Exam (elaborations)
Meteorology Questions with Correct Answer2.
- Course
- Institution
Meteorology Questions with Correct Answer2.
[Show more]
Content preview
Meteorology Questions with Correct AnswersWeather Correct Answer-refers to the state of the atmosphere (physical
conditions) at any given time or place
Climate Correct Answer-describes the "average weather" of a region
The standard averaging period is 30 years according to the WMO
What is the most abundant gas in the atmosphere? Correct Answer-
Nitrogen
What are the major components of the atmosphere? Correct Answer-
nitrogen: 78%
oxygen: 21%
trace gasses (includes argon, carbon dioxide): 1%
What are the variable components of the atmosphere? Correct Answer-
water vapor
dust vary in both space and time
ozone
Is air considered an element, molecule, or mixture? Why? Correct
Answer-mixture because its composition varies, and the constituents can
be separated
contains many different elements (hydrogen, oxygen, nitrogen) AND
molecules (H2O, N2, O2, CO2).
,What is ozone, and why is it important? Correct Answer-The oxygen gas
that we breathe: O2
Ozone: O3
- Concentrated at 10-15 km above Earth's surface because there is
sufficient UV radiation to break up O2 molecules
- Absorbs most UV rays before they reach Earth's surface
Formation of Ozone:
1) High-energy UV rays strike an O2 molecule
2) The O2 molecule splits
3) The free oxygen atoms collide with O2 molecules
4) Ozone molecules are formed
Describe the temperature trends of the four layers of the atmosphere,
starting at Earth's surface. Correct Answer-Troposphere
- The weather layer
- Temperature decreases with height
Stratosphere
- Has stable air layers, hosts most of the ozone
- Temperature increases with height
Mesosphere
- Where meteors start burning
- Temperature decreases with height
Thermosphere
, - Very little mass (less than 1% of all gas in the atmosphere)
- Temperature increases with height
What is the difference between the "atmosphere" and "space"? Correct
Answer-The boundary between the atmosphere and space is not sharp
The concentration of gas particles decreases with height until there are
too few to detect
How do you think air pressure changes with altitude? Why? Correct
Answer-Atmospheric pressure is the weight of the air above
50% of the gasses that make up the atmosphere lie below an altitude of
5.6 km.
At sea level, atmospheric pressure is about 1013 millibars (mb). This is
equivalent to 1 ATM, or 14.7 psi
How do you think air temperature changes with altitude? Why? Correct
Answer-In the layer of the atmosphere closest to Earth (troposphere),
temperature decreases with height
Not all atmospheric layers show this pattern
Explain why temperature varies with altitude (e.g. Why does
temperature decrease with height in the troposphere and mesosphere?
Why does temperature increase with height in the stratosphere and
thermosphere?) Correct Answer-As you increase in elevation, there is
less air above you thus the pressure decreases. As the pressure decreases,
air molecules spread out further (i.e. air expands), and the temperature
decreases
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 cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
50843 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now