Question

1. if you have one pound of coal and one pound of wood, which one will produce more heat?

a) coal
b) wood
c) they will produce the same amount of heat

1. less coal is needed to generate the same amount of heat as wood. this means coal takes up space than wood.

a) less
b) more
c) the same amount of

Explanation:

Coal has a higher energy density than wood. This means that for the same mass (in this case, one pound), coal will release more heat when burned. Also, if less coal is needed to generate the same amount of heat as wood, by the principle of volume - mass relationship (assuming similar densities, which is a simplification but valid in the context of comparing energy - related space requirements), less mass (coal) will take up less space.

Answer:

1. a) Coal
2. a) Less