The hypothesis is that wood of all types will expand when they absorb moisture and shrink when they lose moisture.

You will cut four types of wood into blocks of the same size, label them, and place them in an oven for 24 hours. You will then measure the change in dimension of the wood after being dried in the oven, and at normal room humidity.

You will need a redwood block, a teak wood block, a black oak wood block, a red maple block, a caliper, an oven, a pair of gloves, and a black marker pen.

It was observed that all four types of wood shrank the most along the growth rings. The black oak showed the biggest change in dimensions compared to the other three types of wood. Redwood showed the least change in dimensions.

This science project is interesting because it shows how wood changes size when exposed to different levels of humidity. It also shows how the type of wood affects the amount of expansion and shrinkage.

To improve the reliability and accuracy of the results, a larger number of wood samples should be used. This science project can also be repeated with other types of woods like Pine, Fir, Hemlock or Birch.

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!