Youtube Exercise » English Grammar Homework

B1-B2

How It's Made: Fireworks

Science Channel

2.1M views 6 years ago

Warm-up Questions

What do you think happens in a video called “How It’s Made: Fireworks”?
When do people usually watch fireworks (for example, on holidays or festivals)?
What colors or shapes do you imagine when you think about fireworks?

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How It's Made: Fireworks

Fireworks: history and modern technology (00:00 – 01:02)

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1. According to the video, what is the explosive ingredient in fireworks?

Charcoal
Gunpowder
Kraft paper
Plastic spacer

2. Where do historians believe gunpowder was invented?

France
Italy
The United States
China

3. What do modern pyrotechnicians use to ignite fireworks from a safe distance and synchronize them with music?

Candles
Matches
Computers
Magnets

How It's Made: Fireworks

Building the shell: compartments, fuses, and delays (01:02 – 03:27)

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1. Why are anti-static gloves necessary when assembling fireworks?

They prevent paper cuts from kraft paper
Static electricity could set the explosives off
They make the colors brighter
They make the glue dry faster

2. What is the purpose of the shock absorber in the shell?

To make the firework louder
To ignite the lift charge
To shield one compartment from the other compartment’s explosion
To color the glue blue

3. In the video, what are “stars” used for?

To label the size of the shell
To create flashes of color
To send the firework into the sky
To absorb shock between compartments

How It's Made: Fireworks

Finishing, labeling, and launching the firework (03:27 – 05:36)

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1. According to the video, what happens when the shell is sealed tighter?

More pressure builds up, so the explosion is bigger and more spectacular
The fuse burns more slowly outside the shell
Less pressure builds up, so the explosion is smaller
The lift charge becomes unnecessary

2. What does the label use international color codes to indicate?

The music to synchronize with
The name of the pyrotechnician
The weather conditions
The size of the shell

3. Where does the lift charge go, and what is its job?

In the middle; it makes the delay longer
At the base; it sends the firework into the sky
Outside the shell; it cools the launch tube
At the top; it creates the colors

How It's Made: Fireworks

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1. What is the main job of a pyrotechnician in this video?

Assembling explosives into fireworks
Writing music for fireworks shows
Designing international labels
Painting fireworks by hand

2. Why does the firework have separate compartments inside the shell?

To reduce the need for gunpowder
So it can be reused after the show
So it can create staggered bursts (explosions one at a time)
To make it cheaper to produce

3. What is the basic function of the lift charge?

To propel the firework upward from the launch tube
To create blue and orange colors
To absorb shock between compartments
To dye the glue blue

Discussion Questions

Discuss the ideas from this video

How It's Made: Fireworks

Why do you think modern pyrotechnicians use computers instead of lighting fireworks by hand?
Which safety risks are mentioned in the video, and what solutions does the pyrotechnician use?
What part of the firework-making process was most surprising or interesting to you? Why?
Do you think fireworks are worth the cost and risk? What are some alternatives for public celebrations?