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Stack #4705401
| Question | Answer |
|---|---|
| results of divergent boundary | seafloor spreading, mid ocean ridges, volcanoes, rift valleys |
| what is seafloor spreading | ocean plates pulling apart & allowing hot magma to rise |
| what are mid ocean ridges | underwater mountain ranges |
| results of converegent boundareis | mountains, island arcs, earthquakes, volcanoes |
| what happens in a land vs land conv boundary | both plates go up forms mountain |
| what happens in a land vs water conv boundary | heavier ocean plate subducts (goes under) |
| what happens in a water vs water conv boundary | denser plate goes under |
| results of transform boundaires | earthquakes |
| whats the ring of fire | pattern of volcanoes around pacific plate |
| what are hotspots | areas of magma rising to surface |
| what is humus | main organic part of soil; broken down biomass |
| what does soil do for plants | anchors & provides nutrients |
| what does soil do for water | filters rainwater by trapping pollutants |
| how does soil recycle nutrients | home to decomposers → more nutrients |
| how does soil form from below | weathering parent material → fragments → inorganic part of soil |
| how does soil form from above | breakdown organic → humus, erosion deposits, soil particles |
| what is o-horizon | 'organic' // layer of organic matter on soil |
| purpose of o horizon | more nutrients, limits water evaporation |
| what is a horizon | 'topsoil' // layer of humus & mins from parent mat |
| purpose of a horizoon | biological activity & nutrients released |
| what is b horizon | 'subsoil' // light layer of minerals |
| what is c horizon | 'weathered rock' // least weathered, closest to parent mat |
| Loss of Topsoil causes | tilling & less vegetation makes it more erodible |
| Loss of Topsoil effects | less nutrients & organisms |
| compaction causes | machines & grazing reduce ability to hold moisture |
| compaction effects | more erosion, less plants |
| Porosity | volume of water a soil sample can hold |
| highset porosity particle | sand |
| Permeability | how easily water drains through soil |
| highets pemeability particle | Sand |
| what is a watershed | all land that drains into a body of water |
| what effects how waterhseds drain | Vegetation, soil comp, slope play a role in how watersheds drain |
| human impcats on watersheds | Nutrient pollution, Endocrine disruptors (from sewage treatment), sediment pollution (deforestation, urbanization) |
Created by:
rileycc