Key term
CCEA A-Level Environmental Technology 3930
Fossil Fuels
Global Action on Energy Conservation and Climate Change
Macrogeneration
Microgeneration
Energy From Wind
Topic overviewHorizontal and vertical axis wind turbinesKinetic energy, wind power and the Betz limitPower curves, rated output and energy lossesSwept area, blade length and turbine massAir density, hub height and turbine sitingPower control, yawing and survival speedChoosing a location for a commercial wind farm
Energy From the Sun
Topic overviewSolar radiation, tracking and concentrating solar powerFlat plate and evacuated tube collectorsSizing a domestic solar thermal systemPhotovoltaic cells and semiconductor wafersTypes of photovoltaic module comparedPlanning regulations and solar incentivesPassive solar design in new and existing buildings
Energy From Biomass
Energy Storage
Plastics for the Future
Topic overviewCrude oil as a fuel and a feedstockRefinery gases and the making of polymersPersistent plastic waste and the Great Pacific Garbage PatchToxic gases from incinerating plasticsBiodegradable, photodegradable and compostable plasticsTesting photodegradable plastic against polytheneBio-derived polyethylene and a sustainable plastics future
Renewable Energy Investigations
Sustainable Development
Waste Management
Waste to Energy Technologies
Land Contamination and Remediation
Topic overviewContaminated land, risk and traditional remediationBioremediation principles and bioreactor systemsMicro-organisms that degrade named pollutantsBioremediation benefits and genetically engineered microbesPhytoremediation of metals and other elementsPhytoextraction with Indian mustard and alpine pennycressBiohydrometallurgy and phytomining of ores
Hydrogen Fuel Cells
Transport System Challenges
Energy Performance of Buildings
Emerging Technologies
Sustainable Urban and Rural Communities
The Code for Sustainable Homes
Topic overviewPurpose, levels and assessment of the CodeEnergy, carbon dioxide and water categoriesMaterials, surface water run-off and waste categoriesPollution, health and wellbeing, management and ecology categoriesMeasuring the performance of an existing buildingPerformance profiles, improvements and evaluation
Sustainable Urban and Rural Communities
Local food and communication technology in rural areas
- 3 things to know
- A2 1
Overview
The environmental, economic and social benefits and limits of local food, community-supported agriculture, communication technology and rural services, the digital divide, local services and community-owned renewables.
What you need to know
Answer each one before you reveal it.
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Key term
What are the economic benefits of local food production?
Key term
What are the social benefits of local food production?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What are the environmental benefits of local food production?
Model answer
Local food travels fewer miles, cutting transport emissions. Seasonal local produce needs less refrigeration and packaging.
- 2
What are the economic benefits of local food production?
Model answer
Money spent on local food supports local farmers and businesses. Farm shops and markets create rural jobs.
- 3
What are the social benefits of local food production?
Model answer
Farmers' markets and community-supported agriculture connect producers and consumers. Local food schemes strengthen community identity.
- 4
What are the limitations of relying on local food?
Model answer
Local production is seasonal, so choice is limited at some times of year. Some crops grow more efficiently in other climates, even after transport.
- 5
How can communication technology improve rural accessibility?
Model answer
Broadband lets rural residents work, shop and use services online. Online access reduces isolation without new journeys.
- 6
Why is avoiding new travel demand important in rural sustainability?
Model answer
Rural residents often depend on cars because public transport is limited. Services delivered online cut car journeys and emissions.
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