The special feature of the upper mantle is the asthenosphere.It is located just below the lithosphere and is made up of rocks that is fluid and can move.The fluidity of these rocks powered the movement of the tectonic plates on the earths crust.Circular convection cycles in the hot,fluid upper mantle rock move the plates over the surface of the earth.
        
             
        
        
        
If you apply a little bit of force, one will move easier than the other since it is lighter.
        
             
        
        
        
I believe it she should use the first aid kit next
        
                    
             
        
        
        
True that is what a convection current is
        
             
        
        
        
Answer:
The SI unit of force is Newton.
Explanation:
Newton is denoted by N. 
Force can be defined as the pull or push which change or try to change the state of a body from motion to rest or rest to motion in a straight line.