks are
granite and basalt.
Granite is used for kitchen worktops and
fire surrounds.
Sedimentary Rocks are formed under
water.
They are made up of layers of bits of
eroded earth in lakes.
These layers form into rocks over a period
of time.
Types of Sedimentary Rocks:
Some examples of sedimentary rocks are
shale, Sandstone ,Gypsum, Limestone,
Coul and Conglome rale.
Limestone
Sandstone
Uses for Sedimentary Rocks:
• Sedimentary rocks such as
sand stone are often used
by builders for decoration on window
surrounds and windowsills.
• Coal is the most common sedimentary
rock and is used to burn for heat.
• Metamorphic rocks are rocks that have
been changed by heat and pressure.
• Metamorphic rocks were once igneous or
sedimentary but have been changed.
Schist and Gnesis are both types of
metamorphic rocks.
Gnesis
Schist
Uses for Metamorphic Rocks:
• Marble which is a metamorphic rock is
used for wall and floor tiles.
It is also used for fireplaces.
• Slate is another metamorphic rock which
is used for roofs on buildings.
• Metamorphic rocks are tough
and resistant.
• Weathering is when the rocks are broken
down by different types of weather.
• Freeze thaw weathering is when water
gets into the crack of the rocks and it
freezes. Repeated freezing and thawing
weakens the rock and splits it into pieces.
• Weathering is most common in
mountainous areas.
• Erosion is the breakdown of the rocks
through their contact with water, ice, heat
or anything which rubs against the rocks.
• Erosion changes the shapes of the rocks
and their texture.
Message from Mr Manson
• A simple but very effective design for your
work Bethany
• I love the way that you have broken each
rock type into 3 sections and explained
each part individually.
• Some really good work and presentation –
well done
• A1