Question 1
Question
Which factors contribute to sea level rise due to climate change?
Answer
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Increased numbers of floods
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Rapid melting of arctic ice
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Thermal expansion and melting of land-bound ice
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Slow sinking of the continents
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Enhanced precipitation
Question 2
Question
The green house gas effect can be explained by
Answer
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Wavelength dependence of absorption of radiation by GHG
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Ozone depletion in the stratosphere
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The elliptic path of the earth around the sun
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Enhanced reflection of long wave radiation by GHG
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Enhanced concentration of dust and carbon monoxide in the atmosphere
Question 3
Question
Because saturation vapour pressure depends on the surface on which it occurs
Answer
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Lifting of air masses leads to condensation
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Clouds grow rapidly when ice particles are introduced
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Small drops grow at the cost of large drops
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Mixing of warmer and colder air masses can lead to mixing fog
Question 4
Question
Airborne radionuclide concentrations are especially relevant for
Question 5
Question
Occult deposition is
Answer
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An as yet undiscovered deposition
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Deposition that is not yet fully understood
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Deposition by fog, dew, etc.
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Deposition pollutants attached to aerosols
Question 6
Question
For the development of the ozone hole in the Antarctic the following are decisive:
Answer
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High CFC concentrations and lack of solar radiation
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High CFC concentrations and temperatures below zero
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High CFC concentration and climate change
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Temperatures below -80°C and little air mass exchange
Question 7
Question
the double strategy in Austrian air pollution policy consists of
Answer
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Limiting synergistic pollutants simultaneously
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Requiring the pollutants and the affected to contribute to emission reductions
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Increasing stack heights and emission standards
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Limiting emission according to state-of-the-art-technology and to stay within air quality
Question 8
Question
An end-of-pipe measure is e.g.:
Answer
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Using more efficient technologies
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Implementing an emission trading scheme
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Filter flue gases
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Technological improvements in the process
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Desulfurization of oil
Question 9
Question
Present day GHG emissions of the average Austrian are around
Answer
-
50 t per year
-
1 t per year
-
100 t per year
-
Not quantifiable
-
10 t per year
Question 10
Question
Climate change does not involve
Question 11
Question
Which are not typical effects of mountain valleys or basins?
Answer
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Inducing thermally driven circulations
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Strong dispersion of pollutants
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Development of cold air basins due to drainage flow
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Inversions
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Channelling flow
Question 12
Question
Stratospheric ozone concentration
Answer
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Is falling in midlatitudes in winter, constant in summer
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Is falling worldwide
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Is falling in equatorial regions in winter
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Is falling in midlatitudes in winter and strongly falling over Antarctica
Question 13
Question
In the climate debate tipping points are understood to describe
Answer
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Points ate which the planet becomes uninhabitable
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Points beyond which positive feedback mechanisms can no longer be contained by humans
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Points of time in policy debate when decisive steps are taken
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Geographical locations where decisive climate process
Question 14
Question
Under clear sky conditions in summer ozone levels are especially high in Vienna
Answer
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On weekdays
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During traffic peaks
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On Sundays and holidays
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On Mondays
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On Saturdays
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In the early morning
Question 15
Question
What is NOT true of radioactive decay
Answer
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Is the only way to deplete radio nuclei
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Disappears after 5 half-life times
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Depends only on the radio nuclide
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Is independent of external influences
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Can vary over orders of magnitude
Question 16
Question
Which of the following issues is not a mesoscale pollution problem
Question 17
Question
The IPAT equation or Kaya Identity can be used to explain
Answer
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The impact of population, air pollution and technology on environmental degradation
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The impact of green house gas emission on climate
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The extent to which ecological boundaries have been crossed
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The impact of world population, affluence and technology on green house gas emission
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The impact of lifestyles on environmental quality and tipping points
Question 18
Question
What was the original definition of smog
Answer
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A combination of smoke and fog
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High concentration of photo chemicals
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Cigarette smoke
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High ozone concentrations
Question 19
Question
Dispersion models typically consists of 3 modules:
Answer
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Transport Module, Immission Module, Impact Module
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Meteorology Module, Chemistry Module, Deposition Module
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Emission Module, Transmission Module, Immission Module
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Meteorology Module, Chemistry Module, Transport Module
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Meteorology Module, Transport Module, Deposition Module
Question 20
Question
Trajectories are an important part of which kind of dispersion models?
