VERY rough rule of thumb- the heavier and denser the wood WHEN DRY, the higher the heat value. Wood such as poplar, cedar, and pine are low density, and very light, and burn quickly. Heavier woods, such as oak, gum, ash and hickory, will burn longer, and give more heat.
Burning is a chemical change.
Thermal energy........
Burning is a chemical reaction with oxygen, an oxydation.
Wood Burning
Wood burning heater can be purchased at a wide variety of locations. The best places to purchase a wood burning heater is at a local hardware store or an appliance store.
Softwood usually. It depends on the density of the woods you are burning.
Energy cannot be created. (Or destroyed) Burning changes the chemical energy of the wood to heat energy and light energy.
Any wood is good for burning in a wood burner as long as it has been dried and seasoned.
Hard wood the tighter the grain the better.
Catapults are made from wood!
This kind of energy is called renewable energy.
The density of hickory wood is .89.