#5036 Daily Warm-Ups: Nonfiction Reading teacher Created Resources #5036 Daily Warm-Ups: Nonfiction Reading Warm-Up
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DAILY 6
28 Author Roald Dahl ©Teacher Created Resources 133 #5036 Daily Warm-Ups: Nonfiction Reading Warm-Up Check Your Understanding / 4 Name ______________________________________________ 1. Which of the following is used to make crayons? a. paraffin c. pigment b. stearic acid d. all of the above 2. From the context of the passage, what is the meaning of by-product? a. something produced when another product is made b. something you have to buy c. something only used in making crayons d. something made out of crayons 3. What causes crayons to have their distinctive smell? a. paraffin c. pigment b. glue d. stearic acid 4. Which comes last in the process of making crayons? a. making the pigment c. inspecting the crayons b. cooling the crayons d. adding stearic acid Crayons have been popular children’s playthings for decades. Almost every child and adult enjoys the look, feel, and smell of new crayons. Crayons are made from three basic ingredients: pigment, paraffin, and stearic acid. Pigment is made from various chemicals mixed with water in mixing tanks. After it is completely mixed, the solution is filtered to remove water and scraped off the filter trays. It is baked in a kiln to dry it completely. Then it is ground into a fine powder, ready to be mixed with paraffin. Paraffin is a by-product of oil production. It is stored at the crayon factory in large, warm storage tanks. Warm, gloppy paraffin is sent through pipes into a vat where the pigment is added. Stearic acid, which gives crayons their distinctive crayon smell, is added to the mixture. When the ingredients are thoroughly mixed, the solution is poured into trays with thousands of holes. Cold water is circulated to help the mixture cool quickly. A machine pushes the cooled crayons out of their holes. Expert crayon-checkers inspect each crayon to make sure it is perfect. The crayons are covered with glue and two labels to keep each crayon strong. They are funneled with other colors to make complete boxes of eight, sixteen, or sixty-four crayons. The next time you get a box of crayons, examine them, smell them, and then enjoy using them! Did You Know? Download 10.24 Kb. Do'stlaringiz bilan baham: |
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