Answer
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Gaussian models
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Diffusion models
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Langrangian models
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Richardson models
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Eulerian models
Question 21
Question
Near the earths surface temperature increases with height
Answer
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When wind speed increase with height
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When wind speed is low and the radiation balances at the surface is negative
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Because the distance from sun decrease
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When atmospheric radiation exceeds terrestrial radiation
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When warm air rises from heated surfaces
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When an inversion break up
Question 22
Question
Chronic damage caused by air pollution can be prevented
Answer
-
Standards expressed in high percentiles
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Limiting maximum concentration
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Short term standards, e.g.: hourly means
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Long term standards, e.g.: yearly means
Question 23
Question
In an idealised valley the following local circulations are to be expected in fair weather on the early afternoon
Question 24
Question
In order for a cloud to rain, cloud droplets must grow
Answer
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through coagulation and coalescence with other droplets
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through freezing and melting
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and rech a size 100 times that a small cloud droplet
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through transpiration and evaporation
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through compression and density increase
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through condensation and diffusion
Question 25
Question
Which of the following radiative processes leads to energy conversion?
Answer
-
Reflexion
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Absorption
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Refraction
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Diffusion
Question 26
Question
Concentrations caused at a specific point by a continuous point source vary strongly
Question 27
Answer
-
is the bottom layer of the atmosphere in which temperature decreases with height
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is the lower part of the planetary boundary layer
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is the lower part of the stratosphere and characterised by temperature increases with height
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consists of the planetary boundary layer and the turbulent surface layer
Question 28
Question
Boundaries of the global ecological system seem to have been exceeded regarding
Answer
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climate change, nitrogen cycle and phosphorus cycle
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nitrogen cycle, phosphorus cycle and biodiversity loss
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ocean acidification, nitrogen cycle and biodiversity loss
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climate change, nitrogen cycle and biodiversity loss
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climate change, ocean acidification and biodiversity loss
Question 29
Question
The following is NOT correct regarding albedo
Answer
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Average over the whole globe, albedo is about 5%
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Albedo is higher for snow than for bitumen
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Albedo is reflectivity averages over all wave lengths
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Albedo is the ration of reflected to incoming radiation
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Albedo increases with the temperature of the reflecting body
Question 30
Question
The atmosphere is characterised by
Answer
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about 80% nitrogen, 20% oxygen and 1% Argon content
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about 0,03 CO2 and 0,05 water vapour content
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about 80% oxygen and 20% hydrogen content near the surface
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rapid increase of CO2 and decreases of oxygen concentration
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good mixing of gases up to 120km height
Question 31
Question
Which of the following does not heat up faster than global average
Answer
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Continents
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Arctic
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Alpine region
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Oceans
Question 32
Question
In what latitudes do the highest stratospheric ozone concentration occur?
Question 33
Question
The declared aim of the policy of high stacks was to
Answer
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Enhanced the chimney effect and create higher effective stack heights
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Make use of higher wind speed
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Reduce maximum immissions on the ground
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Delay deposition
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Distribute pollutants over larger areas
Question 34
Question
Global temperatures increases over the last 150 years is about
Question 35
Question
What process is not part of dispersion of pollutants in air?
Answer
-
Interception
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Diffusion
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Decay
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Deposition
-
Sedimentation
Question 36
Question
Clinical studies to determine concentration limits for humans help to
Answer
-
Replace experiments using animals
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Study exposures under normal conditions
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Understand systematic dose-effect relationships
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Study the effect of high exposures
Question 37
Question
What is characteristic of an Eulerian model?
Answer
-
The limited amount of input data and numerical capacity needed
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A coordinate system that is fixed relative to the earth surface
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The good representation of point sources
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A grid with increasingly smaller dimensions
Question 38
Question
What is the dual role of CFCs in the atmosphere?
