The movement of the liquid in a thermometer shows changes in temperature. An increase in temperature indicates the molecules in the liquid

When heated, the molecules of the liquid in the thermometer move faster, causing them to get a little further apart. This results in movement up the thermometer. When cooled, the molecules of the liquid in the thermometer move slower, causing them to get a little closer together.

Explanation:

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Moved faster and spread farther apart

Explanation:

if you're asking what comes out, it's steam.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.