The Science and Power of Fire

Fire is a versatile element used for cooking, warmth, and light. It is not matter but a chemical reaction involving combustion between oxygen and fuel. Combustion requires heat to reach ignition temperature and can be stopped by removing fuel, oxygen, or heat. Flames vary in color based on the substances involved. Fire powers machines but also causes damage and releases greenhouse gases, contributing to global warming.

What was one of the primary uses of fire in ancient times?

• To power vehicles

• To provide portable light and heat

• To generate electricity

• To create fireworks

Which of the following is NOT a component necessary for fire to continue burning?

• Water

• Fuel

• Heat

• Oxygen

How can fire be extinguished by removing one of its components?

• By adding more oxygen

• By smothering to remove oxygen

• By increasing the temperature

• By adding more fuel

What determines the color of a flame?

• The speed of the wind

• The type of fuel being burned

• The amount of oxygen present

• The temperature of the environment

What is a negative environmental impact of excessive burning?

• Increased rainfall

• Improved air quality

• Decreased air pollution

• Release of greenhouse gases