Explore |
To know more about unhealthy trees, we decided to look at different trees around our neighborhood. Something interesting that we took note of was the leaves on the trees. Most of them, even if the tree looked relatively healthy, had discolored leaves. Some were yellow, others were brown, and some were even beginning to wither. The trunk of the trees was also something to note. While some of the trees we observed had holes in them or had a few bumps on them, others were peeling off and leaving cracks along the tree. The trees still seemed sturdy and could probably last a few more years, but the trunks on some of them were still in bad condition. With these observations in mind, we began to wonder about the animals that depend on trees. Do they know the tree is unhealthy? Would it be better if the unhealthy tree weren't there at all, or do animals still make use of them somehow? |
Research Question |
What are the great differences in the health (height, leaf color, roots, etc.) of trees when growing in a city than in a forest? (the benefits and negatives of tree health when growing in a certain area) |
Predictions |
Given the conditions of each environment, the trees that grow in forests will have more benefits than those in cities. Trees in cities are exposed to more sources of pollution and injuries (carvings, people ripping off leaves and branches, etc.) which can really impact the health of trees. Those in forests, on the other hand, are grown in an environment that trees were made for. Trees in forests typically have enough sunlight and nutrients to survive and stay healthy. Humans, in most areas, are scarce which means that trees have less chances of being exposed to as much pollution and injuries as those in the city. |
Experimental Design |
In the experiment we designed, we will be testing the conditions of trees in each location. Comparing these trees to healthy ones, we will record the condition of the trees. This would include the color of the leaves, any injuries to the trunk of the trees, its bark, and its height. Variables that will be kept constant will be the amount of water they get (rain) and temperature. We will record our data by taking pictures of the trees we observe and writing down any numbers or notable features relevant to the tree. |
Investigation Theme |
TREE |
Grade Level |
High School Students (Grades 9,10,11,12) |
Teacher Name |
Crystal Davis |
School Name |
California Academy of Mathematics and Science |
Session |
Spring 2021 |