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Keys for Online Quizzes

 

Climate Controls and Classification Quiz:

In general, at higher latitudes the temperatures overall are _____ and the temperature range from summer to winter is _______.
warmer, larger
warmer, smaller
cooler, larger
cooler, smaller
 

 

What is the difference between "steppe" and "tundra"?
Steppe is a tall-grass prairie, much like savanna, whereas tundra is a northern forest.
Steppe is a dry, short-grass prairie, whereas tundra is characterized by deep ice sheets and no vegetation.
Steppe is a short-grass prairie in a dry climate, whereas tundra is characterized by permafrost and same, short-lived vegetation.
TRICK QUESTION: "Steppe" and "tundra" are two words for the same thing.
 

 

Which climate type describes the largest fraction of the earth's surface?
Type A
Type B
Type C
Type D
 

 

Omaha and San Francisco are at approximately the same latitude, but Omaha has much colder winters than San Francisco does. Why?
Sun angles are higher in San Francisco than they are in Omaha.
Sun angles are higher in Omaha than they are in San Francisco.
San Francisco has a marine climate, while Omaha has a continental climate.
San Francisco is under the ITCZ, whereas Omaha is under a subtropical high.
 

 

If a region has muggy summers and mild winters, it has a type ____ climate.
A
B
C
D

 

Weather Modification Quiz:

At one time, scientists hoped to be able to weaken hurricanes by spreading a foam on the surface of the ocean. How was this supposed to weaken a hurricane?
By increasing the friction at the surface of the ocean.
By decreasing the friction at the surface of the ocean.
By increasing the rate of evaporation at the surface of the ocean.
By decreasing the rate of evaporation at the surface of the ocean.
 

 

In order for "cloud seeding" to be effective, _________.
the cloud must be made primarily of supercooled water droplets.
the cloud must be made primarily of ice crystals.
the sky must be clear.
the temperature in the cloud needs to be above 0 degrees Celsius.
 

 

These days, the mission of the "hurricane hunter" aircraft is to _________.
weaken the hurricane by overseeding the thunderstorms in the eyewall of the hurricane.
weaken the hurricane by using cloud seeding to enhance the thunderstorms in the outer rain bands.
increase public awareness of hurricane structure.
take observations of the hurricane in order to improve forecasts of the hurricane.
 

 

How do "smudge fires" prevent frost in an orchard?
By covering the fruit with a protective layer of hot ash.
By heating the orchard directly with the flames of the fires.
By giving off smoke that absorbs longwave radiation emitted by the ground and then re-emitting it towards the ground.
By mixing warm air from above the trees with the cold air near ground level.
 

 

Spraying water onto an orchard on a frosty night protects the fruit from damage because ____________.
as the water freezes it releases latent heat.
the water is heated before spraying it onto the fruit.
the water contains a type of antifreeze.
TRICK QUESTION Spraying water on the trees INCREASES the risk of frost damage to the fruit.

 

 

Forecasting Quiz:

Suppose that the average high for the last 30 years on December 2 in Omaha was 38 degrees F. If you predict that today's high will therefore be 38 degrees F, you are making a ___________ forecast.
trend
climatology
persistence
ensemble
 

 

One of the seven primitive equations is called Continuity. Continuity describes __________.
changes in temperature based on conduction, convection, and radiation
changes in pressure based on changes in temperature and density
how convergence and divergence at the surface and aloft are related to vertical motion
how water vapor is converted between vapor, liquid, and ice states by various processes in the atmosphere
 

 

Broadcast meteorologists typically ___________.
purchase their forecasts from companies such as Accuweather
run global computer models to forecast the weather
issue Tornado Warnings when the general conditions are favorable for development of tornadic thunderstorms
hold Ph.D. degrees in numerical weather prediction
 

 

Computer programs that can simulate the behavior of the real atmosphere are called __________.
pibals
forecasters
models
first-person shooters