Which of the three methods of heat transfer is at work when an iceberg, that is floating in the ocean, is melting?? A. conduction
B. convercion
C. radiation

As far as the iceberg is concerned - conduction is taking place because the outer layers melt and disappear in the ocean. Heat is being transferred into the iceberg.

For the ocean waters one would also have convection because as the iceberg melts the ice water that is formed would become more dense than the surrounding water and would sink into the warmer water.

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.