PDF chapter test TRY NOW
Take two conical flasks and paint one white and the other black. Fill both with water.
Place the conical flasks in direct sunlight for half an hour to one hour.
Touch the conical flasks. Which one is hotter? You could also measure the temperature of the water in the two conical flasks with a thermometer.
Can you think of ways in which this finding could be used in your daily life?
Place the conical flasks in direct sunlight for half an hour to one hour.
Touch the conical flasks. Which one is hotter? You could also measure the temperature of the water in the two conical flasks with a thermometer.
Can you think of ways in which this finding could be used in your daily life?
Observation:
Water in the black painted flask is than the water in a white flask.
Explanation:
A surface absorbs more heat as compared to a surface under identical conditions.
Application:
and use this property in their working.
Answer variants:
Electric cookers
colder
Solar water heaters
Solar cookers
white or a reflecting
Electric water heaters
hotter
black
Register for free to see more content