Term
| What is the weight of all of the atmospehere's gases and molecules on the Earth's surface? |
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Definition
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Term
| What is a scale for estimating wind speed, on land or sea? |
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Definition
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Term
| What is the total energy of all molecules within a substance? |
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Definition
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Term
| What is a measure of molecular motion expressed on a man-made scale? |
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Definition
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Term
| What is a body of air in motion? |
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Definition
|
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Term
| How is wind direction defined? |
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Definition
| the direction from which the wind is blowing? |
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Term
| How is wind speed expressed in the US? |
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Definition
| in either miles per hour or knots |
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Term
| What is a common nautical and aviation term? |
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Definition
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Term
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Definition
| one nautical mile per hour |
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Term
| What speed is the wind blowing if a flag is flying fully extended from the flag pole? |
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Definition
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Term
| What uses temperature and wind speed to explain how cold it feels? |
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Definition
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Term
| Why do airplaines takeoff into the wind? |
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Definition
| because it gives the plane more lift |
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Term
| What is defined as a downdraft or downburst? |
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Definition
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Term
| What are the three man-made scales used for measuring temperature? |
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Definition
| Fahrenheit, Celsius or Kelvin |
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Term
| What occurs when the body temperature drops below 95 degrees and can cause unconsciousness or death? |
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Definition
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Term
| What is the weight or push on the Earth's surface called? |
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Definition
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Term
| What are the three ways air pressure can be measured? |
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Definition
1) aneroid barometer
2) mercury barometer
3) aneroid barograph |
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Term
| Which type of pressure instruments gives a permanent record of pressure readings? |
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Definition
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Term
| What is the freezing point for water on a Fahrenheit scale? |
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Definition
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Term
| What is the boiling point for water on a Fahrenheit scale? |
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Definition
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Term
| What is the freezing point for water on a celsius scale? |
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Definition
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Term
| What is the boiling point of water on a Celsius scale? |
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Definition
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Term
| What is the freezing point of water on the Kelvin scale? |
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Definition
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Term
| What is the boiling point for water on a Kelvin scale? |
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Definition
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Term
| What causes an object moving freely in the Northern Hemisphere to be deflected to the right of its intended path? |
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Definition
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Term
| What is a strong wind that develops at 30,000-50,000 feet and moves across the U.S. generally from the west to the east? |
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Definition
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Term
| What is the method by which the sun heats the Earth? |
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Definition
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Term
| What is the movement of the Earth revolving around the sun? |
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Definition
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Term
| What is the angle of the axis which the Earth roates on as it revolves around the sun? |
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Definition
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Term
| What is it called when the sun is at its northenmost point from the equator in the Northern Hemisphere? |
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Definition
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Term
| What is it called when the sun's direct rays strike the equator resulting in a day and night of equal length, usually on Sept 22nd or 23rd? |
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Definition
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Term
| What is it called when the sun's direct rays strike the equator resulting in day and night of equal length usually on March 21st or 22nd? |
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Definition
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Term
| What is it called when the sun is farthest south of the equator and the Northern Hemisphere resulting in the shortest day of the year in the Northern Hemisphere? |
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Definition
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Term
| What is it called when the sun is farthest south of the equator, resulting in the shortest day of the year in the Northern Hemisphere? |
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Definition
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Term
| What is the fundamental cause of various weather conditions on Earth? |
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Definition
| The sun heating the Earth |
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Term
| What is the cause of temperature and pressure differences on earth? |
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Definition
| uneven or unequal heating of the Earth by the Sun |
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Term
| What creates circulation or movement of air? |
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Definition
| temperature and pressure differences |
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Term
| What initiates the whole weather process? |
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Definition
| circulation or movement of air |
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Term
| Through what method does the sun heat the Earth? |
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Definition
|
|
Term
| Approximately how much of the sun's radiation is absorbed by the Earth's surface? |
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Definition
|
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Term
| How much of the sun's radiation is reflected and absorbed in the atmosphere and space? |
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Definition
|
|
Term
| How much solar radiation is reflected from clouds? |
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Definition
|
|
Term
| How much of solar radiation is scattered to space by the atmosphere? |
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Definition
|
|
Term
| How much solar radiation is absorbed by the atmosphere? |
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Definition
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|
Term
| Airplane engines work more efficiently in what type of weather? |
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Definition
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Term
| What are the two motions the Earth has that effect the amount of heat received from the sun? |
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Definition