Answer
-
Enhanced chemical reactions and produce stratospheric ozone
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Enhanced chemical reactions and destroy tropospheric ozone
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Contribute to global warming as GHG and deplete ozone
-
Destroy ozone and contribute to Global Dimming
Question 39
Question
Inversions can cause high immission concentrations near the ground
Answer
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When pollutants are emitted below the inversion
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Because heating is especially intense in these periods
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When pollutants are emitted into the inversion through high stacks
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Because pollutants are pressed downward
Question 40
Question
Sulfates can cover large distances in the atmosphere because
Answer
-
They are released in great heights
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They are not easily washed-out
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Their lifetime in the atmosphere is long
-
They are especially light compared to their size
Question 41
Question
What data are not relevant for emission inventories?
Question 42
Question
What human impact does not (yet) exceed the resilience boundaries of the global ecosystems?
Question 43
Question
Gaussian models for continuous point sources assume that
Answer
-
Emission occur at least 10 m above ground
-
life time of pollutants is limited
-
Wind speed exceeds 1 m/s
-
Pollutant concentration is uniform within the plume
Question 44
Question
Stratospheric ozone concentration
Answer
-
Is falling in midlatitudes in winter, constant in summer
-
Is falling worldwide
-
Is falling in midlatitudes and strongly over Antarctica
-
Is falling in equatorial regions in winter
Question 45
Question
What part of the solar spectrum is primarily responsible for the cancer in human skin?
Answer
-
UVA
-
UVC
-
Roentgen waves
-
UVB
-
Infra-red
Question 46
Question
Protections regarding climate in the future do not rely on:
Answer
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Assumptions on GHG emissions
-
An understanding of radiation
-
Assumptions on the development of the world population
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Mathematical models to simulate physical processes in the atmosphere
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Statistical extrapolations of the climate change of the past
Question 47
Question
Air flow is influences near buildings
Answer
-
But the induced turbulence is irrelevant for dispersion
-
Up to about 150m behind the building
-
The stronger, the smaller the building is
-
In the vertical within about 2,5 times the height of the building
Question 48
Question
Which is no Green House Gas (GHG
Answer
-
Carbon monoxide
-
Carbon dioxide
-
Water vapour
-
Methane
-
Ozone
Question 49
Question
What feedback mechanism is reinforcing (=positive)?
Answer
-
Increase in CO2, increased biomass, increased evaporation, cooling
-
Temperature decreases, more glaciers, higher Albedo
-
Temperature increase, increased evaporation, increased cloud cover
-
Temperature increase, forest fires, increased Albedo
Question 50
Question
Deposition reaches generally its highest values
Answer
-
Chemical transformation
-
Occult deposition
-
Sedimentation
-
Wet deposition
Question 51
Question
Emission reductions necessary to meet the 2°C goal are consistent with
Answer
-
80% reduction in industrialised and unlimited emissions in other nations
-
50% reduction of GHG emissions in industrialised nations
-
Full use of conventional and unconventional reserves
-
About 1t of CO2 per person and year till 2050 in industrialised nations
-
GHG emissions about three times the amount already emitted
Question 52
Question
Which is a secondary pollutant?
Answer
-
Aerosols
-
Sulfur dioxide
-
Nitrogen oxide
-
Ozone
Question 53
Question
Expected temperature increases in Austria in the next 20-50 years is about
Question 54
Question
Which is not a component of the radiation balance at the earth's surface
Answer
-
diffuse or sky radiation
-
atmospheric radiation
-
celestrial radiation
-
terrestrial radiation
-
direct solar radiation
Question 55
Question
The effect source height
Answer
-
is defined as the sum of stack height and plume rise
-
depends on the emitted pollutants
-
is equal to stack height for hot effluents
-
is near 40 km for stratospheric ozone
-
increases with air temperature
Question 56
Question
Climate change is scientifically proven by...
increase of global mean temperature
Question 57
Question
What is the significance of oceans in the global carbon cycle?
A sink, but may become a source
Question 58
Question
What is not part of geo-engineerying?
Substitution of fossil energy sources
Question 59
Question
Which of the following pollutants are GHGs? All?
Ozone, carbon dioxide, methane, water vapour
Question 60
Question
Radiation balances is clearly negative...
night time, strong wind, fog
Question 61
Question
Which of the following radiative processes leads to energy conversion?
Answer
-
Reflexion
-
Diffusion
-
Refraction
-
Absorption