Page |1
GEOG 1900 Exam #2 (Questions)
(2025/2026) ACTUAL EXAM
COMPREHENSIVE QUESTIONS AND
VERIFIED ACCURATE SOLUTION
(DETAILED & ELABORATED) |GET IT 100%
ACCURATE!! 2025 TEST! !!
What are aerosols?
Ans: An aerosol is a suspension of fine solid particles or liquid
droplets, in air or another gas. Aerosols can be natural or
anthropogenic. Examples of natural aerosols are fog, dust,
forest exudates and geyser steam
Understand the greenhouse effect.
Ans: -A fraction of the infrared energy emitted by the surface
passes through the atmosphere without being absorbed and
reaches space→ absorbed by atmospheric greenhouse gases
(GHGs). The GHGs warm and in turn emit infrared radiation. A
fraction of the radiation emitted by GHGs escapes into space
but some makes it way back to the surface where new
absorption can occur.
-Earth's surface mean temperature is 15°C, Earth's mean
temperature without natural greenhouse effect would be -18°C
All rights reserved © 2025/ 2026 |
, Page |2
-Greenhouse effect is caused by absorption and emission NOT
reflection of longwave radiation
-Greenhouse gases are efficient absorbers of longwave
radiation
Definition of spatial pressure gradient and pressure gradient force*
Ans: Spatial Pressure Gradient
-Change in pressure along a particular spatial dimension
-The force associated with pressure gradients is the MOST
important cause of movement in the atmosphere (winds) and
the ocean (currents, waves)
Pressure Gradient Force
-Force is exerted from the area of high pressure (HP) toward the
area of low pressure (LP)
-The larger the pressure gradient, the stronger the pressure
gradient force, the stronger the wind
How the vertical rate of pressure decrease differs between warm and
cold air columns in the atmosphere and how these differences can lead
to horizontal pressure gradients with elevation.
All rights reserved © 2025/ 2026 |
, Page |3
What does this mean for the general direction of the pressure gradient
force at upper levels of the atmosphere given the mean latitudinal
distribution of temperature.
What does this mean for the average wind direction in this region?
What is the category (geostrophic or surface) of wind generated by this
pressure gradient in elevation? *
Ans: Vertical rate of pressure decreases quicker in colder air
with elevation than warmer air
Creates a gradient in which particle move from warmer to
colder air columns (from higher to lower pressure)
Pressure gradient force will be from lower to higher latitudes
Will cause winds to flow from the equator to the pol es
Geostrophic winds? (wasnt on exam1)
-An air parcel initially at rest will move from high pressure to
low pressure because of the pressure gradient force (PGF).
All rights reserved © 2025/ 2026 |
GEOG 1900 Exam #2 (Questions)
(2025/2026) ACTUAL EXAM
COMPREHENSIVE QUESTIONS AND
VERIFIED ACCURATE SOLUTION
(DETAILED & ELABORATED) |GET IT 100%
ACCURATE!! 2025 TEST! !!
What are aerosols?
Ans: An aerosol is a suspension of fine solid particles or liquid
droplets, in air or another gas. Aerosols can be natural or
anthropogenic. Examples of natural aerosols are fog, dust,
forest exudates and geyser steam
Understand the greenhouse effect.
Ans: -A fraction of the infrared energy emitted by the surface
passes through the atmosphere without being absorbed and
reaches space→ absorbed by atmospheric greenhouse gases
(GHGs). The GHGs warm and in turn emit infrared radiation. A
fraction of the radiation emitted by GHGs escapes into space
but some makes it way back to the surface where new
absorption can occur.
-Earth's surface mean temperature is 15°C, Earth's mean
temperature without natural greenhouse effect would be -18°C
All rights reserved © 2025/ 2026 |
, Page |2
-Greenhouse effect is caused by absorption and emission NOT
reflection of longwave radiation
-Greenhouse gases are efficient absorbers of longwave
radiation
Definition of spatial pressure gradient and pressure gradient force*
Ans: Spatial Pressure Gradient
-Change in pressure along a particular spatial dimension
-The force associated with pressure gradients is the MOST
important cause of movement in the atmosphere (winds) and
the ocean (currents, waves)
Pressure Gradient Force
-Force is exerted from the area of high pressure (HP) toward the
area of low pressure (LP)
-The larger the pressure gradient, the stronger the pressure
gradient force, the stronger the wind
How the vertical rate of pressure decrease differs between warm and
cold air columns in the atmosphere and how these differences can lead
to horizontal pressure gradients with elevation.
All rights reserved © 2025/ 2026 |
, Page |3
What does this mean for the general direction of the pressure gradient
force at upper levels of the atmosphere given the mean latitudinal
distribution of temperature.
What does this mean for the average wind direction in this region?
What is the category (geostrophic or surface) of wind generated by this
pressure gradient in elevation? *
Ans: Vertical rate of pressure decreases quicker in colder air
with elevation than warmer air
Creates a gradient in which particle move from warmer to
colder air columns (from higher to lower pressure)
Pressure gradient force will be from lower to higher latitudes
Will cause winds to flow from the equator to the pol es
Geostrophic winds? (wasnt on exam1)
-An air parcel initially at rest will move from high pressure to
low pressure because of the pressure gradient force (PGF).
All rights reserved © 2025/ 2026 |
