The size and height of a chimney depend upon the size of the furnace. For larger furnaces there is greater danger of making the flue too small than too large. The stacks or chimneys of the largest steamships like the Mauritania and the Imperator are so large that two railway trains could run through them abreast, and they are about 175 feet in length. The difference between a chimney and a smokestack is in name only; chimneys constructed of tubing made from iron plates are usually called stacks.
—From "The World Book".
Courtesy of W. F. Quarrie & Co.
Questions
1. How does a difference between warm and cold air make chimneys useful?
2. Why is a tall chimney better than a short one?
3. How large are the chimneys or stacks on the largest steamships?
[IS IT TRUE?]
Arrange your paper as you are accustomed to do. Number the lines from one to ten. As you read each of the following statements, decide for yourself if it is true or false, and write the word true or the word false as the case may be, on the proper line of your paper.
1. Cloth is woven on looms.
2. Strawberries grow on trees.
3. The American Indians were always friendly to the early settlers.