The Science Behind Fireworks

What is the main cause of the loud bangs and crackles produced by fireworks?

• Rapid expansion of gases inside the firework shell

• Chemical reactions within the firework

• Friction between firework components

• Temperature changes in the atmosphere

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Main ideas and supporting details

What happens to the electrons in the atoms of chemical compounds when heated?

• They become 'excited' and jump to higher energy levels

• They become 'relaxed' and move to lower energy levels

• They become 'stable' and remain in the same energy level

• They become 'invisible' and disappear

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Understanding word meanings

What is the main purpose of timing and sequencing explosions in fireworks displays?

• To create visual effects

• To entertain the audience

• To follow safety regulations

• To test principles of chemistry

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Main ideas and supporting details

What does the passage explain?

• How to make fireworks

• The science behind fireworks displays

• The history of fireworks

• The dangers of fireworks

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Comprehending a text

What is the main idea behind fireworks?

• Fireworks are colorful

• Fireworks use science to create a dazzling display

• Colors are produced by different chemical compounds

• Shapes and patterns are created through carefully designed shells and fuses

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Main ideas and supporting details