GEOLOGY

EARTH SCIENCE

NATURAL HAZARDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a tropical storm?
A
a great flow of water over land that is usually dry
B
rotating storm with low pressure at its center that can turn into a hurricane
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -A tropical cyclone is a rapid rotating storm originating over tropical oceans from where it draws the energy to develop. It has a low pressure centre and clouds spiraling towards the eyewall surrounding the “eye", the central part of the system where the weather is normally calm and free of clouds.

Detailed explanation-2: -The Eye: the center of the storm. The most recognizable feature found within a hurricane is the eye. They are found at the center and are between 20-50km in diameter. The eye is the focus of the hurricane, the point about which the rest of the storm rotates and where the lowest surface pressures are found in the storm.

Detailed explanation-3: -Those with maximum sustained winds of 39 mph or higher are called tropical storms. When a storm’s maximum sustained winds reach 74 mph, it is called a hurricane. The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating, or category, based on a hurricane’s maximum sustained winds.

Detailed explanation-4: -Cyclone refers to any spinning storm that rotates around a low-pressure center. The low-pressure center is also referred to as the ‘eye’ of the storm, which is well known for being eerily calm compared with the areas under the spinning ‘arms’ of the storm.

Detailed explanation-5: -Tropical Depression: A tropical cyclone with maximum sustained winds of 38 mph or less. Tropical Storm: A tropical cyclone with maximum sustained winds of 39-73 mph. Hurricane: A tropical cyclone with maximum winds greater than 74 mph. Major Hurricane: A tropical cyclone with maximum winds greater than 111 mph.

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