PLATE TECTONICS
many segments called pBates.
The plate tectonic theory states that the crust of the Farth is comoosed of collide with eaci
some cases, plates can
These plates nave the abiity to move over the Asthenosphere. n
volconoes, mountain buttaing.
other, at plate boundaries causing subduction and produce earthauokes,
away from each other, creating new
and ocean trenches. At other plate boundaries, plates may move
transtorm rauits o
crustal material (sea-floor spreading) or plates may move past one another creating
eorthquokes.
CRUSTAL PLATES
(10)
Onthe map below label the major crustal plates numbered one to ten.
Ten One
Seven
Two
Nine
Four Three
Eight Sx
Five
List the earth major crustal plates
2 ---
1--..
3 -----
6
5
7-..
9 10
PLATE TECTONICS
ACTIVITY 1
1. Define the following terms: (4 marks)
a.) Crustal Plate
b) Plate Tectonics
2. With the aid of labelled diagrams, differentiate between a convergent and a divergent plate
margin (boundary). (6 marks)
4. With the aid of a labelled diagram, describe atransform plate margin. Give an example.
(5 marks)
Total = 15marks
3
ACTIVITY 2
1 Jdentify the plates labelled W, X, Y and Z on the Map of the World below. (4 marka
Major Plate Boundaries
The carth's crust is broken up into a series of plates.
7
Vorth American
Plale
Arabia Pacific
W aribbean Plate
African Plate
South American
Plate
IndofAustralian
Plae
Antarctic Plate
Destructive Margin
Constructive Margin
Direction of Plate Movement
Transfornm Margin
W) X)
Y) Z)
2. What type of plate margin is found between the South American Plate and the African Plate?
(1 mark)
3. What type of plate margin is found where the plate labelled Xnmeets the South American Plate?
(1 mark)
4. Name the geographicalphenomenon (occurrence) that is associated with a transform plate
boundary? (1 mark)
4
5. For the phenomenon identified in question 4, explain how it occurs or forms. (3marks)
6. Give two landforms or occurrences that are usually associated with the following plate margins.
(4 marks)
Convergent a)
b)
Divergent a)
b)
Total = 14 marks
