Describe the change to the stores of energy of the wood, pipe and water as the water is heated.
[3 marks]
Wood
Pipe
Water

Explanation:

If we are free to imagine what wood, pipes and water have with each other, I propose:

A wood stove is used to heat water in the pipe above the stove.

In this case:

Wood:  Energy that comes with the wood is stored in the bonds that make up the wood, such as cellulose.  The C, H, and O bonds in cellulose all have specific amounts of energy stored in the bonds.  

A chemical decomposition of the cellulose (e.g., fire) releases the energy from those bonds.  That energy takes the form of light, sound, and heat.  A crackling fire will release enough energy to heat any pipes nearby/overhead.  

Pipe:  The heat capacity of the pipe will determine the amount of energy that is absorbed and transmitted to the water inside the pipe.  

Water:  The heat capacity of the water will determine how much the temperature will rise  Water has a relatively high heat capacity, so it will take a whole for the coffee.  Longer for the shower.  Heat is stored in the water as molecular vibration on the water molecules.  They will vibrate more quickly, which can be measured with a thermometer.

i would say the answer is food.

hope this !

the answer is kevlar