Natural Disasters Week 12

PROFESOR WENT TO FIELD TRIP IN MISSOURI

Three things to start a fire

• Oxygen

• Heat

• Fuel

Many plants and animal species evolved with fires and fires has become important management tool

Stream/Rivers

• Crucial to humanity

• watershed: area of land that channels rainfall and snowmelt into streams, rivers, and eventually larger water bodies

• Continental divide: separate drainages that flow through land

• Overland flow occurs when:

  • rainfall intensity exceeds the infiltration capacity of the soils

  • the soils are saturated and can’t hold any more water

• Sheetwash: a thing, mobile sheet of water flows over the surface of a hill slope and may transport the surface material

• Rills: very small stream or a shallow channel formed by flowing water