Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Oil, turf, gas, and wood are popular.

Wood is a solid

When wood burns, it crackles b/c the gas vaporises. If too much gas is in the wood, it will cause a small explosion.

Neither... The wood is the fuel, but first it needs to become a gas. The gas is what burns.

To make wood gas (which is a mixture of hydrogen and carbon monoxide) you heat wood chips in an container where there is little or no oxygen to the point where they blacken and give off their gas.

To do this (in a safe place outside) put an old metal kettle on a camping gas stove, fill it with dry sawdust and put on the lid. Turn on the stove gas and after a time fumes will come out of the kettle spout (these fumes will burn if ignited). The fumes are wood gas and soot particles (to make pure wood gas the soot needs to be removed).

It is possible to run a car on wood gas.