FORESTRY
PLANT AND WOOD ANATOMY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
warm ocean water
|
|
|
a strong cold front
|
|
|
cold ocean water
|
|
|
a strong warm front
|
Detailed explanation-1: -The first condition is that ocean waters must be above 26 degrees Celsius (79 degrees Fahrenheit). Below this threshold temperature, hurricanes will not form or will weaken rapidly once they move over water below this threshold.
Detailed explanation-2: -It must be in sufficiently warm sea surface temperatures, atmospheric instability, high humidity in the lower-to-middle levels of the troposphere, have enough Coriolis effect to develop a low pressure center, a pre-existing low level focus or disturbance, and a low vertical wind shear.
Detailed explanation-3: -Surface atmospheric pressure in the center of a hurricane tends to be extremely low. The lowest pressure reading ever recorded for a hurricane (typhoon Tip, 1979) is 870 millibars (mb). However, most storms have an average pressure of 950 millibars.