Atmosphere & Weather Elements
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Question No. 1
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Which layer of the atmosphere contains the ozone layer that absorbs most of the Sun's ultraviolet radiation?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Question No. 2
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The process by which heat is transferred in the atmosphere through the vertical movement of air masses is called:
A.
Conduction
B.
Radiation
C.
Convection
D.
Advection
Question No. 3
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What is the most abundant gas in the Earth's atmosphere?
A.
Oxygen
B.
Argon
C.
Nitrogen
D.
Carbon Dioxide
Question No. 4
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An instrument used for measuring atmospheric pressure is called a:
A.
Anemometer
B.
Hygrometer
C.
Barometer
D.
Thermometer
Question No. 5
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Which type of cloud is typically thin, wispy, and found at high altitudes, often indicating fair weather?
A.
Cumulus
B.
Stratus
C.
Cirrus
D.
Nimbus
Question No. 6
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The layer of the atmosphere where all weather phenomena occur is the:
A.
Stratosphere
B.
Mesosphere
C.
Troposphere
D.
Thermosphere
Question No. 7
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What is the primary factor responsible for the movement of air (wind) in the atmosphere?
A.
Ocean currents
B.
Coriolis effect
C.
Differences in atmospheric pressure
D.
Gravity
Question No. 8
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The term 'relative humidity' refers to:
A.
The actual amount of water vapor in the air.
B.
The temperature at which air becomes saturated.
C.
The ratio of the amount of water vapor in the air to the maximum amount it can hold at a given temperature.
D.
The amount of moisture present in the soil.
Question No. 9
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Which of the following greenhouse gases is primarily produced by agricultural activities like rice cultivation and livestock farming?
A.
Carbon dioxide (CO2)
B.
Methane (CH4)
C.
Nitrous oxide (N2O)
D.
Chlorofluorocarbons (CFCs)
Question No. 10
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The 'dew point' is the temperature at which:
A.
Water freezes.
B.
Air becomes saturated with water vapor and condensation begins.
C.
Evaporation rate is highest.
D.
Relative humidity is 50%.
Question No. 11
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What is the primary source of energy for the Earth's atmosphere?
A.
Geothermal heat
B.
Tidal forces
C.
Solar radiation
D.
Radioactive decay
Question No. 12
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The boundary between the troposphere and the stratosphere is known as the:
A.
Stratopause
B.
Tropopause
C.
Mesopause
D.
Thermopause
Question No. 13
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Which type of precipitation consists of small, transparent, or translucent ice pellets that form when raindrops freeze as they fall through a layer of sub-freezing air near the ground?
A.
Snow
B.
Hail
C.
Sleet
D.
Freezing rain
Question No. 14
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An 'isobar' on a weather map connects points of equal:
A.
Temperature
B.
Pressure
C.
Humidity
D.
Rainfall
Question No. 15
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The general circulation of the atmosphere is largely driven by the differential heating of the Earth's surface between the equator and the poles. This results in global wind patterns like:
A.
Monsoons and sea breezes
B.
Trade winds and westerlies
C.
Cyclones and anticyclones
D.
Land breezes and valley winds
Question No. 16
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What effect does increased altitude generally have on air temperature in the troposphere?
A.
It increases temperature.
B.
It decreases temperature.
C.
It has no significant effect on temperature.
D.
It first decreases, then increases temperature.
Question No. 17
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The term 'albedo' refers to the:
A.
Amount of absorbed solar radiation.
B.
Percentage of solar radiation reflected by a surface.
C.
Heat radiated from the Earth's surface.
D.
Intensity of greenhouse gas emissions.
Question No. 18
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Which type of fog forms when warm, moist air moves horizontally over a cold surface, cooling the air to its dew point?
A.
Radiation fog
B.
Advection fog
C.
Evaporation fog
D.
Upslope fog
Question No. 19
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The Coriolis effect, which deflects moving objects (like winds and ocean currents) to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, is caused by:
A.
Earth's gravitational pull
B.
Differences in air pressure
C.
Earth's rotation
D.
Solar flares
Question No. 20
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What is the primary role of carbon dioxide in the Earth's atmosphere regarding temperature regulation?
A.
It reflects solar radiation back into space.
B.
It absorbs incoming ultraviolet radiation.
C.
It absorbs outgoing longwave (infrared) radiation, contributing to the greenhouse effect.
D.
It facilitates the formation of clouds.
Question No. 21
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An instrument used to measure wind speed is called a/an:
A.
Barometer
B.
Hygrometer
C.
Anemometer
D.
Rain gauge
Question No. 22
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Which of the following describes a 'cold front'?
A.
A boundary where warm air replaces cold air.
B.
A boundary where a cold air mass advances and pushes under a warm air mass.
C.
A stationary boundary between two air masses.
D.
A boundary where an occluded system forms.
Question No. 23
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The phenomenon where temperature increases with altitude in a layer of the atmosphere, rather than decreasing, is known as a:
A.
Temperature lapse
B.
Thermal anomaly
C.
Temperature inversion
D.
Isothermal layer
Question No. 24
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Which atmospheric layer is characterized by extremely low density and is where the aurora borealis and aurora australis primarily occur due to ionization by solar radiation?
A.
Mesosphere
B.
Exosphere
C.
Thermosphere
D.
Stratosphere
Question No. 25
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What term describes the amount of solar radiation received per unit area at a given time?
A.
Albedo
B.
Insolation
C.
Convection
D.
Thermal radiation
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