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. The phenomena involved in the formation of land breeze and sea breeze is _________.
3. When heat falls on an object, part of heat is _____________ and part is____________
and part may be ________________________.
. The phenomena involved in the formation of land breeze and sea breeze is _________.
3. When heat falls on an object, part of heat is _____________ and part is____________
and part may be ________________________.
Answers & Comments
Explanation:
Land and sea breezes are wind and weather phenomena associated with coastal areas. A land breeze is a breeze blowing from land out toward a body of water. A sea breeze is a wind blowing from the water onto the land. Land breezes and sea breezes arise because of differential heating between land and water surfaces.
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Home Physics Thermal Properties of Matter Heat transfer
Question
If heat falls on an object, then:
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The whole heat is reflected only
the whole heat is absorbed only
the whole heal is transmitted only
the heat may be absorbed, reflected and transmitted.
Answer (Detailed Solution Below)
Option 4 : the heat may be absorbed, reflected and transmitted.
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Detailed Solution
The correct answer is option 4 i.e. the heat may be absorbed, reflected, and transmitted.
Radiation
When we come out in the sun, we feel warm, which means that the heat from the sun reaches us.
It does not reach us by conduction or convection as there is no medium such as air in most parts of the space between the earth and the sun.
From the sun the heat comes to us by another process known as radiation.
The transfer of heat by radiation does not require any medium and it can take place whether a medium is present or not.
When we sit in front of a room heater, we get heat by this process; a hot utensil kept away from the flame cools down as it transfers heat to the surroundings by radiation; our body too gives heat to the surroundings and receives heat from it by radiation.
All hot bodies radiate heat and when this heat falls on some object, a part of it is reflected, a part is absorbed and a part may be transmitted.
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Verified answer
Answer:
1) Correct answer is convection
Sea breeze: They are formed during the day time when land and sea both are heated equally by the sun, but land is heated up more quickly, thus air above land due to heat becomes lighter and rises up due to convection. Thus pressure decreases and cold and humid air above the sea blowing towards land.
Land breeze: They are formed during the night when sea water and land both lose heat. Land loses heat energy fast and cools more rapidly as compared to the sea. Sea water being at higher temperature, the air becomes lighter and rises up due to convection. So air from land starts blowing towards the sea and gives rise to a land breeze.
In both the processes, the transfer of heat takes place by actual movement of the particles of the medium.
2) When heat falls on some object, a part of it is reflected a part is absorbed and a part may be transmitted. The temperature of the object increases due to the absorbed part of the heat.
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