00:01
Here, in the a part, the question is, what are the three forces that drive the plate tectonic? so, the three forces that drive the plate tectonic includes, first one, slab pull.
00:23
Slabful is the force due to weight of cold, dense, singing, tectonic plates.
00:41
So this is known as slab pull.
00:45
The second force that drive plate tectonic is ridge push.
00:53
Ridge push is the force due to buoyancy of the hot mandal which is rising to the surface beneath the ridge.
01:16
And the third force responsible for plate tectonic is known as viscous drag.
01:27
Viscous drag is the force that is opposing motion of the plate and slab pass the viscous mandal which is present underneath or on this side.
01:55
So this is these are the three forces responsible for plate tectonic.
02:01
One is viscous drag.
02:04
The other two are slab pull as well as ridge push.
02:09
So this will be part a answer.
02:12
Now we are moving on to the b part here.
02:16
Let us see what is meant by convection current...