High School

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Heat transfer in liquids and gases takes place by:

a) Conduction
b) Convection
c) Radiation
d) Conduction and Radiation

Answer :

Final answer:

Heat transfer in liquids and gases primarily occurs through convection, hence the correct answer is b) Convection.

Explanation:

Convection is the transfer of heat through the movement of a fluid (which includes liquids and gases). When a fluid is heated, it becomes less dense and rises, while the cooler, denser fluid sinks, creating a circulation pattern. This movement of mass carries thermal energy from one place to another.

Heat can also be transferred by two other methods: conduction and radiation. Conduction is the process where heat is directly transferred between molecules through molecular collisions or direct contact. Radiation, on the other hand, is the transfer of energy via electromagnetic waves and does not require a medium to travel through.

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