lessons check

What are the three things fire needs to burn?

• Smoke, water, and wind
• Heat, oxygen, and fuel
• Firewood, metal, and air
• Sparks, smoke, and gas
• Steam, dust, and light

Why does smoke rise up?

• Because smoke is very heavy
• Because hot air moves up
• Because fire pushes it down
• Because fire makes wind blow it away
• Because smoke is made of water

How do firefighters stop a fire?

• They take away one thing the fire needs
• They add more oxygen
• They use wood to block the flames
• They make the fire burn faster
• They cover it with smoke

What makes the fire tetrahedron different from the fire triangle?

• It includes water as part of fire
• It adds a chemical reaction
• It removes the need for oxygen
• It shows how water helps fire grow
• It has four sides instead of three

Why can some metal fires burn in space?

• Space has special fuel for fire
• Some metals create their own oxygen
• Fire burns faster in space
• The sun makes metal fires burn forever
• Space has more air than Earth

Which fire-starting tool works best in rain?

• A hand drill
• A fire striker
• A magnifying glass
• A flint and steel
• A waterproof lighter

If there’s a fire in the kitchen, what is the best first step?

• Throw water on it
• Close the doors to stop air from getting in
• Blow on it to make it smaller
• Let it burn out by itself
• Add wood so it burns faster

Which thing catches fire the easiest?

• Cooking oil
• Gasoline
• Wet wood
• Paper
• Coal

If fire was discovered today, what would people call it?

• A new invention
• Something that needs a patent
• A natural thing
• A secret only scientists know
• A dangerous new machine

If you wanted a room where fire could NEVER start, what should you remove?

• Metal walls
• Heat, oxygen, and fuel
• Sprinklers and alarms
• Light and smoke detectors
• Water and glass