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27 Cards in this Set
- Front
- Back
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What is BOLTSS |
Border, orientation, legend, title, scale, source |
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What is meant by food security |
That food is available, accessible and used appropriately |
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What is slash and burn farming |
Where an area is cleared, the vegetation burned and is used for farming for a few years and then is left |
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What is salinity |
The level of salt in the soil |
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What causes high levels of salinity and why |
The removal of trees with large roots and their replacement with shallow rooted plants such as crops. Raises the water table |
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What is eutrophication |
The overabundance of nutrients in a body of water, causing the rampant growth of plant life such as algae |
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What are the different methods of rice production |
Irrigated Rainfed Upland Flood prone |
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Where are the different methods of rice production used |
Irrigated - Indonesia Rainfed - Bangladesh Upland - Central America Flood prone - Vietnam |
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What is desertification |
The process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture. |
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What is a biome |
A region with a similar landscape, climate and vegetation throughout |
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What are the biomes |
Desert Aquatic Temperate forest Boreal forest Grasslands Tundra Polar lands Tropical rainforest |
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What are the parts of the global air cycle |
Hadley cells, Ferrell cells, Polar cells |
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At what latitudes are each cell at |
Hadley - Between 0 and 30N/S Ferrell - Between 30N/S and 60N/S Polar - Between 60N/S and 90N/S |
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What causes the global air circulation. |
The sun, by heating up air over the equator the air rises and causes rain over the tropics |
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What is the equation for photosynthesis |
CO2 and Water become O2 and glucose with help from light and chlorophyll |
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What is the equation for chemical respiration |
Glucose and water become CO2 and energy or C6H12O6 + 6O2→ 6CO2 + 6H2O+ energy |
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What is the equation for NPP |
NPP = GPP (Gross primary production) - Respiration |
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Factors that can influence NPP |
Amount of sunlight
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Why do rainforests have lower levels of nutrients in their soil |
Because the heavy rainfall washes all the nutrients deep into the ground meaning the topsoil is very nutrient deficient |
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Layers of the rainforest |
Emergent Layer Canopy Layer Understory Forest Floor |
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What is subsistence farming |
Farming where the farmers are relying on their crops for food |
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What is the rain shadow effect |
Where a mountain or mountain range forces clouds carrying water higher into the sky causing the clouds to drop all their water, leaving none for the area behind the range |
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How is soil created |
Soil is created by huge glacial movement grinding up rocks |
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Decision making on a farm - Environmental |
Sunshine Temp Wind Humidity/Rainfall Slope of the land Water Soil fertility Soil structure |
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Decision making on a farm - Economical |
Markets Technology Expertise Financial resources |
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How soil is formed (steps) |
Rock is weathered Organic matter helps with weathering Soil horizons form Soil is able to support developed vegetation |
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What are some of the problems with Australian soil |
Very low in nutrients b/c of constant weathering |
