How are the rings made in a treetrunk?

Answer 1

Each ring is the previous years outer bark. As the tree grows it creates a new layer for that year which grows on top of the previous years outer skin this is how you can age a tree by counting its rings. eg; 10 rings would equal 10 years.

The spacing between these rings also determine which type of wood the tree is. Tightly spaced rings mean the tree has grown slowly making it a hard wood such as tightly spaced rings mean it has grown quickly and would then make the tree a soft wood such as pine. The weather and environment in which the tree grows can also determine the spacing of these rings for example a pine tree growing in Iceland, a very cold country would grow slower than say Scotland, which is close to Iceland but far enough away that the pine will grow quicker as it has a warmer climate. This would make pine from Iceland harder than pine from Scotland.