AY Honors/Weather - Advanced/Answer Key
1. Have the Weather Honor.
2. Explain cyclonic and anticyclonic weather conditions and know how they bring about weather changes.
3. What are cold fronts and warm fronts? How do they move and what weather conditions do they produce?
4. Explain the following weather conditions:
a. Chinook winds
b. Trade winds
c. Belt of calms
d. Tornadoes
e. Squall line
f. Typhoons
g. Hurricanes
h. Blizzards
i. Ice storm
5. Explain the action of a registering thermometer, registering barograph, hygrometer, and an anemometer.
6. Correctly read a daily weather map as published by the National Weather Service, explaining the symbols and telling how predictions are made.
7. What is meant by relative humidity and dew-point?
The amount of water that air can hold depends on the temperature. The hotter it gets, the more water the air can hold. At any given temperature, the air can become so saturated with water that it cannot hold any more. Water will not evaporate under this condition.
The ratio of how much water is in the air compared to how much could be in the air is the relative humidity. The relative humidity is 100% when the air can hold no more water.
Recall that the air can hold more water when it is warm as compared to when it is cold. Therefore, if the temperature changes while the amount of water in the air remains constant, the humidity will change. As the air warms, the relative humidity will drop. As it cools, the relative humidity will rise.
The dew point is the temperature for which the relative humidity will be 100% assuming the amount of water in the air remains unchanged. If the temperature drops below the dew point, the air will no longer be able to hold all the water, so it condenses out in the form of dew or fog.
