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417 words used in the labs.

Find a term from the labs, understand the process behind it, and see how it appears in the landscape. Each entry connects an explanation with a real observation and a model you can explore.

Rain splash

The detachment and movement of soil particles by raindrop impact. It can begin erosion before continuous runoff develops. Vegetation, litter and surface roughness reduce the direct impact on exposed mineral soil.

What to look for

USDA NRCS archive photograph of raindrop impact. Splash detaches and redistributes soil particles before surface runoff carries them farther.

Close-up photograph of a raindrop splashing on soil and throwing droplets and particles outward.
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Explore further with USGS water glossary · USGS volcano glossary · NPS glacial geology · NASA Earth facts. Photograph acknowledgements are collected on the Image credits page.