Meteorology Review Sheet Answers

The for main layers of the atmosphere are troposphere stratosphere mesosphere thermosphere

What are the main gases in the atmosphere? Nitrogen – 78% Oxygen – 21% Argon - .934 % Carbon Dioxide - .036%

3. Review the 10 types of clouds

Cumulus = puffy Cirrus = wispy Cirro = high level Alto – middle level Nimbus = rain                                                               Alto cumulus Stratus = layers Strato = low level

4. Define the following words Hydrosphere – all the water on Earth – solid, liquid and gas Relative Humidity – amount of water vapor in air compared to amount the air could hold. Dew Point – temperature at which condensation occurs Saturated Air – Air is holding all the water vapor it can hold (RH = 100%) Sling psychrometer – instrument used to find dew point and relative humidity Condensation nuclei – particles around which condensation occurs – needed to form clouds

5. Use the charts on page 704 to answer: Dry Bulb = 24 Wet bulb = 21 Dry Bulb = 16 Wet bulb = 10 Depression = Dew Point = Relative Humidity = 3 20 76% 6 4 45% Depression = Dew Point = Relative Humidity =

6. What is air pressure? Air pressure is the weight of the air pushing on earth’s surface.

7. Air pressure is measured with a barometer 7. Air pressure is measured with a barometer. The 2 types are aneroid and mercury.

8. How does air pressure change with altitude? Air pressure decreases as altitude increases.

9. Put an H or L next to each description of pressure characteristics below. Cold temperatures Rising air Poor weather Warm temps Fair weather Air moving in Air moving out Rising barometer H L

10. A line connecting points of equal pressure is an isobar 10.A line connecting points of equal pressure is an isobar. They are 4 mb apart.

11. Label the lines below and draw in the movement of the wind. 1004 1004 1000 1008 H L 996 1012

Winds always moves from high pressure to low pressure Winds always moves from high pressure to low pressure. They are named according to the direction they come from. 13. Winds curve due to the Coriolis Effect. This is caused by Earth’s rotation. In the northern hemisphere, winds curve to the right and in the southern hemisphere, they curve to the left.

14. Label the pressure belts

14. Label the wind belts

16. What wind moves weather across the United States? Prevailing westerlies and the Jet Stream

17. What is an air mass? A body of air with the characteristics of the area it forms over.

18. Fill in the table below on air masses.   Name Temp Moisture Where formed Area affected cP Continental polar Cold Dry On land, near the poles Northern central US cT Continental tropical Warm On land near the equator Southern central US mP Maritime polar Wet Over water near the poles Northeastern and northwestern US mT Maritime tropical Over water near the equator Southeastern and southwestern US    

19. What is a front. A front is the boundary between 2 air masses 19. What is a front? A front is the boundary between 2 air masses. They move west to east across the US    

20. Warm Front    

20. Cold Front    

20. Stationary Front    

20. Occluded Front    

21. A weather pattern frequently experienced by the United States due to the boundary between the polar easterlies and the prevailing westerlies is a traveling cyclone.    

Review! The 3 types of heat transfer are: Conduction- due to contact, like touching a hot stove Convection- due to differences in density (lava lamp) Radiation – by electromagnetic waves – like the energy that comes from the sun

What is the coldest part of the day? What is the warmest part of the day?

Stations Models Wind dir and speed Air temp Pressure Dew point Sky coverage

Good luck on the test!