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प्रश्न
Set up an experiment to measure gain and loss of heat by water, sand and air.
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उत्तर
Take two beakers and fill them with water and sand, respectively. Take a closed bottle and place a thermometer in it. Keep these three in sunlight for three hours. Now, measure the temperatures of the three containers.
You will observe that the temperature of water is less than the temperature of sand, as sand gets heated by the sun faster than water. Also, the temperature of air in the closed bottle will be higher than the normal temperature of air in open because of the greenhouse effect.
Also, measure the temperature in shade, as temperature in direct sunlight will not be uniform.
संबंधित प्रश्न
We need to understand that global warming, climate change, acid rain, and ozone depletion are all happening because of our dependence on fossil fuels and CFC-based technologies. Therefore, the need of the hour is to reduce our dependence on them.
What can you do in this regard?
Write True or False.
The ozone layer is harmful to humans and animals.
Why is the thermosphere important?
This is a picture of a supersonic aircraft.
This layer of the atmosphere is also known to protect living beings from the harmful rays of the sun. How?
Answer the following question briefly:
Name the different layers of atmosphere.
Tick the correct answer:
The major constituent of atmosphere by percent is ____________
The ______ layer protects us from the harmful UV rays coming from the sun.
The part of atmosphere which contains gases with even composition is called ______.
______ found above the mesosphere.
Movement of wind takes place in ______ layer.
