Sailing under false colours means to sail under the enemy flag, and it was once a legitimate naval manoeuvre used to get close enough to the enemy for a surprise attack. At the last moment, just before opening fire, the false colours were lowered and replaced by the ship’s “true colours.” Although such deception is now considered dishonourable, we still say when someone we trusted reveals himself as the enemy that he is showing his “true colours.”
The United States has an area of 3.79 million square miles (9.83 million kilometers) and a population of more than 303 million people, making it the third or fourth largest country by total area, and third largest by land area and by population. The United States is one of the world’s most ethnically diverse nations.
The world’s newest country is Kosovo, which declared independence from Serbia in February 2008. Before that, the newest country was Montenegro, which became a country in June 2006, after splitting off from Serbia. Since 1990, 28 new nations have come into being. Many of these emerged from the collapse of the Soviet Union (14 countries) and the breakup of the former Yugoslavia (7 countries).
In the mid-1700s the ancient London Cathedral of St. Paul’s was falling apart, and the strain on the treasury was so great that it was decided that it would merge with the diocese of the newer St. Peter’s Cathedral in order to absorb and use their funds to repair the crumbling St. Paul’s. The parishioners of St. Peter’s resented this and came up with the rallying cry, they’re “robbing Peter to pay Paul.” Expressions
Kids often use the Internet for many things—doing research for homework, exploring new cultures, and building relationships with other kids. Kids who are shy in person may feel more comfortable initially connecting with people over the Internet. Excessive computer use, however, might further isolate shy kids from their friends. Or it can take away from other activities such as homework, exercise, sleep, or spending time with others.
Parents and teachers are often unaware that a child has an Internet problem until it is serious, because it is easy to hide online activity and because Internet addiction is not yet widely recognized. You may want to talk to your friend and his parents; have an adult accompany you if you feel you need support. It is important to promote healthy Internet use in your home, whether through limiting online time, balancing computer time with physical and social activities, or making sure your Internet-connected computer is in a public space in your home.
As we go up, the pressure and density of air goes on decreasing. A Partially filled pen leaks when taken to a higher altitude because the pressure of air acting on the ink inside the tube of the pen is greater than the pressure of the air outside.
As far as scientists can tell, all dinosaurs nested and laid eggs. From these eggs, their babies hatched. Hundreds of sites with fossil eggs of different dinosaurs have been found all over the world, including in the United States, France, Mongolia, China, Argentina, and India. The largest dinosaur egg fossil found is about 12 inches (30 centimeters) long and 10 inches (25 centimeters) wide, and may have weighed 15.5 pounds (7.0 kilograms). Scientists think the egg came from a giant, 100-million-year-old dinosaur called a Hypselosaurus. This is more than twice the size of the eggs of the modern African ostrich, which can lay eggs up to 6 inches (15 centimeters) long and 5 inches (13 centimeters) wide. The smallest fossilized egg found so far came from a Mussaurus; it measures about 1 inch (2.5 centimeters) long.
Estuaries are bodies of water along the beaches that are formed when freshwater from rivers flows into and mixes with saltwater from the ocean. Tides may rise and fall in the estuary, making this area a unique ecosystem rich in nutrients. Only certain types of plants, such as saltwort, eelgrass, and saltgrass can grow there, and few animals can live their entire lives there. However, mud shrimp, certain types of mussels, and the Western sandpiper all call estuaries home.
According to the Big Crunch theory, at some point all matter will reverse direction and crunch back into the single point from which it began. Another theory, called the Plateau theory, says that the expansion of the universe will slow to the point where it will nearly cease, at which time the universe will reach a plateau and remain essentially the same.
When early European settlers were moving west and clearing the land, every farm had an abundance of tree stumps in their fields. “Barnstorming” politicians who looked for a place of prominence to be seen and heard by the gathered electorate would invariably find a large tree stump to stand on from which he would make his pitch. This gave us the expression “on the stump,” which is still used to describe a politician seeking election.