Helpmyphysics

We have found out that hot air rises. This is because it expands when warm and becomes less dense compared to the surrounding air. Less dense air will rise upwards.
In the video above we see what happened when we placed an ice cube with some dye inside. The ice cube cools the water surrounding it and this contracts the water making it more dense than the surrounding water. So it sinks.
Science is so cool!

In our science class at St. Andrew`s we made a special convection current detector. To be honest it was really just a pencil with a bit of tissue paper on the end of it but it did show hot air rising above the hot flame of the bunsen burner.
Convection is a process where heat energy is carried to other areas of a room. Convection can only occur where there is a difference in temperature and only occurs in either liquids or gases.

Hi second year. Just as promised click on the link below to download a cracking looking periodic table.
Periodic Table