Question

When a comet nears the sun, what happens to the nucleus? responses it disappears. it disappears. it becomes gas. it becomes gas. it becomes liquid. it becomes liquid., it becomes solid. it becomes solid.

Answer 1

It becomes gas

Step-by-step explanation:

The answer that makes most sense is "it becomes gas". The nucleus of a comet is a solid ball of ice, dust, and rock. When it nears the sun, the ice on the surface of the nucleus begins to sublimate, which means it turns directly from a solid to a gas. The solid components of the nucleus remain solid (the dust and rock), but the ice changes state. This process causes the nucleus to become surrounded by a cloud of gas and dust, called the coma, which can be many times larger than the nucleus itself.