Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chapter 5
| Question | Answer |
|---|---|
| The magnitude of pressure exerted by the gas molecules composing air depends on | all of the above |
| Usually, the air pressure inside a building is _____ the air pressure outside the building. | about the same as |
| So that barometer readings are accurate and representative, | the instrument may be mounted indoors. |
| The average air pressure at sea level is | All of these are correct. |
| The usual world-wide range in sea-level air pressure is ______ 100 mb. | less than |
| Between the tropopause and stratopause, the air pressure ______ with increasing altitude. | decreases |
| The top of the atmosphere is at an average altitude of __________ km. | none of these is correct |
| What fraction of the atmosphere's mass is below an aircraft flying at the 600 mb level? | .4 |
| What fraction of the atmosphere is below the 500 mb level? | .5 |
| The state of the atmosphere averaged for all latitudes and seasons is known as | the standard atmosphere. |
| The elevation of the 500-mb surface | all the above are correct. |
| At an altitude of about 3.5 mi above sea level, the air pressure is approximately | 500 mb |
| At sea level, the pressure of the atmosphere is | the greatest |
| The type of barometer that is used to measure altitude: | aneroid |
| A(n) ______ can be used to predict the weather by keeping track of the air pressure tendency. | narometer |
| An air-pressure altimeter is actually a(n) ______ barometer. | aneroid |
| Within the thermosphere, the temperature is ______ and heat energy is ______. | high...low |
| When air pressure readings at Denver (the "mile-high city") are adjusted to sea level, barometric pressure readings are | increased |
| Adjusting barometer readings to sea level removes the influence of ______ on air pressure. | station elevation |
| Changes of air pressure in the horizontal are ______ they are in the vertical. | much smaller than |
| An air mass is a huge volume of air that is relatively uniform horizontally in | Both of these are correct. |
| Air pressure decreases ______ with increasing altitude. | non-uniformly |
| The concentration of oxygen (O2) in parts per million by volume ______ with increasing altitude within the troposphere. | decreases |
| The temperature of rising parcels of unsaturated air __________ because of __________. | drops. . . . . .expansional cooling |
| At the same pressure, ______ air is less dense then______ air. | warm, dry......cold, dry |
| At the same pressure, warm and humid air is ______ equally warm and dry air. | less dense than |
| At the same temperature and pressure, humid air is ______ dry air. | less dense than |
| Relatively high surface air pressure is usually accompanied by ______ weather whereas relatively low surface air pressure is usually accompanied by ______ weather. | fair....stormy |
| The tropopause at a particular location is generally ______ in winter than in summer. | lower |
| If the surface air pressure is the same everywhere, but a mass of cold air is situated next to a mass of warm air, the pressure at high altitudes is | greater in the warm air. |
| With the same volumes, a cold and dry air mass exerts ______ surface air pressure than a warm and humid air mass. | higher |
| With the same volumes, a warm and dry air mass exerts ______ surface air pressure than an equally warm but humid air mass. | higher |
| When a warm and humid air mass replaces a cold and dry air mass at a particular locality, the air pressure at Earth's surface usually | falls |
| The decline of air pressure with altitude is most rapid in ______ air masses. | cold and dry |
| Because of the usual seasonal change in average temperature, the troposphere is denser in __________ than in __________. | winter......summer |
| Compared to horizontal pressure gradients, vertical pressure gradients are | much greater |
| Changes in air pressure with time at a particular locality may be explained by | all of the above |
| With cold air advection in winter, the air pressure tendency is usually | upward |
| Air pressure tendency is usually _____ with warm air advection in the winter. | downward |
| Two weather stations (A and B) at sea level report the same surface air pressures. Warm air is above Station A while relatively cold air is above Station B. At an altitude of 25,000 feet, one would expect the pressure above Station A to be | higher than that above Station B. |
| Highs and Lows are identified on surface weather maps by areas enclosed within isobars. Which one of the following statements about Highs is true? | Air pressure decreases outward from the center of a High. |
| Lows and Highs are identified on surface weather maps by areas enclosed within isobars. Which one of the following statements about Lows is true? | Air pressure increases outward from the center of a Low. |
| A variable of state in the atmosphere: | All of these are correct. |
| Air pressure ______ decreases with altitude in the atmosphere. | Always |
| According to the gas law, air pressure is directly proportional to | both of these are correct |
| As a mass of arctic air invades our locality, air temperature ______ and air density ______. | falls....increases |
| As a mass of warmer and more humid air invades our locality, air temperature _____ and air density _____. | rises......decreases |
| Rising parcels of unsaturated air cool at a _________ rate than rising parcels of saturated (cloudy) air. | faster |
| The _________ adiabatic lapse rate is 9.8 Celsius degrees per 1000 m. | dry |
| Descending air warms at | all of the above are correct |
Created by:
Holo_Wise_Wolf
Popular Earth Science sets