Читать книгу Common Science - Carleton Washburne - Страница 25
Inference Exercise
ОглавлениеExplain the following:
21. A ship when it goes to sea always carries ballast (weight) in its bottom.
22. If the ship springs a leak below the water line, the water rushes in.
23. The ship's pumps suck the water up out of the bottom of the ship.
24. The water pours back into the sea from the mouths of the pumps.
25. As the sailors move back and forth on the ship during a storm, they walk with their legs spread far apart.
26. Although the ship tips far from side to side, it rights itself.
27. However far the ship tips, the surface of the water in the bottom stays almost horizontal.
28. While the ship is in danger, the people put on life preservers, which are filled with cork.
29. When the ship rocks violently, people who are standing up are thrown to the floor, but those who are sitting down do not fall over.
30. If the ship fills with water faster than the engines can pump it out, the ship sinks.