fireworks Imani Josh
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Fireworks contain various chemical compounds that produce different colors when burned. Parts of a firework include a break, time delay fuse, and stars that explode separately. A firework is propelled into the air by a lift charge after the fuse ignites black powder in the launching tube. Chemical reactions between substances like potassium chlorate and gunpowder produce heat and light. Common firework designs include palms, chrysanthemums, and roundels. The Chinese invented fireworks over 1000 years ago to scare spirits, and they have since evolved with many technological and safety improvements.
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Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
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Chapter 6
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Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
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fireworks Imani Josh
- 1. Fireworks
- 2. ● ● ● Parts of a Firework Break: A container with 2 compartments each holding a bursting charge Time delay: A fuse that slowly burns all the way through the firework causing each part to explode separately Stars: Stars that explode in a single firework
- 3. Parts of a Firework ● ● ● ● Black powder: The basic material inside a firework Launching tube: The tube that holds the mortar and the firework Fuse: Wire that connects with Lift charge Lift Charge: Charge that gets the firework in the air
- 4. ● Chemical Reactions Potassium chlorate and gun powder makes an energetic source of oxygen causing the temperature to rise ● ● Black powder and a fuse make an explosion which releases gas The Chemical reaction in stars is caused by black powder and a special substance which gives off light and heat
- 5. The elements and compounds that make up the colors ● Sodium = yellow ● Calcium = orange ● Strontium + lithium = red ● Barium = green ● Copper = blue ● Strontium + copper = purple ● Magnesium = white ● Titanium = silver
- 6. History of Fireworks ● The chineese were the first to make fireworks 1000 years ago.They developed firecrackers and rockets from sulfer, charcoal and potassium nitrate.Fireworks were used for scaring away spirits and were dull in color Marco Polo brought fireworks to Italy resulting in Italy becoming the capital of fireworks.
- 7. History of Fireworks ● ● In the 1800s fountains ,wheels and images of fireworks were made. After the Industrial age the understanding of fireworks was better. Many children died after fireworks were brought to the public and introduced to the kids. 4000 of them died In 1980 there were more every year until 1910 electronically fired 1914 new laws were fireworks passed
- 8. ● ● The Palm design has cylinders traveling up and then exploding curving downward like palms. Designs The Chrysanthemum design has a spherical patteren leaving a trail behind it. The Roundel design has a circle of maroon shells exploding in a sequence.
- 9. Sounds ● ● The Bang of a Firework is caused by a strong case around the shell so that when it explodes a bang is released The whistle sound is made by leaving a drilled hole in the bottom of the shell
- 10. Safety Tips ● ● ● Dont sit too close to the fireworks display to avoid ear damage Keep fireworks away from pets Get an Adult to launch bigger fireworks
- 11. Safety Tips For people making fireworks there are also rules that they must follow:● ● Wear ear protection incase something goes off Never experiment with the fireworks without supervision
- 12. Sources ● http://science.howstuffworks.com/innovation/fireworks.htm ● Fireworks Vicki Cobb ● Fireworks raintree fusion ● Modern marvels ● Nova