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WX0303 · Global Weather Patterns

22 questions · 22 multiple choice · 0 written · ASA 109 Marine Weather — Global Weather Patterns

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Q1
The horse latitudes are regions of ...?
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This is almost a tricky question if you know too much.

Q2
In regions near the poles, the winds are generally described as ...?
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If we were right at the pole, could we rule out any answers with a simple philosophical argument.

Q3
The primary wind belt which has the greatest effect on the set, drift, and depth of the equatorial currents are the ...?
Q4
Steady winds in one direction for six months followed by wind reversal for the next six months, would be characteristic of what global wind pattern?
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The wind directions referred to are NE and SW.

Q5
The consistent winds blowing from the horse latitudes to the doldrums are called the ...?
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Horse latitudes are Highs, doldrums are Lows.

Q6
What are the best signs that you have reached the trade winds when headed toward the equator?
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Trade-wind cumulus are low small puffy white clouds often seen at night as well as day.

Q7
When you rise in the atmosphere in the Northern Hemisphere, going up from the surface...
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Both of these properties can have direct affect on what we experience on the surface.

Q8
In the North Atlantic and Pacific between latitudes 5° and 25°, the winds you would expect to encounter are known as the ...?
Q9
Which cloud type is most characteristic of stable air?
Q10
The force resulting from the earth’s rotation that causes winds to deflect to the right in the northern hemisphere and to the left in the southern hemisphere is called the ...?
Q11
When it comes to figuring the likelihood of fog, which is the best to know about the atmosphere
Q12
Air found in your kitchen freezer would be of which type?
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Clearly we need to know what the letters stand for in these air mass symbols.

Q13
Air masses are most often formed...
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They could be formed in other situations, but which is most likely?

Q14
The Gulf Stream is often marked by each of these characteristics, but which is the most common and dependable indicator?
Q15
The typical Gulf Stream (Florida Current) off the east coast of Florida could be described as...
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For Atlantic sailing this is one of the fundamental currents to know about.

Q16
When sailing from West Palm Beach Florida toward Grand Bahama Island located some 70 nmi to the east, how far offshore could you expect to first run into the Gulf Current (Florida Current)?
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We are asking here for the first indications of the stream, not the axis or center.

Q17
Waves in the winds aloft are named after
Q18
If the winds aloft (in the mid and upper latitudes of the Northern Hemisphere) are from the SW at this moment, what might be a likely time period for them to change and be from the west?
Q19
The cloud base of building cumulus clouds (in thousands of feet) can be figured by dividing the difference between surface temperature and dew point (in ºF) by
Q20
The earth’s uneven heating is caused by ...?
Q21
Weather in the middle latitudes generally travels from ...?
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The implication is that moving weather is moving air masses.

Q22
What type of air would you expect the trade winds over Hawaii to be?
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Air masses are named after their properties which reflect their origins.