Station model, Isobars, and Fronts
Name: _________________________________________________ Date: ________ Period: _________
Instructions: Write the letter of your answer on the space before the number.
Use the station model on the left to answer questions 1-4.
___1. Which direction is the wind?
A. northeast
B. northwest
___2. The temperature is ______.
A. 77
B. 76
C. 55
C. southeast
D. 138
___3. The air pressure is _______ mb or millibars.
A. 913.8
B. 135
C. 55
D. 1013.8
___4. The sky cover is _________.
A. completely overcast
B. clear sky
C. cloudy
___5. How are hurricanes and tornadoes related to air masses?
A. They form where air masses meet.
B. They form where air pressure is the same.
___6. On an August afternoon in North Carolina, the barometric pressure is 29.92 inches and falling.
What weather condition is likely to happen?
A. clearing skies
B. an imminent storm
___7. How are isotherms and isobars different from each other?
A. Isotherms are lines of equal temperature, isobars are lines of equal elevation.
B. Isotherms are lines of equal temperature, isobars are lines of equal pressure.
___8. What is the major difference between weather and climate?
A. air temperature
B. air pressure
C. time
Use the choices below to answer questions 9-12
A. an instrument used to measure air pressure.
B. The air pressure decreases.
C. Clear sky or good weather.
D. Precipitation or bad weather.
___ 9. What happens to air pressure as we go higher up in the atmosphere?
___10. What is a barometer?
___11. What does it mean by low pressure (L)?
___12. What does it mean by high pressure (H)?
Use the choices below to answer questions 13-16
A. 1013 mb
C. Air pressure above 1013
B. Air pressure below 1013
D. 4 mb
___13.
___14.
___15.
___16.
What is the average atmospheric pressure?
What are low pressures?
What are high pressures?
What is the interval between isobars?
Use the figure below to answer the questions 17-20
___17. The air pressures in the high pressure area are_.
A.
1016, 1020, 1024
B.
1016, 1012, 1008
___18. The air pressures in the low pressure area are_.
A. 1016, 1020, 1024
B. 1016, 1012, 1008
___ 19. Low pressure areas spin_____.
A. Clockwise
B. counterclockwise
___ 20. High pressure areas spin_____.
A. Clockwise
B. counterclockwise
Use the choices below to answer questions 20-24
A. are lines of constant pressures.
C. high pressure to low pressure
B. Strong winds
D. Light winds
___21. What kind of wind is present when isobars are close together?
___22. What kind of wind is present when isobars are wider apart from one another?
___23. In what direction does wind blows?
___24. What are isobars?
Use the chart below to answer questions 25-28
___25.What kind of front is approaching
North Carolina?
A. cold front
B. Warm front
___26. What kind of weather is
expected in North Carolina?
A. clear skies
B. moderate rain
___27. Which state has clear weather?
A. Nevada
B. North Carolina
___28. Which front is faster?
A. warm front
B. cold front
Extra Credit ( 5 points )
How do we use isobars to predict the weather?
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