Question

Write a brief explanation of convection, using the terms 'expansion', 'density' & 'gravity'.​

Answer 1

Answer:

Expansion- the action of becoming larger or more extensive.

Density-he degree of compactness of a substance.

Gravity-the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.

Explanation:

Answer 2

Exapnsion :- The expansion of the universe is the increase in distance between any two given gravitationally unbound parts of the observale unvirese with time.

Density :- Mass of a unit volume of a material substance.

Gravity :- is also called the gravitational force, the universal force of attraction acting between all matter....

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