Out of all the samples I collected, I think dogwood will hold the most moisture because it has the highest density.

What is density? The definition of density is the measurement of how tight a material is packed together.

What is the density of dogwood, pine, aspen, spruce, poplar, and birch? The density of dogwood is 760, pine 350-500, aspen 420, spruce 450, poplar 350-500, larch 500-560.

What do fires need to start? There are three elements needed to start and keep a fire going - fuel, heat and oxygen.

What are the advantages of having dogwood in forests? Their berries are important food for wildlife, they provide nesting/shelter for birds, and their root systems help prevent soil erosion.

What does dogwood have in it?  Dogwood is usually composed entirely of sapwood (living cells), not heartwood (dry, dead cells), which makes it more fire resistant.

independent variables= different woods, 

dependent variables= density, 

controlled variables= oven, 

Step.1= collect of wood such as pine, aspen, spruce, poplar, fir, and birch.

step.2= Submurge the samples all in the sink in water for about 12 hours. step2.5= cut each sample in half.

step.3= pre heat the oven to 200 degrees farenheit.

step.4= weigh each sample and record weight on expirement chart.

step.5= place 1 of each sample on 2 different trays and then place the 2 trays in teh oven.

step.6= then, take the trays out of the oven and record weight in the expiriment chart.

step.7= reapeat steps 5 and 6 at 5, 10, 15, 20, 25, 30, 60, 120 mins.

In my results I see that pine and spruce lost the most ammount.

In the results, that pine and spruce stayed at the top means that they lost the most ammount of mouisture.

Also, the one that lost the most moisture was dogwood because of its high density.

Based on the results it went from bottom to just above 40.

the aspen did not change much because of how skinny it is.

1. I learned that dogwood and aspen lost the lowest amount of moisture over 120 minutes. This means that dogwood and aspen should be more fire resistant than pine, spruce, poplar, and larch.

2. My hypothesis was partially correct - dogwood lost the least amount of moisture on tray #1 but aspen (less dense) lost 2% less than dogwood on tray #2.

3. More investigations to see which woods are more fire resistant could be: which woods are more rot resistant; which woods are more drought resistant; and which woods have more sapwood inside.

4. People could use my results to plant more dogwood (and maybe aspen) in Alberta's towns and forests.  

It can be planted in forests. What I mean is plant more dogwood in the alberta forests.

The heat of the oven.

I could have soaked other woods longer than others.

Density of Wood Species: Data & Material Guide

Fire Triangle

Unit of Density - Density Definition, SI unit, Solved Examples

Dogwood Tree Facts You May Not Know - Gardenia.net

What Is the Difference Between Sapwood and Heartwood?

Dogwood Tree

My mom and my dad, and teachers. sra styles for helping with my slides, srta rivas for cysf websites.