Grades K–2 · Systems
How does a gutter gather rain from a roof?
Rain can land across a roof. On this sloping roof, water moves toward the lower edge. A gutter waits there like a long narrow tray.
In the diagramA roof edge gathers rain into a pipeRoofGutterPipeGutter and downpipe are joinedRoof water follows the connected pipe
The gutter gathers water from the roof edge. It leads to a downpipe, a pipe that carries the gathered water down. The roof, gutter and pipe make one joined route.
A gap between the gutter and pipe breaks that route. Water can leave at the gap instead. With no rain arriving, the empty roof does not make water of its own.
About this explanation
Starting knowledge: Describe higher and lower places and follow water along a pictured route.
Sources
- U.S. Environmental Protection Agency — Soak Up the Rain: Disconnect / Redirect Downspouts