|
|
Term
| How much time does it take for the Earth to revolve around the sun? |
|
Definition
| 365 days, 5 hours and 48 minutes |
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Term
| What direction does the Earth rotate on its axis? |
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Definition
|
|
Term
| Unequal heating caused by air movement is caused what? |
|
Definition
| general circulation of the atmosphere |
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Term
| What region of the Earth receives most of the sun's heat? |
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Definition
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Term
| At what degree North and South of the equator does warm air begin to cool and sink? |
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Definition
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|
Term
| Where does most of the cooling, sinking air move back to the equator? |
|
Definition
| between 30 degree latitude and the equator |
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|
Term
| What are air movements towards the equator called? |
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Definition
|
|
Term
| What are warm, steady breezes that blow almost continuously? |
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Definition
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Term
| What makes the trade winds appear to be curving to the west, when they are actually traveling toward the equator from the south to the north? |
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Definition
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|
Term
| What is the area of calm where converging trade winds produce general upward winds as they are heated? |
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Definition
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Term
| What are the winds that move toward the poles appear to curve to the east between 30 and 60 degrees? |
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Definition
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Term
| What are responsible for many of the weather movements across the U.S. and Canada? |
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Definition
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Term
| What are formed when the atmospehre over the poles cools then sinks and spreads out over the surface? |
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Definition
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Term
| At about what latitude in both hemispheres do the prevailing westerlies join with polar easterlies to produce upward motion? |
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Definition
| at about 60 degrees latitude |
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Term
| What develops when there are strong temperature differences in the upper troposphere? |
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Definition
|
|
Term
| What is the process of converting water vapor to liquid? |
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Definition
|
|
Term
| What is the temperature at which the air becomes saturated? |
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Definition
|
|
Term
| What are tiny droplets of liquid water in contact with the surface? |
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Definition
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|
Term
| What is a general term given to various types of condensed water vapor? |
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Definition
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|
Term
| What is a parcel of air holding as much water vapor as it can? |
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Definition
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Term
| What is the amount of water vapor in the air compared to its water vapor capacity at a given temperature? |
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Definition
|
|
Term
| What are the three states moisture exists in? |
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Definition
|
|
Term
| What is moisture called when it is in a gaseous state? |
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Definition
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|
Term
| What is the term used for the amount of water vapor in the air? |
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Definition
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Term
| What generally forms when the temperature and dew point are within five degrees of each other and the winds are light (five knots or less)? |
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Definition
|
|
Term
| What are the three basic cloud forms? |
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Definition
| cumulus, stratus and cirrus |
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|
Term
| How are clouds classified? |
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Definition
| by their appearance and height |
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Term
| Which type of cloud can be described as white billowy, puffy clouds? |
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Definition
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|
Term
| What type of clouds has a uniform appearance, it is thin with very little vertical temperature? |
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Definition
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|
Term
| Which type of clouds are very high, can be described as white, thin and wispy and are mainly composed of ice crystals? |
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Definition
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|
Term
| What type of cloud prduses rain that can last for hours? |
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Definition
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|
Term
| What type of cloud only produces thunder and lightning? |
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Definition
|
|
Term
| What type of cloud produces tornadoes? |
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Definition
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|
Term
| What formation occurs at the base of a cumulonimbus cloud and indigates the degree of instability in the area? |
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Definition
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|
Term
| What is an unrest or disturbance of the air? |
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Definition
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|
Term
| What is defined as warm air rising? |
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Definition
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|
Term
| What is precipitation that falls to the ground but freezes upon contact with various surfaces, such as the ground, a highway or cars? |
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Definition
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|
Term
| What is the most important element when it comes to developing weather? |
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Definition
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|
Term
| What is a huge body of air with the same temperature and moisture characteristics? |
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Definition
|
|
Term
| What is a boundary between two air masses? |
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Definition
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|
Term
| What is a tropical cyclone of low pressure and very strong winds? |
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Definition
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|
Term
| What is a cumulonimbus cloud possessing thunder and lightning; usually strong winds, rain and sometimes hail? |
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Definition
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|
Term
| What is a whirling funnel of air of very low pressure and very strong winds? |
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Definition
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|
Term
| What is a air mass' place of origin called? |
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Definition
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|
Term
| What is identified by a two-letter code consisting of a lowercase letter and a capital letter? |
|
Definition
|
|
Term
| What are the two possible lowercase letters for an air mass source code? |
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Definition
1) m (maritime)
2) c (continental) |
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|
Term
| What are the four possible capital letters for an air mass source code? |
|
Definition
1) polar (P)
2) artic (A)
3) tropical (T)
4) equatorial (E) |
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|
Term
| What are the four classifications for Fronts? |
|
Definition
1) warm
2) cold
3) stationary
4) occluded |
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