Fire Investigation

What is Fire?

• a solid-phase physical reaction that emits light and heat

• a gas-phase chemical reaction that emits light and heat

• a liquid-phase chemical reaction that emits light and heat

• a gas-phase physical reaction that emits heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

What is pyrolysis?

• When heat converts solids into fuel gases

• When heat converts gases into fuel solids

• When heat converts solids into liquids

• When oxygen is converted into heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is combustion?

• When solid pieces of furniture mix with heat and result in flames

• When fuel gases mix with oxygen to and are ignited by heat that results in flames

• When fuel gases mix with carbon dioxide and are ignited by heat that results in flames

• When solids catch on fire and blow up stuff

Which of the following is not a part of the fire triangle?

• heat

• oxygen

• fuel

• all of the above belong to the fire triangle

What type of fuel releases the most smoke and can generate the most soot?

• wood

• a synthetic couch

• a chair made of organic materials

• tile floors

Heat is thermal energy.

• True

• False

Tags

NGSS.MS-PS3-3

Flashover is a phenomenon when everything pyrolyzes and ignites at the same time.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the correct order of the 4 stages of fire development?

• growth, full development, ignition, decay

• growth, ignition, full development, decay

• full development, ignition, decay, growth

• ignition, growth, full development, decay

During a fire gases and smoke move because of differences in temperature, density, and pressure

• True

• False

Tags

NGSS.MS-ESS2-5

NGSS.MS-PS1-4

What is the effect of limiting one leg of the fire triangle?

• nothing, it keeps burning

• it makes the fire smaller

• it makes the fire bigger

• it makes the fire go out