Upon what does the weight of a body depend?
The weight of a body depends upon the force with which it is drawn towards the earth.
What kind of substances are attracted with the most force?
Those that are the most dense, like the metals; hence, they are the heaviest.
What causes a liquid to form into a drop at the mouth of a bottle?
The attraction of cohesion causes the drop to be formed.
What causes the drop to fall to the earth?
The attraction of gravitation causes the drop to fall to the earth.
When water is poured from a tumbler, why does it run down the side of the tumbler?
Because the attraction of cohesion draws the water to the side of the tumbler, as is shown in [Fig. 27].