You will need:
- 2 large pans
- Lots of ice cubes
- Sand
- Candle
- Room
- Oven
- Mittens
Every time you go to a beach, there would have always been a cool breeze blowing. With this project figure out why beaches are always so breezy.
INSTRUCTIONS
- You will need a room with no breeze.
Shut all the doors, windows and fan. - Fill one pan full of sand and heat it in the oven for 5-8 minutes.
- While the pan is heating, light a candle and blow it out. Watch where the smoke blows. If there is no breeze it should blow upwards.
- Fill the second pan with ice cubes.
- Get the sand-filled pan out of the oven. Be careful to hold it with mittens, so as not to burn your hands.
- Place the two pans right next to each other. Wait for a minute.
- Light the candle once again. Holding it between the 2 pans, blow it out. Where does the smoke go this time?
RESULT
The pan filled with ice creates a high-pressure zone above it while the pan filled with hot sand creates a low-pressure zone above it. As a result, the air begins to move from the high-pressure zone (ice pan) towards the low-pressure zone (hot sand) so as to even the pressure. This creates wind. And this is also the
reason why beaches almost always have a breeze blowing in from the sea.