Ira Gupta
IX-B
PHYSICS LAB REPORT
The rate of cooling of water in two different containers
Aim: To investigate the rate of cooling of water in two different containers.
Apparatus:
- A testube
- A beaker
- 2 digital thermometers (± 0.05°C)
- A testube holder (wooden)
- Measuring cylinder
- Warm water ( around 45 - 50°C)
- 2 stopwatches
Procedure:
- Pour 20ml of water into a measuring cylinder and then pour it into a beaker.
- Pour another 20ml into a testube.
- Place thermometers in both the containers and record the starting temperatures.
- Start the stopwatches simultaneously.
- Just when thirty seconds get over, record the temperatures that the thermometers reflect instantaneously.
- Continue this recording every thirty seconds.
- Stop after 10 minutes.
- At the end observe the difference in the total decrease in temperature.