VCE Biology U3 AoS 2 - Biofuels

What are fossil fuels formed from?

• Living organisms

• Remains of dead organic material

• Inorganic compounds

• Synthetic chemicals

Which of the following is not considered a fossil fuel?

• Coal

• Oil

• Natural Gas

• Bioethanol

What is biomass?

• A type of fossil fuel

• Organic material that can be sourced as a waste product from industries

• A nonrenewable resource

• A synthetic material used to produce biofuels

Which of the following is a type of biofuel?

• Coal

• Oil

• Biodiesel

• Natural Gas

What are biofuels created from?

• Fossil fuels

• Biomass

• Minerals

• Synthetic chemicals

Which of the following is NOT included in the term 'biomass'?

• Plants

• Animal by-products

• Biological waste material

• Inorganic substances

Why are biofuels considered renewable?

• They are inexhaustible

• They are derived from waste which can be sourced indefinitely

• They are made from non-organic material

• They are cheaper than other fuels

What does it mean when biofuels are described as 'Carbon Neutral'?

• They do not contain any carbon

• They produce no CO2 when burned

• The CO2 they release is balanced by the CO2 captured during photosynthesis

• They are made without using any carbon-based substances

What is the overall impact of biofuels on the amount of CO2 released into the atmosphere?

• It significantly increases the CO2 levels

• It has no net increase in the amount of CO2 released

• It decreases the CO2 levels over time

• It doubles the CO2 levels in the atmosphere

How is the energy stored in biomass originally obtained?

• A) Through the combustion of fuels

• B) From the heat of the Earth's core

• C) From the Sun and energy stored by plants through photosynthesis

• D) By fermentation of organic matter