IGCSE Physics (0625) 2.3 Thermal processes – 2.3.4 Consequences of energy transfer Paper 1

Question

A liquid is heated in a beaker.

                     

The density of the liquid changes as its temperature increases. This causes energy to be

transferred throughout the liquid.

How does the density change and what is this energy transfer process?

 

density

energy transfer process

A

decreases

conduction

B

decreases

convection

C

increases

conduction

D

increases

convection

Answer/Explanation

Ans: B

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