Biofuels (Edexcel GCSE Physics): Flashcards
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Practise the cards
13 cards from this deck
Biofuels definition
Biofuels definition
Renewable energy resources from organic materials (plants/animal waste)
Forms of biofuels
Forms of biofuels
Solid, liquid, gaseous
Solid biofuel examples
Solid biofuel examples
Wood, straw, dried manure
Liquid biofuel examples
Liquid biofuel examples
Ethanol, biodiesel
Gaseous biofuel example
Gaseous biofuel example
Biogas
Ethanol production method
Ethanol production method
Fermenting sugars from crops (corn, sugarcane, wheat)
Biodiesel production method
Biodiesel production method
Processing vegetable oils or animal fats
Biogas production method
Biogas production method
Bacteria break down organic matter without oxygen (anaerobic)
Ethanol use in vehicles
Ethanol use in vehicles
Mixed with petrol to power cars
Why biofuels are renewable
Why biofuels are renewable
Can be replenished quickly, unlike fossil fuels (millions of years)
Why biofuels carbon neutral
Why biofuels carbon neutral
released = amount absorbed by plants during growth
Land use disadvantage
Land use disadvantage
Takes land from food, raises prices, causes deforestation
Water usage disadvantage
Water usage disadvantage
Growing crops uses lots of water, problems in dry areas