Forms of condensation: dew, frost, fog, and mist

Question 1HardLevel 89

If fog forms only over a river but not over nearby dry land what is the most appropriate reason?

AAir over the river has more moisture and enough coolingBAir over the river has no water vapourCDry land always forms fogDA river prevents fog formation

Question 2HardLevel 89

If a frost layer first melts in sunlight and then disappears what is the correct process sequence?

ACondensation then erosionBMelting then evaporationCEvaporation then snowfallDDeposition then earthquake

Question 3HardLevel 89

When dense fog forms what is the practical result of increased droplet concentration in air?

ASoil fertility will immediately increaseBOcean salinity will decreaseCVisibility will decrease sharplyDAir pressure will become zero

Question 4HardLevel 90

Which local condition is most decisive for dew formation?

ASurface temperature falls to dew point but remains above freezingBSurface temperature always remains high in daytimeCAll condensation nuclei disappear from airDAir becomes completely free from water vapour

Question 5HardLevel 90

Which temperature relation is more important in frost formation than in dew formation?

ASurface temperature being below freezing pointBSurface temperature always being (50^\circ C)CAir temperature being higher than sea waterDSolar temperature becoming zero

Question 6HardLevel 90

On what basis is the main exam-worthy difference between fog and mist made?

AIntensity of reduction in visibilityBAmount of sea saltCHardness of rocksDSpeed of seismic waves

Question 7HardLevel 90

Why is dew more likely on a clear calm night?

ARadiational cooling is stronger and air mixing is weakerBSolar radiation is highest at nightCStrong wind always heats the surfaceDClouds increase surface heat loss

Question 8HardLevel 90

If moist air reaches cold grass and the grass temperature falls to the dew point above (0^\circ C), what will form?

ADewBFrostCHailstormDDry dust

Question 9HardLevel 90

If surface temperature is below freezing and water vapour changes directly into ice crystals, this is an example of what?

ADew formationBFrost formationCOcean tideDEvapotranspiration

Question 10HardLevel 90

Why can radiation fog persist longer in valleys?

ACold dense air collects below and can create inversionBValleys never contain water vapourCGravity does not work in valleysDThe Sun always rises at midnight in valleys

Question 11HardLevel 90

In which condition is advection fog most likely to form?

AWarm moist air moves over a cold surfaceBDry hot air remains over a desertCCold dry air is compressed over hot rockDWater vapour completely disappears from air

Question 12HardLevel 90

When can steam fog or evaporation fog form?

ACold air moves over warm water and gains moistureBWarm dry air stays over dry sandCBoth surface and air are completely dryDAir has no condensation nuclei

Question 13HardLevel 90

What is the fundamental difference between dew and fog?

ADew deposits on surfaces while fog remains as suspended droplets in airBDew is always ice and fog is always dustCDew forms only over oceans and fog only in desertsDNeither involves condensation

Question 14HardLevel 90

In which situation may the surface remain dry instead of forming dew?

ASurface temperature remains well above dew pointBAir is very close to saturationCNight is calm and clearDGrass surface cools rapidly

Question 15HardLevel 90

How can abundance of condensation nuclei affect urban fog?

AIt provides more surfaces for tiny droplets to formBIt immediately removes all water vapourCIt makes air completely dryDIt always changes fog into frost

Question 16HardLevel 90

Why can temperature inversion make fog dense?

AIt traps cold moist air near the surfaceBIt sends all droplets to the SunCIt completely removes moisture from airDIt instantly heats the surface strongly

Question 17HardLevel 90

If visibility becomes very low and nearly less than (1) kilometre, it is generally associated with what?

AFogBDewCClear skyDDry hot wind

Question 18HardLevel 90

Why is mist called a lighter form than fog?

ABecause it reduces visibility lessBBecause it never contains water vapourCBecause it is only a thick sheet of iceDBecause it forms far below the ground

Question 19HardLevel 90

Why can dew disappear quickly after sunrise?

ASurface warming increases evaporation of dropletsBThe Sun turns vapour into stoneCAir pressure always becomes zeroDDew changes into sea waves

Question 20HardLevel 90

Why can frost be more harmful than dew in agriculture?

ABecause ice crystals can damage tender plant cellsBBecause frost always gives more water to plantsCBecause dew has no moistureDBecause frost forms only in summer

Forms of condensation: dew, frost, fog, and mist

Quiz this set

If fog forms only over a river but not over nearby dry land what is the most appropriate reason?

If a frost layer first melts in sunlight and then disappears what is the correct process sequence?

When dense fog forms what is the practical result of increased droplet concentration in air?

Which local condition is most decisive for dew formation?

Which temperature relation is more important in frost formation than in dew formation?

On what basis is the main exam-worthy difference between fog and mist made?

Why is dew more likely on a clear calm night?

If moist air reaches cold grass and the grass temperature falls to the dew point above (0^\circ C), what will form?

If surface temperature is below freezing and water vapour changes directly into ice crystals, this is an example of what?

Why can radiation fog persist longer in valleys?

In which condition is advection fog most likely to form?

When can steam fog or evaporation fog form?

What is the fundamental difference between dew and fog?

In which situation may the surface remain dry instead of forming dew?

How can abundance of condensation nuclei affect urban fog?

Why can temperature inversion make fog dense?

If visibility becomes very low and nearly less than (1) kilometre, it is generally associated with what?

Why is mist called a lighter form than fog?

Why can dew disappear quickly after sunrise?

Why can frost be more harmful than dew in agriculture?

Quiz result

Forms of condensation: dew, frost, fog, and mist

Quiz this set

If fog forms only over a river but not over nearby dry land what is the most appropriate reason?

If a frost layer first melts in sunlight and then disappears what is the correct process sequence?

When dense fog forms what is the practical result of increased droplet concentration in air?

Which local condition is most decisive for dew formation?

Which temperature relation is more important in frost formation than in dew formation?

On what basis is the main exam-worthy difference between fog and mist made?

Why is dew more likely on a clear calm night?

If moist air reaches cold grass and the grass temperature falls to the dew point above (0^\circ C), what will form?

If surface temperature is below freezing and water vapour changes directly into ice crystals, this is an example of what?

Why can radiation fog persist longer in valleys?

In which condition is advection fog most likely to form?

When can steam fog or evaporation fog form?

What is the fundamental difference between dew and fog?

In which situation may the surface remain dry instead of forming dew?

How can abundance of condensation nuclei affect urban fog?

Why can temperature inversion make fog dense?

If visibility becomes very low and nearly less than (1) kilometre, it is generally associated with what?

Why is mist called a lighter form than fog?

Why can dew disappear quickly after sunrise?

Why can frost be more harmful than dew in agriculture?

Quiz result

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