Question

Perform an activity to measure the temperature of the water, soil, sand, and air in bright sunlight and shade.

Answer 1

The following activity is to be performed to measure the temperature of the water, soil, sand, and air in bright sunlight and shade.

Experiment:

1. Take a beaker filled with water, another filled with soil, a closed bottle, and an empty beaker containing a thermometer.
2. Keep them in bright sunlight for three hours.
3. Measure the temperature of all three containers along with the temperature of the empty beaker.
4. All the containers to rest in shade for an equal time duration.
5. . Measure the temperature of all three containers along with the temperature of the empty beaker.

Observations:

1. The temperature of the water, soil, and the air taken in bright sunlight is higher than that recorded in shade.
2. Soil showed higher temperature as compared to water in bright sunlight.
3. The temperature of the air in a closed gas bottle was more than the temperature taken in the open air.

Inferences:

1. Since soil is solid, it has a higher coefficient of heat. This is the reason that land gets heated faster than water by solar radiation.
2. In the closed bottle, the temperature is higher due to the greenhouse effect and lesser heat loss due to convention. In the open empty beaker, the heat is lost due to convention. Due to this, the temperature is lesser.