1.
When Harleen told Surjit that sea
waves can attain the height even above
9m then Surjit became surprised. The
reason for it is:
(a) Alkaline sea water
(b) More depth of sea
(c) Cyclones in the sea
(d) Size of sea
Answers
Answer:
the answer is option (c)
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Answer:
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Explanation:
Author
Kalila Morsink; Reviewed by Dr. Adam Sobel, Columbia University
Introduction
What’s the difference between a hurricane, a typhoon and a cyclone? The short answer is that there is none. They are all organized storm systems that form over warm ocean waters, rotate around areas of low pressure, and have wind speeds of at least 74 mph (119 km per hour). The reason for the three names is that these storms are called different things in different places. Scientists often use “tropical cyclone” as a generic term, while “hurricane,” “typhoon,” and “cyclone” are regional terms. In this article, “hurricane” will be used as an umbrella term to refer to them no matter where they are.
Hurricanes also get their own individual names, just like new babies. In the Atlantic, this practice began during World War II, when military meteorologists had to figure out how ships and planes could navigate around hurricanes. They initially tried several naming strategies, including naming hurricanes after the girlfriends of those observing them, but by 1953, meteorologists had begun using alphabetically ordered female names. In 1979, male names were added. Today, the World Meteorological Organization maintains six lists of alphabetically ordered male and female names that are rotated, meaning that eventually, each hurricane name will come around again—except if the hurricane is devastating enough that its name is retired (as were the names Camille and Katrina). Greek letters are used if the entire list is used within a season and if a hurricane forms outside the official hurricane season, it is named after the date on which it occurs. Unfortunately, if you want a hurricane to be named after you, you’re out of luck—there’s no procedure for that.
Whatever they’re named, hurricanes all form over tropical ocean waters, which are the source of their strength. But people pay the most attention to them when they come near land, and rightly so, because hurricanes can do a lot of damage. That’s because they release an enormous amount of energy—when fully developed, one hurricane can release heat energy equivalent to a 10-megaton nuclear bomb exploding every 20 minutes. They are also much bigger than other violent storms, like tornadoes. But at the same time, they are part of an enormous and complicated natural system that makes our planet a place we can live. They help keep the Earth’s temperature stable by moving heat energy from the equator to the poles. The more we know about hurricanes, the better we’ll understand how to prepare for them, so we can minimize damage and loss of life in the future.