Children, even those that are vaccinated, may develop rotavirus disease more than once. That is because neither natural infection with rotavirus nor rotavirus vaccination provides full immunity (protection) from future infections. Usually a personâs first infection with rotavirus causes the most severe symptoms.
Because molecules move quicker at higher temperature, causing them to collides more. Since they collides more, reaction occurs to be a lot faster to. And that's why things dissolve quicker in hot water than in room temperature water.
So, as the fast molecules escape, the temperature of remaining water drops. That's why evaporation cools. See Figure 2, top drawing. Water boils when evaporation occurs throughout the pot â not just on the surface â and forms bubbles that are buoyed to the top where they escape.