Difference in Temperature in Temperature and its Measurements – Class 7 Science Experiment
Chapter Name: Temperature and its Measurements
Activity Name: Difference in Temperature in Temperature and its Measurements
Activity Description:
In this experiment, we will measure the difference in temperature between the air in the shade and the air in the sun at different times of the day (8 am and 12 noon) as well as at night (8 pm). We will use a thermometer to measure the temperatures and record our observations.
Required Items:
- Thermometer
- Note-taking materials (pen/pencil and paper)
Step by Step Procedure:
- Place the thermometer in a shaded area (away from direct sunlight) and let it stabilize for a few minutes to adjust to the surrounding air temperature. This will be our reference temperature for the air in the shade.
- Once the thermometer has stabilized, record the temperature as “Air in the shade (at 12 noon).”
- Now, move the thermometer to an area exposed to direct sunlight and allow it to stabilize for a few minutes to adjust to the new surroundings. This will be our measurement for the air temperature in the sun at 12 noon.
- Record the temperature as “Air in the sun (at 12 noon).”
- Repeat steps 1 to 4 at 8 am and 8 pm to measure the morning and night temperatures in both shade and sunlight.
Experiment Observations:
| OBSERVATION | RECORDED TEMPERATURE (°C) |
|---|---|
| Air in the shade (12 noon) | 25 |
| Air in the sun (12 noon) | 34 |
| Morning (8 am) | 20 |
| Night (8 pm) | 18 |
Precautions:
- Ensure that the thermometer is clean and calibrated before starting the experiment.
- Keep the thermometer away from any heat sources or cooling effects that might affect the temperature readings.
- Place the thermometer at each location for a sufficient amount of time to allow it to stabilize and give accurate readings.
- Be cautious while handling the thermometer, as it may contain mercury or other sensitive materials.
Lesson Learnt from Experiment:
The experiment will help us understand the difference in temperature between the shaded and sunny areas at different times of the day. We can observe how sunlight affects air temperature and gain insights into the concept of microclimates and the importance of shade in controlling temperature. We may also observe that the temperature difference between shade and sun varies depending on the time of day.
