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Answers
Answer:
1. The reading of the thermometer is more in activity (ii). This is because soil or sand gets heated up quickly by the solar radiations than water.
2. Based on this finding, the land would clearly become hot faster than water bodies.
3. No, the thermometer reading of the temperature of air (in shade) the same as the temperature of sand or water. This is because of the direct effect of radiations when kept in direct sunlight. The temperature should be measured in the shade because the direct solar radiations affect the thermometer reading making it non-uniform.
4. The temperature of air in the closed glass bottle is more than the temperature taken in the open air. This is because of the greenhouse effect. The solar radiations enter the glass bottle through the walls but they cannot pass out. So, they heat up the air inside the closed bottle. This phenomenon of the greenhouse effect is common in everyday life. Ex. A greenhouse can warm up an area that could be used for the growing of crops in cold countries.