Please help with science questions.. No one's helping me there. Will fan and give medal!

Question

anonymous · Answer

For the first question think how surrounding air change??
and the second think of the properties of water and how phase change??

kmullis6 · Answer

1. Because of the air being hotter than the glass of water?

anonymous · Answer

If I assumed that a glass has the temperature of cold water says 10C and surrounding air have temperature of 27C what should happen with air??

kmullis6 · Answer

This is condensation right?

anonymous · Answer

It should be. If there is no flow of surrounding air >> you can assume that surrounding air looks like a solid with higher temperature than glass and definitely transfer the heat to the glass which depends on how fast it can be transferred, but eventually decrease and get close to 10C and at that point surrounding air that basically contain some water will partially condense as a water droplet

aum · Answer

There is water vapor in the atmosphere (humidity). As air comes in contact with the cold glass, the air and the water vapor it contains, cools down and when it reaches the dew point, water droplets will begin to form on the outside of the glass.  This is the process of condensation.  When humidity is very high more water vapors will condense into liquid water.  When the air is very dry (low humidity) very small amount of condensation will take place.

anonymous · Answer

The second question is just an opposite phenomena from the first question
PS. my explanation might not that good, hopefully it can give you an idea ><

kmullis6 · Answer

Ok thanks you guys. For the next one, I was going to put something like this...

''This phase change is liquid to gas. Heat is what causes a phase change. Just like the stage before. In order for a solid to become a liquid, again, there had to be heat. The heat transfer was radiation.'' 

It is radiation right? /:

anonymous · Answer

If considering the heat transfers from the sun, it's yes :D

aum · Answer

This is evaporation which is different from boiling.  In order to go from liquid to gas via boiling, the liquid must be heated to the boiling point.  But evaporation is a slows process that can occur at temperatures well below the boiling point.  Here the heat from the sun reaches the water in the glass via radiation.  The molecules on the surface of the water begins to gain kinetic energy and if it moves fast enough the water molecules can escape from the liquid surface and become vapor.

kmullis6 · Answer

Ok. Thank yall so much!