A scientist places a strip of hot metal on top of a block of another metal with a lower melting point. The second metal quickly melts. What
transfer responsible?
U Convection, because the metals touch and cold from the block moves to the warmer strip of metal, cooling it down
Conduction, because both metals are in the sun and melt as the sun's rays heat them
Convection, because heat from the strip of metal heats the air around it, and then that warm air heats the metal block
Conduction, because the heat energy is absorbed by the metal atoms in the block. Once they have absorbed enough energy, they b

Wooden , walls ,doors ,support

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero. 

The upward force acting on the wing of a airplane in flight is known as the "lift" force. (d)