How do fireworks work?

What is the main ingredient of all fireworks?

• Potassium nitrate

• Charcoal

• Sulfur

• Black powder

What is the ancient explosive used in fireworks?

• Black powder

• Gunpowder

• Potassium nitrate

• Charcoal

What happens when black powder is ignited?

• It produces a large amount of gas

• It releases excess energy as light

• It creates a cloud of heat, gas, and noise

• It propels the firework into the air

Which element produces red color in fireworks?

• Strontium

• Barium

• Copper

• Iron

Why is achieving the 'perfect blue' color in fireworks challenging?

• Blue light has a shorter wavelength

• Blue light is too bright to be seen against the night sky

• Blue light is difficult to produce with chemicals

• Blue light is easily absorbed by the atmosphere

Which elements produce white sparks in fireworks?

• Aluminum, magnesium, and titanium

• Strontium, barium, and copper

• Iron, sulfur, and potassium nitrate

• Charcoal, sulfur, and black powder

How can sound effects like whistles be produced in fireworks?

• By adding iron to the pyrotechnic formulas

• By using a formula that produces a large amount of gas quickly

• By changing the size of the granules of black powder

• By adding different elements to the mixture

What determines the pitch and sound of a whistle in fireworks?

• The size of the opening for the gas to exit

• The velocity of the gas

• The type of pyrotechnic formula used

• The temperature at which the firework is ignited

How can a boom or bang sound effect be produced in fireworks?

• By adding iron to the pyrotechnic formulas

• By using a formula that produces a large amount of gas quickly

• By changing the size of the granules of black powder

• By adding different elements to the mixture

What should be considered when handling fireworks?

• They are safe to handle as long as they are in colorful packaging

• They should be handled with caution due to the explosions and burning chemicals

• They can be launched anywhere without legal restrictions

• They can be stored for long periods without any safety concerns