Things really do catch fire no1

What happens when oxygen mixes quickly with carbon and hydrogen in wood?

• The wood becomes cold and brittle
• It forms water instantly
• A slow chemical change begins
• The wood turns soft and soggy
• Heat, light, and smoke are produced

Why does blowing on a campfire make it burn brighter?

• You add more fuel
• You remove moisture
• You cool it with air
• You feed it oxygen
• It spreads the wood pieces

What is the flame in a fire?

• Just smoke moving in the air
• Where gases freeze
• A part that never moves
• The coldest part of fire
• The visible part where gases burn

What do firefighters often remove to stop a wildfire?

• Roads and rocks
• Trees and plants (fuel)
• Wet soil
• All water sources
• Clouds from the sky

What is the flash point of a substance?

• The time it catches fire
• The loudest sound a fire makes
• The temperature where it melts
• The lowest temperature it can release flammable vapor
• The moment it disappears

Why are smoke alarms placed on ceilings?

• Because alarms need air
• Because they look better
• Because hot air rises (convection)
• Because smoke is heavy
• Because it’s easier to reach

What’s an example of slow oxidization?

• A fire in the forest
• A candle flickering in the wind
• Gasoline burning in a car
• A bicycle turning rusty
• Lightning striking a tree

Who is MOST likely to use fire blankets to stop a fire?

• A firefighter putting out flames
• A baker making cookies
• A fashion designer
• A swimmer training underwater
• A painter in a museum

When is a match MOST likely to cause ignition?

• When kept in a fridge
• When it’s wet
• When mixed with oil
• When struck and touches dry paper
• When used underwater

What is MOST likely to happen when gasoline reaches its flash point?

• It gets colder
• It evaporates quietly
• It releases vapors and can ignite
• It melts into solid form
• It freezes the air around