Download ROCKS

DATE: MAY 17, 2017
SUBJECT: GEOGRAPHY
TOPIC: ROCKS AND SOIL
ROCKS AND SOIL
To start off the lesson, let’s watch this
video. (Click on the link below)
https://www.youtube.com/watch?v=r68iEwY
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ROCKS AND SOIL
First, let us define the term “rocks.” What
do you think are rocks???
Solid
ROCKS
Make up
the earth
Minerals
ROCKS AND SOIL
Since rocks are inclusive of the words/
phrase mentioned on the last slide, let’s
form a definition:
Rocks are solid structures made of
minerals which make up the earth’s
surface.
ROCKS AND SOIL
Can you remember the THREE main
types of rocks???
The Three Main Types of Rocks are:
1. IGNEOUS ROCKS
2. SEDIMENTARY ROCKS
3. METAMORPHIC ROCKS
ROCKS AND SOIL
Since we know the Three main types of
rocks, we are now going to look at How
these Rocks are Formed. Therefore let’s
watch this video (click on the link):
https://www.youtube.com/watch?v=a3olYeN
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FORMATION OF ROCKS
IGNEOUS
FORMATION
These
are
formed
SEDIMENTARY
METAMORPHIC
when These are formed from the These
molten material from within accumulation
are
and igneous
formed
and
when
sedimentary
the earth cools and hardens. solidification of sediments rocks are transformed due to
When the magma cools, it that settle on the sea floor extreme heat (from inside the
formed intrusive igneous rocks as
well
as
from
the earth) and pressure (from
before reaching the surface. accumulation of fossils. rock layers). This is known as
When the molten material is These fossils may include metamorphism (which means
erupted, it is called lava. When bones and shells of sea to change). The new rock is
it cools and hardens, extrusive creatures, remains from different from the original
igneous rocks are formed.
plants as well as through rock in terms of physical
the process of weathering. (texture
and
colour)
and
chemical properties.
EXAMPLES
Granite, Basalt, Gabbro
Limestone, Chalk, Shale, Graphite,
Sandstone
Marble
Schist,
Slate,
ROCKS AND SOIL
HOMEWORK
On a folder sheet/ blank paper, draw a
well labelled diagram of the rock cycle.
(15 marks)
END OF LESSON
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UNDERSTANDING, YOU CAN WATCH
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