NIFE WEATHER UPDATED Questions and CORRECT Answers
0 view 0 purchase
Course
NIFE WEATHER
Institution
NIFE WEATHER
NIFE WEATHER UPDATED Questions
and CORRECT Answers
What is the composition of dry air? - CORRECT ANSWER- 78% nitrogen
21% oxygen
1% mixture of 10 other gases
How much of the atmosphere, by volume, is composed of water? - CORRECT ANSWER-
0 to 5%
NIFE WEATHER UPDATED Questions
and CORRECT Answers
What is the composition of dry air? - CORRECT ANSWER- ✔✔78% nitrogen
21% oxygen
1% mixture of 10 other gases
How much of the atmosphere, by volume, is composed of water? - CORRECT ANSWER-
✔✔0 to 5%
What are condensation nuclei? - CORRECT ANSWER- ✔✔-Nongaseous substances such as
dust and salt particles, pollen, etc
-Water molecules condense on these particles and form clouds
What layer of the atmosphere is adjacent to the Earth's surface? - CORRECT ANSWER-
✔✔Troposphere
List some characteristics of the troposphere. - CORRECT ANSWER- ✔✔-Adjacent to
Earth's surface
-Average height of 36,000'MSL above the US
-Becomes less dense with altitude
-Temperature decreases with increasing altitude
-Nearly all weather occurs here
-Wind velocity increases with altitude
What is the tropopause and where is it found? - CORRECT ANSWER- ✔✔-Transition zone
between the troposphere and
stratosphere
-Temperature is constant with altitude
-Jet stream occurs right below (strongest winds)
,Define Atmospheric Pressure (Barometric Pressure) - CORRECT ANSWER- ✔✔-Pressure
exerted on a surface by the atmosphere due to the weight of the column of air directly above
that surface
-Pressure always decreases with altitude (decreases more rapidly at lower altitudes because of
decreasing density)
What are the two units of measurement for atmospheric pressure? - CORRECT ANSWER-
✔✔-in-Hg: measure of the height of a column of mercury that can be supported by
atmospheric pressure
-Millibar: direct representation of pressure (force/unit area)
-Normal sea level pressures range from 28-31 in-Hg (960-1060mb)
Surface analysis charts use _______ as the reference pressure level for isobars. - CORRECT
ANSWER- ✔✔-MSL barometric pressure (to provide a common reference)
-Allows meteorologists to track weather systems as they move across the country
What type of vertical atmospheric circulation is associated with a high-pressure system? -
CORRECT ANSWER- ✔✔Air will descend (downward force exerted by high pressure) and
diverge, which produces wind
What type of vertical atmospheric circulation is associated with a low-pressure system? -
CORRECT ANSWER- ✔✔Air will ascend (insufficient pressure to keep air at the surface)
and try to converge at the center of the low-pressure, which also produces wind
What effect does the Coriolis Force have on wind as it moves horizontally into/out of
high/low pressure systems? - CORRECT ANSWER- ✔✔-Wind will circulate as it moves out
of a High-pressure system and into a Low-pressure system
-Clockwise out of a high-pressure system (in the northern hemisphere)
-Counterclockwise into a low-pressure system (in the northern hemisphere)
, What does the spacing of isobars indicate? - CORRECT ANSWER- ✔✔-Rate of pressure
change over a horizontal distance
-Closer the spacing, the greater the change
-Pressure Gradient Force
What is the pressure gradient defined as? - CORRECT ANSWER- ✔✔-The rate of pressure
change in a direction perpendicular to the isobars
What is the initiating force of all winds? - CORRECT ANSWER- ✔✔Pressure Gradient
Force
When isobars are close together, the Pressure Gradient Force is ______, and when isobars are
far apart, the Pressure Gradient Force is _______________. - CORRECT ANSWER-
✔✔greater/steeper
more shallow/weaker
What are the conditions of a standard day? - CORRECT ANSWER- ✔✔-29.92 in-Hg
(1013.2mb)
-15 deg C (59F)
-Standard day conditions at sea level
What is the standard lapse rate for pressure and temperature? - CORRECT ANSWER- ✔✔-A
1,000' increase in altitude will cause.....
Pressure to decrease by 1.0 in-Hg (34mb)
Temperature to decrease by 2 deg C (3.57F)
What is an isothermal lapse rate and where can it be found? A thermal inversion lapse rate? -
CORRECT ANSWER- ✔✔-Isothermal: temperature remains the same for different altitudes
(tropopause)
-Inversion: temperature increases with altitude (stratosphere)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MGRADES. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
