Taking a Look at Wood
We also talked about the following concepts:
* Hardwood and softwood have nothing to do with how hard or soft wood is.
* Hardwood comes from deciduous trees.
* Softwood comes from evergreen trees.
* Wood has lots of parts that we can see with the naked eye, including heartwood, sapwood, growth rings, knots, and bark.
* Heartwood is the dead wood at the center of a tree. It's main function is to support the tree.
* Heartwood used to be sapwood.
* Sapwood is the living wood located between the hearwood and the bark. It's main function is to cary water and nutrients from the roots to other parts of the tree.
* You can determine the age of a tree by counting its growth rings; each ring represents on year of a trees life.
* One growth ring is made up of one earlywood ring and one latewood ring.
* Earlywood is the ligher part of a growth ring; it is formed early in the spring.
* Latewood is the darker part of the growth ring; it is formed late in the summer.
* Knots are formed when the tree grows over or around branches.
* Bark is not really made of wood!
Well, that sums up our the first part of our Wood Parts and Anatomy lesson. In the second part of this lesson we will be Taking a Closer Look at Wood.