Edexcel GCSE Geography A 1GA0
Changing Cities
Coastal Landscapes and ProcessesLandscape option
Ecosystems, Biodiversity and Management
Energy Resource ManagementResource option
Geographical Investigations – Fieldwork
Geographical Investigations − UK Challenges
Geographical Skills
Glaciated Upland Landscapes and ProcessesLandscape option
Global Development
Mathematics and Statistics Skills
Resource Management
River Landscapes and ProcessesLandscape option
The Changing Landscapes of the UK
Water Resource ManagementResource option
Weather Hazards and Climate Change
Energy Resource Management
Developing renewables, and fracking
- 3 things to know
- Paper 2 section C
Overview
How hydro-electric schemes, wind turbines and photovoltaic panels generate electricity and what each costs the environment, then what fracking is, the shale it targets, and the objections raised against it.
What you need to know
Answer each one before you reveal it.
How does a hydro-electric scheme generate electricity?
Give two environmental costs of building a large dam.
Questions from this subtopic
Each one with the model answer underneath.
- 1
How does a hydro-electric scheme generate electricity?
Model answer
A dam holds back a reservoir, and water released through turbines spins them to drive generators.
- 2
Give one benefit a hydro-electric reservoir brings besides electricity.
Model answer
It can store water for irrigation and drinking and help control flooding downstream.
- 3
Give two environmental costs of building a large dam.
Model answer
Valley habitats are drowned by the reservoir, and sediment is trapped that would have fertilised farmland downstream.
- 4
How does a wind turbine make electricity?
Model answer
Moving air turns the blades, which drive a generator housed at the top of the tower.
- 5
Why are so many new wind farms built out at sea?
Model answer
Winds offshore are stronger and steadier, and the turbines stand far from homes.
- 6
How do photovoltaic panels produce electricity?
Model answer
Cells within the panel turn sunlight directly into an electric current.
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