|Here, a soil scientist is
putting a measuring tape and nails in the pit. This vertical section of
soil is called a soil profile. In the soil profile, you can see how there
are different layers, which a soil scientist calls horizons. She is using the orange
nails to show you where the different horizons are.
|| Have you ever thought
about where soil comes from? Originally, all soil comes from rocks and
minerals. Over time, rocks and minerals fall apart, or weather, into
smaller and smaller pieces, and form soil. Soil can be formed by wind, water, or even glaciers!