Term
| The divergent quadrants of a jetstreak are its ____ and _____ quadrants |
|
Definition
|
|
Term
| how does Newtons first law of motion relate to the atmosphere? |
|
Definition
| air molecules moving in the atmosphere will continue to move at constant speed in a straight line as long as no net force is exerted on the molecule. |
|
|
Term
|
Definition
| zero at the equator, due to the rotation of the earth, and stronger when the winds are faster, except at the equator |
|
|
Term
| _____ is the weight of the air above a unit area. |
|
Definition
|
|
Term
| convergence into an air colum ____ mass to the colum resulting in _____ surface pressure. |
|
Definition
|
|
Term
| the coriolis force is always directed to the ____ of the motion in the ____ hemisphere. |
|
Definition
|
|
Term
| what is the term used to describe the net inflow of air molecules into a region of the atmosphere with the result of increasing the surface pressure? |
|
Definition
|
|
Term
|
Definition
| is not a valid approximation to air flow within the boundary layer |
|
|
Term
| air in low-pressure centers rises, leading to _____and ____ |
|
Definition
|
|
Term
| air in high pressure centers sinks, leading to _____ |
|
Definition
|
|
Term
| high-pressure systems are associated with ___ at the ___. |
|
Definition
|
|
Term
| what force counteracts the vertical pressure gradient? |
|
Definition
|
|
Term
| what is the term used to describe a region of exceptionally strong winds found within the jetstream? |
|
Definition
|
|
Term
|
Definition
| decreases surface wind speeds, ultimately leading to air flowing toward low-pressure centers |
|
|
Term
| the coriolis force is zero at the poles and maximum at the equator. T or F |
|
Definition
|
|
Term
| what type of surface pressure systems are typically associated with fair weather? |
|
Definition
|
|
Term
| in the northern hemisphere, the force of friction, along with the pressure gradient and coriolis forces, causes surface winds to blow ______ and ___ ___ the center of surface low-pressure systems. |
|
Definition
| counterclockwise/in toward |
|
|
Term
| air motions are driven by pressure differences that develop due to the uneven solar heating that occur across the earth's surface.T or F |
|
Definition
|
|
Term
| what term is used to describe the net-inward directed force found in symmetrically curved flow in the upper atmosphere? |
|
Definition
|
|
Term
| temperature increases with height in the troposhpere and decreases with height in the stratosphere.T or F |
|
Definition
|
|
Term
| the speed of the surface wind is dependent only on the pressure gradient force. T or F |
|
Definition
|
|
Term
| how does the average speed of air molecules influence the atmosphere? |
|
Definition
| it determines the air temperature |
|
|
Term
| except very near the earth's surface, the force of friction acts primarily through the mixing of air moving at different speeds. T or F |
|
Definition
|
|
Term
| the ___ is directed towards the center of the earth. |
|
Definition
|
|
Term
| the coriolis force increases as the wind speed increases, except directly on the equator where the CF is zero. T or F |
|
Definition
|
|
Term
| the angular momentum of air is the same everywhere on Earth. T or F |
|
Definition
|
|
Term
| what is in geostrophic balance, it must now ____ to isobars and be ___the boundary layer |
|
Definition
|
|
Term
| what is the ultimate driver of the Earth's weather? |
|
Definition
|
|
Term
| what type of surface pressure systems are typically associated with fair weather? |
|
Definition
|
|
Term
| the pole to equator temperature graident is much stronger in winter than in summer. therefore, the jetstream aloft will generally be much stronger. |
|
Definition
|
|
Term
| in clear skies at cruise altitudes, what type of turbulence most likely results in commerical aircrafts flights becoming "bumpy" and the pilot illumination? |
|
Definition
|
|
Term
| when to coriolis force balances the _____ the air is in geostraphic balance. |
|
Definition
| horizontal pressure gradient force |
|
|
Term
| the ___ causes air to slow down near the surface. |
|
Definition
|
|
Term
| the ____ is an apparent force associated with the rotation of the earth. |
|
Definition
|
|
Term
| the depth of the boundary layer will depend on the surface roughness, heating, atmospheric stability and wind speed. T or F |
|
Definition
|
|
Term
| the pressure gradient force is directed at a ___ to ___ |
|
Definition
|
|
Term
| the direction of wind id dependent upon all forces acting on it. T or F |
|
Definition
|
|
Term
| jetstreams are located at one latitude and one alitude in the upper atmosphere and do not influence storm systems at the surface. T or F |
|
Definition
|
|
Term
| at any particular time up to three jetstreams may be present at a given longitude. T or F |
|
Definition
|
|
Term
| which forces are in balance with respect to air motions within the boundary layer? |
|
Definition
| horizontal pressure gradient force, coriolis force, and frictional force |
|
|
Term
| what type of weather systems typically have the strongest horizontal pressure gradients found on earth? |
|
Definition
|
|
Term
| geostaphic balance exists when the horizontal pressure gradient force is equal in magnitude and opposite in direction to the coriolis force. T or F |
|
Definition
|
|
