Download Why Africa is being torn apart

GCSE Geography
Restless Earth
• Lesson Focus:
Why is Africa being torn apart?
• By the end of this lesson, you should be able to:
- describe how Africa is splitting apart
- explain why Africa is splitting apart
© Teachable and james yeoman. Some rights reserved. http://teachable.net/res.asp?r=8262
GCSE Geography
• The Great Rift Valley
© Teachable and james yeoman. Some rights reserved. http://teachable.net/res.asp?r=8262
Restless Earth
GCSE Geography
© Teachable and james yeoman. Some rights reserved. http://teachable.net/res.asp?r=8262
Restless Earth
Sequencing Task
Beneath East Africa is a hot spot, a plume of hot...
1) away from each other.
The molten
2) apart creating new
3) break and separate.
crust as it does. When this This Great Rift Valley is a
process happens within a constructive plate
continent it
4) magma rising from
deep within the mantle,
pushing up the
5) level but occupied by
lakes at several locations.
The Red
6) slowly moving
7) collect, eventually
forming a sea. In East
Africa, the plate has
8) crust. The pressure is
forcing the African
continent to
9) is called rifting. As the
Great Rift Valley expands,
water will
10) margin where the
plates are
11) rock continues to
push the crust
12) not been completely
rifted and the rift valley is
still above sea
... Sea is a more developed rift.
© Teachable and james yeoman. Some rights reserved. http://teachable.net/res.asp?r=8262
Sequencing Task Beneath East Africa is a hot spot, a plume of hot...
• 4. magma rising from deep within the mantle, pushing up the
• 8. crust. The pressure is forcing the African continent to
• 3. break and separate. This Great Rift Valley is a constructive plate
• 10. margin where the plates are
• 6. slowly moving
• 1. away from each other. The molten
• 11. rock continues to push the crust
• 2. apart creating new crust as it does. When this process happens within
a continent it
• 9. is called rifting. As the Great Rift Valley expands, water will
• 7. collect, eventually forming a sea. In East Africa, the plate has
• 12. not been completely rifted and the rift valley is still above sea
• 5. level but occupied by lakes at several locations. The Red
... Sea is a more developed rift.
© Teachable and james yeoman. Some rights reserved. http://teachable.net/res.asp?r=8262
A cross-section of the Great R _ _ T valley in E _ _ T Africa
which has been annotated to show how it has formed.
Steep R _ _ _ _ S form on the
sides of the rift valley, including
some V_ _ _ _ _ _ _ S where
magma reaches the surface
As the plates move apart the land
S _ _ _ _ _ _ S (sinks) creating a valley
Scientists believe that a
Hot M _ _ _ A
H _ T spot in the
is rising through
M_ _ _ _ E below has
the thinning
opened up the rift valley
C_ _ _ T
on the surface
© Teachable and james yeoman. Some rights reserved. http://teachable.net/res.asp?r=8262
Over time, the valley fills with
W _ _ _ R, forming lakes, and over
time, new S _ _ S and oceans
The crust is separated
into two different plates
which are moving
A___T
A cross-section of the Great RIFT valley in EAST Africa which
has been annotated to show how it has formed.
Steep RIDGES form on the
sides of the rift valley, including
some VOLCANOES where
magma reaches the surface
As the plates move apart the land
SUBSIDES (sinks) creating a valley
Scientists believe that a
Hot MAGMA is
HOT spot in the
rising through
MANTLE below has
the thinning
opened up the rift valley
CRUST
on the surface
© Teachable and james yeoman. Some rights reserved. http://teachable.net/res.asp?r=8262
Over time, the valley fills with
WATER, forming lakes, and over
time, new SEAS and oceans
The crust is separated into
two different plates which
are moving APART
© Teachable and james yeoman. Some rights reserved. http://teachable.net/res.asp?r=8262