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Gravity controls the slope.

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Q: Why does a heap of sand pyramidal shape?
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Why does the sand take the shape of the container when sand is a solid?

In spite of the apparent evidence, it is not correct to say that sands take the form of the container. Sand is formed by a large number of small particles of amorphous silicon. The single particle does not change shape when put in the container, for example if it would be cubic it remains cubic. The particles change position one with respect to the other so to fill the container at best due to gravity. This phenomenon is especially evident if the sand is shacked after the container filling. Nevertheless, the container is never completely filled, due to the fact that the shape of the particles is generally not suited to completely fill the container.


What can move on a scrap heap magnet?

well basically anthing that is made out of metal and steel, will move on a scrap heap magnet.


How a scrap heap magnet works by using a picture?

With your MIND.


Why is a person hit harder when he falls on a concrete floor than he falls on a heap of sand from the same height?

It is because the the person has a certain amount of energy when he is falling. He has to dissipate all of the energy to come to a stop. The amount of energy absorbed by the contact is equal to the Force times the Distance. The sand allows the person to sink into it when he hits it so the sand requires less Force. When the person hits concrete he does not sink in very a very far distance (in fact it is the person that takes most of the deforming) and so it requires a much greater force to absorb the energy.


What state of matter is characterized by having a definite shape and a definite volume?

The state of matter is actually to states of matter. Solid and liquid are the states of matter that have a volume,(liquid) and shape(solid).