In this unit we will look at… Glaciated Landscapes
In this unit we will look at…
Learn about the landforms associated with each landscape
Have to be able to
the formation of the landforms
Have to be able to draw sketches of some landforms
Have to know the processes that shaped these landscapes
Learn how to identify landscape features on an O.S map
Throughout the lithosphere unit you will use O.S
maps to identify features
, using 4 and 6 figure grid references.
Look at the O.S map of the Cairngorms on the next slide and
describe the evidence which shows that this area was once affected by glaciation.
Find features of glaciation on the map extract, and use 4 and 6 figure grid references to show where the features are on the map.
U-shaped valleys and
are features of
But what processes have
shaped these landforms,
and other landforms of
When rocks have
become weakened by freeze-thaw
, the moving glacier freezes onto the valley sides and floor
As the glacier moves downslope by gravity, the rocks that the glacier has frozen onto are torn away from the valley sides and floor
, jagged rock surfaces
By tearing away huge rocks, the valley sides are left very steep and the base very flat.
The jagged rocks and stones embedded at the base of the glacier or ice sheet, scrapes along the valley sides and base.
is like a sandpapering effect
, where the valleys sides and base become smooth
Where the rocks embedded in the glacier scratch along the surface, striations may be left on the rock surface. Striations are scratch marks on the rock surface.
Answer the 1998 past paper question on
3b) is worth 4
marks so you are looking for
points to make
Using the information that you have just heard and your
notes, answer the following question;
feature of glacial erosion
and explain the processes involved in the
formation of this feature.
Annotated diagrams may be used.
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