Fuels and Fire Triangle

What is a fuel?

• A substance which burns to give out energy

• A substance which burns to take in energy

Combustion is the reaction with which elements?

• Hydrogen

• Nitrogen

• Oxygen

• Carbon

What term is given to a reaction that gives out heat?

• Exothermic

• Endothermic

Clearing trees from a forest fire, removes (blank) from the fire triangle?

• Fuel

• Oxygen

• Heat

Covering burning oil with a fire blanket removes what from the fire triangle?

• Heat

• Fuel

• Oxygen

Fossil fuels are formed over millions years with

• low heat and low pressure

• high heat and low pressure

• low heat and high pressure

• high heat and high pressure

What are the products of complete combustion?

• carbon monoxide, water and soot

• carbon dioxide and water

• carbon monoxide and water

• carbon dioxide, water and soot

The yellow bunsen flame is an example of which type of combustion?

• complete combustion

• incomplete combustion

What is the only product when hydrogen is used as a fuel?

• hydrogen

• carbon dioxide

• water

• oxygen

Which of the following is not a renewable source of energy?

• coal

• geothermal

• solar

• wind