The hypothesis is that locations that were used during the 1940s as orchards will have the most arsenic in the soil.

You will plot on a map where to take samples, dig a 15 cm. deep hole with a clean shovel, remove 125 ml. of dirt from the bottom of the hole, put dirt in a plastic sandwich bag, label the bag, and test the samples with an Innovox system.

You will need 15 plastic bags, a shovel, a garden rake, a testing kit, a black permanent marking pen, a measuring cup, and an Innovox system.

The results showed that Selah Intermediate School had the most arsenic and it was the only school that was an orchard in the 1940s. This suggests that the hypothesis should be accepted.

This science project is interesting because it shows how land use in the past can affect the environment today.

Variations to consider include testing more schools and samples, testing the samples more than once, and testing the samples before the ground freezes.

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!!