Question

Answer the questions. 1 What's inside fireworks? 2 What happens when someone lights the fuse of a firework? 3 What makes the beautiful colors in fireworks? 4 Why do some fireworks make many different colors?​

Answer 1

Ответ:

1.Fireworks contain gunpowder and chemicals that produce different colors when burned.

2.When someone lights the fuse of a firework, the heat from the burning fuse ignites the gunpowder inside the firework, causing a rapid combustion reaction that creates gas and heat.

3.The beautiful colors in fireworks are created by different chemicals that are added to the gunpowder, which produce various colors when they burn.

4.Some fireworks make many different colors because they contain multiple layers of chemicals that burn at different temperatures, creating a range of colors and effects.

Answer 2

1. Fireworks typically consist of several key components:

   • Shell: The outer container that holds the various components of the firework.
   • Fuse: A cord that ignites the firework when lit.
   • Lift charge: A small explosive that propels the firework into the air.
   • Burst charge: An explosive charge that causes the firework to explode.
   • Stars: Small, pellet-like packages that contain chemicals responsible for producing colors, sparks, or other effects.
   • Binders: Substances that hold the chemicals together in the stars.
   • Oxidizers and reducers: Chemical compounds that provide oxygen and fuel for the reactions that create the colors and effects.
   • Modifiers: Additional substances that can enhance or modify the appearance of the fireworks.

2. When someone lights the fuse of a firework, it ignites the lift charge. The lift charge creates an explosion that propels the firework high into the air. As the firework reaches its peak altitude, the burst charge ignites, causing the shell to explode. The explosion disperses the stars and other effects contained within the firework, creating a visually spectacular display.

3. The beautiful colors in fireworks are created through the use of various chemical compounds known as metal salts. When these metal salts are heated, they emit light of specific wavelengths, resulting in different colors. Here are some examples of metal salts and their corresponding colors:

   • Strontium salts: produce red color.
   • Barium salts: produce green color.
   • Copper compounds: produce blue color.
   • Calcium salts: produce orange color.
   • Sodium salts: produce yellow color.

   By combining different metal salts and controlling the timing of their ignition, firework manufacturers can create a wide range of colors and color combinations.

4. Some fireworks are designed to produce multiple colors by incorporating different metal salts into their composition. By strategically placing these metal salts within the firework and coordinating their ignition, it is possible to achieve colorful displays with a single firework. For example, a firework may contain compartments or layers of different metal salts, each responsible for a specific color. Additionally, some fireworks use time-delay fuses or other mechanisms to control the ignition of different sections, allowing for sequential bursts of various colors and effects. The combination of these techniques enables the creation of fireworks that produce many different colors.