Question

If you heat up a block of iron and place it into cold water, which way does the heat flow?

a
heat energy does not flow between objects
b
from the hot block of iron to the cold water
c
from the cold water to the hot block of iron
Question 7

Answer 1

b — from the hot block of iron to the cold water.

Heat flows spontaneously from the higher-temperature object to the lower-temperature one (by conduction/convection) until they reach thermal equilibrium.