WX 201 Exam 2 with correct Answers (Graded
A)
An unsaturated air parcel cools or warms at what rate?
Dry adiabatic lapse rate (DALR)
A saturated air parcel cools or warms at which rate?
Moist adiabatic rate (MALR)
If the environmental lapse rate is greater than the dry adiabatic rate, the atmosphere is:
Absolutely unstable
Surface cooling and warm air advection aloft generally do what to the atmosphere?
Make it more stable
An air parcel starts to rise freely when it first becomes warmer than the environment at the:
Level of free convection (LFR)
Cloud bases form at the
Lifting Condensation level
(T/F) Mountain wave clouds are usually a sign of turbulent air
True
(T/F) In order to produce a cloud on the windward (upslope) side of a mountain orographic lift must
work together with convection
False
In the real atmosphere, which stability situation is most associated with thunderstorm development?
Conditionally unstable
Which processors do you stabilize the atmosphere?
A.) heating the surface
B.)cooling the air aloft
C.) Both A and B
D.) none of the above
C.) Both A and B
(T/F) An aneroid barometer (such as an altimeter) contains mercury
False
Which of the following is not often used as a unit of pressure in meteorology?
Millipascal
Hectopascal
Millibar
Inches of Mercury
, Millipascal
Warm air aloft is associated with ____ pressure aloft.
High
The pressure gradient force (PGF) makes air move from ______ pressure
High to low
Cold surface air is usually associated with which type of surface (sea-level) pressure system?
High pressure system
A trough on a 500 mb chart is a horizontal height ______
Minimum
Why is station pressure not a good indicator of horizontal pressure variations?
Varies greatly with elevation
(T/F) Winds on upper-level charts tend to be parallel to the height contours
True
Warm surface air is usually associated with which type of surface (sea-level) pressure system?
Low pressure system
Which of the following is NOT a force that has large effects on winds aloft?
Pressure Gradient Force
Coriolis Force
Centripetal Force
Friction
Friction
(T/F) The stronger the pressure gradient, the stronger the wind.
True
You would not experience the Coriolis force if you were:
Outside of earth
In Kenya (located near the equator), a bunch of street vendors will approach you as you walk down
the street telling you that if you cross the equator with them, they'll show you that their bucket spins
one way on the northern side and the other way on the southern side. Although they say it's due to
the Coriolis force, this is actually a full-blown scam. Why?
The Coriolis force is zero at the equator
A bucket is too small a space scale to observe the Coriolis effect, wherever you are
Their demonstration occurs on too short a time scale to observe the Coriolis effect
All of the above
All of the above
A)
An unsaturated air parcel cools or warms at what rate?
Dry adiabatic lapse rate (DALR)
A saturated air parcel cools or warms at which rate?
Moist adiabatic rate (MALR)
If the environmental lapse rate is greater than the dry adiabatic rate, the atmosphere is:
Absolutely unstable
Surface cooling and warm air advection aloft generally do what to the atmosphere?
Make it more stable
An air parcel starts to rise freely when it first becomes warmer than the environment at the:
Level of free convection (LFR)
Cloud bases form at the
Lifting Condensation level
(T/F) Mountain wave clouds are usually a sign of turbulent air
True
(T/F) In order to produce a cloud on the windward (upslope) side of a mountain orographic lift must
work together with convection
False
In the real atmosphere, which stability situation is most associated with thunderstorm development?
Conditionally unstable
Which processors do you stabilize the atmosphere?
A.) heating the surface
B.)cooling the air aloft
C.) Both A and B
D.) none of the above
C.) Both A and B
(T/F) An aneroid barometer (such as an altimeter) contains mercury
False
Which of the following is not often used as a unit of pressure in meteorology?
Millipascal
Hectopascal
Millibar
Inches of Mercury
, Millipascal
Warm air aloft is associated with ____ pressure aloft.
High
The pressure gradient force (PGF) makes air move from ______ pressure
High to low
Cold surface air is usually associated with which type of surface (sea-level) pressure system?
High pressure system
A trough on a 500 mb chart is a horizontal height ______
Minimum
Why is station pressure not a good indicator of horizontal pressure variations?
Varies greatly with elevation
(T/F) Winds on upper-level charts tend to be parallel to the height contours
True
Warm surface air is usually associated with which type of surface (sea-level) pressure system?
Low pressure system
Which of the following is NOT a force that has large effects on winds aloft?
Pressure Gradient Force
Coriolis Force
Centripetal Force
Friction
Friction
(T/F) The stronger the pressure gradient, the stronger the wind.
True
You would not experience the Coriolis force if you were:
Outside of earth
In Kenya (located near the equator), a bunch of street vendors will approach you as you walk down
the street telling you that if you cross the equator with them, they'll show you that their bucket spins
one way on the northern side and the other way on the southern side. Although they say it's due to
the Coriolis force, this is actually a full-blown scam. Why?
The Coriolis force is zero at the equator
A bucket is too small a space scale to observe the Coriolis effect, wherever you are
Their demonstration occurs on too short a time scale to observe the Coriolis effect
All of the above
All of the above
