Too much heat causes the cell to turn down.
gravitational force
The force of the convection cell is bumping into the lithosphere which cause's it to turn at point a
The convection forces of plate tectonics.
Pressure Gradient Force Coriolis Force Friction Force Pressure Gradient Force Coriolis Force Friction Force
thermal convection is the primary force that cause the sea floor to spread
what force cause normal expiration
unbalanced force
the answer is frictional force elotromagnetic force gravitational force
the fact that due to density changes it sinks
The three forces that causes an object to change its motion are the gravitational force, the normal force and the frictional force.
An unbalanced force will cause acceleration in the direction of the force.
The force required to cause the yielding of the solidis called the yield force.