Fun Physics Projects

Heat up water in a plastic glass ?? That's must make you very suprised.....
You'll think how to heat up the water....in fact plastic glass can melted if you burn it.
So...how ?? Just try it !! ...^.^...


What do you need ???

-A plastic glass
-Water
-Lighter


Explanation :

1. Just heat up the water in the plastic glass. There're no special way to heat up.
2. But don't move the water during the process of heating.


If you do the step above well.....the plastic glass won't melted....Why ???



When we heat up the plastic glass with water inside, the calor from fire will be transfered from the surface of plastic glass to the water, so the plastic glass won't melted away. But if we heat up an empty plastic glass, the calor won't transfered to anything....so the glass will be melted.



Here's the schematic picture :



Calor that transfered from the glass suface is use to heat up the water, so the plastic glass doesn't melted.