Water cycle Flashcards
What is positive feedback
Effects of an action are amplified by its outcome
Eg melting ice caps release methane which warms the earth melting more ice
What is negative feedback
Effects of an action are nullified by its secondary effects
Eg erosion creates an offshore bar but the bar gets too big and slows erosion
What are the earths subsystems
Atmosphere
Hydrosphere
Lithosphere
Biosphere
What is the biosphere
The subsystem of Alive entities such as plants and animals
What is the hydrosphere
The subsystem of water
What is the lithosphere
The subsystem of rock
What is the atmosphere
The sub system of air
What is a cascading system
When subsystems are linked as a chain as part of an open system.
The output of one system is the input of another system
What is oceanic store
Oceanic - large non inland oceans such as the Arabian Sea
It is a store
What is cryospheric store
Permafrost. Basically water is stored as ice
What is terrestrial store
Lakes store water like oceans do and rivers transfer from terrestrial to oceanic
What is atmospheric
A transfer using water vapour
