Physical Science Review 6.4: Question Preview (ID: 15654)


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What is oxygen's role in the fire triangle?
a) When heated, it rises making more space for a fresh supply to come in b) When heated, it sinks making more space for a fresh supply to come in c) When heated, it rises making less space for a fresh supply to come in d) When heated, it sinks making less space for a fresh supply to come in
________________ is a material that releases energy when it burns
a) fuel b) baking soda c) product d) reactant
Why is water so effective at putting out fires?
a) it requires large amounts of heat to change state and covers fuel b) it requires small amounts of heat to change state and covers fuel c) it requires large amounts of heat to change state and traps carbon dioxide d) it requires small amounts of heat to change state and traps carbon dioxide
What will not be effective in fighting a small fire?
a) blowing on it b) fire blanket c) fire extinguisher d) fuel
Most home fires result from
a) cigarettes b) electrical wires c) heaters d) cooking
Which of the following cannot control a fire
a) adding oxygen b) adding baking soda c) adding water d) adding carbon dioxide
What provides the activation energy for a fire to start
a) heat b) fuel c) oxygen d) carbon dioxide
What things are required to start and maintain a fire?
a) fuel, oxygen, and heat b) fuel and oxygen c) oxygen and heat d) fuel and heat
Which of the following is incorrect
a) fuel and oxygen can react on their own b) fuel can be wood c) oxygen makes up 20% of the air d) none of the choices
What is the chemical equation of combustion?
a) fuel + oxygen → carbon dioxide + water b) fuel + carbon dioxide → oxygen + water c) fuel + water → carbon dioxide + oxygen d) carbon dioxide + oxygen → fuel + water
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