Tectonic plates describe the large-scale motion of Earth's lithospheric plates. The movement of these plates began between 3.3 to 3.5 billion years ago, driven by the viscous mantle. Where the plates meet, they form different types of boundaries based on their relative motion: convergent where plates collide and form mountains, divergent where they separate and form mid-ocean ridges, or transform where they slide past each other along transform faults.

2. Tectonic Plates
● Plate tectonics a scientific theory describing the large-scale motion
of seven large plates and the movements of a larger number of
smaller plates of Earth’s lithosphere.
● Tectonic processes began on Earth between 3.3 to 3.5 billion years
ago.
● As the mantle acts as high density viscous material, it helps crust
plates to move around.
● Where the plates meet, their relative motion determines the type of
boundary: convergent, divergent, or transform.
● The relative movement of the plates typically ranges from zero to 100
mm annually.
● The location where two plates meet is called a plate boundary

3. Cont..,Tectonic Plates

4. Cont..,Tectonic Plates

5. Cont..,Tectonic Plates
Convergent Boundaries
Divergent Boundaries
Transform Boundaries

6. Types of Plate Boundaries
1. Convergent boundary- formed due to Plates collision
1. Andes Mountains of
South America formed
at the convergent
boundary of the Nazca
Southplates and the
American plate.
2. Himalayan Mountains
of Asia were formed
when the Indo
-Australian plate collided
with the Eurasian Plate.

7. Types of Plate Boundaries
1. North American plate moving
away from the Eurasian and the
African plates causing the Mid
Atlantic ridge.
2. Divergent boundary- Formed due to
plate separation
2. Great Rift Valley in eastern Africa

8. Types of Plate Boundaries
3. Transform boundary - Plates slide past one another
The San Andreas Fault

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