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10Convection occurs due to the actual movement of molecules.
Convection takes place mainly in solids.
In heated water, hot water rises upward.
Cold air is lighter than hot air.
Wind is caused due to convection of air.
Sea breeze occurs during the night.
Land cools faster than sea at night.
Forced convection requires external energy.
Electric fans work on the principle of radiation.
Convection helps in cloud formation and rainfall.
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Heat transfer in liquids and gases mainly occurs by
In convection, heated fluid becomes
Which of the following is an example of natural convection?
Sea breeze flows from
Land breeze occurs during
Which one causes wind formation?
Forced convection needs
Hot air balloon rises because hot air is
Which appliance works on convection principle?
Rainfall occurs due to
Heat transfer due to movement of molecules is called ______.
Convection occurs in ______ and gases.
Heated air becomes ______ and rises upward.
Cold air moves ______ to replace hot air.
Wind is caused due to ______ of air.
Sea breeze occurs during the ______.
Land breeze blows from land to sea at ______.
Convection without external help is called ______ convection.
Electric fans are examples of ______ convection.
Hot air balloon rises due to ______.