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Chapter 6

Chapter 6 Test

Chapter 6 Test

Complete the questions by selecting the correct response and then clicking on "Submit answers for grading" when completed.

This activity contains 23 questions.

	Average air pressure at sea level is about __________ pounds per square inch.   10.4 12.7 14.7 15.7 16.3

	An altimeter is an adaptation of the __________.   hygrometer aneroid barometer newton anemometer mercurial barometer

	When examining the behavior of gases, air pressure can be defined as the force exerted against a surface by the continuous collision of gas molecules.    True  False

	The mercury barometer is a small, portable instrument for measuring air pressure.    True  False

	Which one of the following would produce the greatest change in atmospheric pressure?   the difference between the highest and lowest recorded pressures at any one station on Earth a balloon ascent from sea level to 3 miles the difference in pressure between the inside and outside of a building a horizontal airplane flight of 200 miles an overland journey from the center of a high-pressure system to the center of a low-pressure system

	A cold, dry air mass has a lower air pressure than an equally cold, moist air mass.    True  False

	The "normal" decrease in pressure experienced with increased altitude is provided by the standard atmosphere, which depicts the idealized horizontal distribution of the atmospheric pressure.    True  False

	In calm air, two (2) factors that largely determine the amount of air pressure exerted by an air mass are ____________ and ____________.   temperature; humidity humidity; pressure differences saturation point; dew point vapor pressure; relative humidity

	The Coriolis effect is responsible for __________ of the wind.   increasing the speed changing the direction decreasing the speed the vertical component starting the motion

	Which one of the following statements concerning horizontal variations in air pressure is incorrect?   a cold, dry air mass will produce higher surface pressures than a warm, humid air mass given equal amounts of water vapor, a cold air mass will exhibit a higher pressure than a warm air mass a warm, dry air mass will exhibit higher pressure than an equally warm, but humid, air mass a cold, humid air mass will have a higher pressure than an equally cold, dry air mass a warm, humid air mass will have a lower air pressure than an equally warm, dry air mass

	Lines connecting places of equal pressure are called __________.   equanewts isograds gradients isohyets none of the above

	On a rotating Earth, Coriolis force acts to change the direction of a moving body to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.    True  False

	The magnitude of the Coriolis force is inversely proportional to wind speed.    True  False

	If the pressure gradient was the only force acting on the air, the air would move in a curved path.    True  False

	Label the diagam according to the wind directions. This question presents 5 items numbered 15.1 through 15.5. Each item is presented with a pulldown menu containing the letters A through E. For each item below, use the pull-down menu to select the letter that labels the correct part of the image. 15.1 south A B C D E 15.2 north A B C D E 15.3 northwest A B C D E 15.4 northeast A B C D E 15.5 southwest A B C D E

	Centers of low pressure are referred to as __________, while high pressures are frequently called __________.   cyclones; troughs anticyclones; cyclones anticyclones; ridges cyclones; anticyclones anticyclones; tornadoes

	Surface convergence about a cyclone causes a net __________ movement of air.   random upward outward downward none of the above

	If "fair weather" is approaching, the pressure tendency would most likely be __________.   steady, then falling falling steady rising, then falling rapidly rising

	A wind that blows more often from one direction than any other is called a geostrophic wind.    True  False

	Match the terms on the left with the correct description on the right. A matching question presents 4 answer choices and 4 items. The answer choices are lettered A through D. The items are numbered 20.1 through 20.4. Screen readers will read the answer choices first. Then each item will be presented along with a select menu for choosing an answer choice. Using the pull-down menus, match each item in the left column to the corresponding item in the right column. instrument to measure wind speed nature of the change of the barometer over the past several hours wind blowing more often from one direction than any other instrument to measure wind direction 20.1 wind vane   A B C D 20.2 cup anemometer   A B C D 20.3 prevailing wind   A B C D 20.4 barometric tendency   A B C D

	Assume the photo is of a Southern Hemisphere cyclonic event. Select the correct response using the drop-down menus. This question presents 4 items numbered 21.1 through 21.4. Each item is presented with a pulldown menu containing the letters A through D. For each item below, use the pull-down menu to select the letter that labels the correct part of the image. 21.1 Eye of hurricane A B C D 21.2 Eye wall A B C D 21.3 Northeasterly winds A B C D 21.4 Southwesterly winds A B C D

	The following figure illustrates idealized surface winds associated with two North American pressure centers. Using the figure, identify the indicated type of airflow by selecting the correct response. This question presents 2 items numbered 22.1 through 22.2. Each item is presented with a pulldown menu containing the letters A through B. For each item below, use the pull-down menu to select the letter that labels the correct part of the image. 22.1 Convergence aloft A B 22.2 Divergence aloft A B

	The following figure represents an idealized middle-latitude cyclone. Identify each of the following by selecting the correct response. This question presents 4 items numbered 23.1 through 23.4. Each item is presented with a pulldown menu containing the letters A through D. For each item below, use the pull-down menu to select the letter that labels the correct part of the image. 23.1 Region of greatest pressure gradient A B C D 23.2 Southwesterly winds A B C D 23.3 Easterly wind direction A B C D 23.4 Northwesterly wind direction A B C D

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