A 2 meters long plastic rod was scaled every 10cm and then a thermometer sensor was fixed toi the bottom.
We then went to the shores of Lake Balaton. There, the metal bar was moved every 10 cm to 60 cm. A 10 cm portion was held down into the water for 20 seconds. It was held at a constant depth for 30 seconds moviong UPward.
1st pic: Finally we went back to school where we had discussed the measured results.
2nd pic: This graph shows Temperature vs. time, but the maximal density of water at 4°C.
3rd pic: The draw is symbolizing
the bed of a lake, as well.