11743436
Descripción
Test por Jose Antonio Vazquez, actualizado hace más de 1 año
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Creado por Jose Antonio Vazquez
hace alrededor de 7 años
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Pregunta 1
Pregunta
1. The measurement of surface temperature is made:
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a) At ground level.
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b) At approximately 10 metres above ground level.
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c) At approximately 4 feet above ground level.
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d) At approximately 4 metres above ground level.
Pregunta 2
Pregunta
2. Cloud cover will reduce diurnal variation of temperature because:
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a) Incoming solar radiation is reflected back to space and outgoing terrestrial radiation is reflected back to earth.
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b) Incoming solar radiation is re-radiated back to space and atmospheric heating by convection will stop at the level of the cloud layer.
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c) The cloud stops the sun rays getting through to the earth and also reduces outgoing conduction.
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d) Incoming solar radiation is reflected back to space and outgoing terrestrial radiation is re-radiated from the cloud layer back to the surface.
Pregunta 3
Pregunta
3. Most accurate temperatures above the ground level are obtained by:
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a) Tephigram.
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b) Aircraft reports.
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c) Temperature probes.
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d) Radio sonde.
Pregunta 4
Pregunta
4. The diurnal variation of temperature is:
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a) Greater over sea than overland.
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b) Less over desert areas than over temperate grassland.
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c) Reduced anywhere by the presence of cloud.
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d) Increased anywhere as wind speed increases.
Pregunta 5
Pregunta
5. Over continents and oceans, the relative temperature conditions are:
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a) Warmer in winter over land, colder in summer over sea.
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b) Colder in winter over land, warmer in winter over sea.
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c) Cold in winter over land and sea.
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d) Warmer in summer over land and sea.
Pregunta 6
Pregunta
6. The process of change of state from a liquid to a gas is:
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a) Condensation in which latent heat is released.
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b) Evaporation in which latent heat is released.
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c) Condensation in which latent heat is absorbed.
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d) Evaporation in which latent heat is absorbed.
Pregunta 7
Pregunta
7. Air is classified as dry or saturated according to its relative humidity. If the relative humidity were 95% the air would be classified as:
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a) Conditionally saturated.
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b) Partially saturated.
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c) Saturated.
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d) Dry.
Pregunta 8
Pregunta
8. On a wet bulb thermometer in an unsaturated atmosphere there will be a reduction of temperature below that of the dry bulb thermometer because:
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a) Heat is absorbed during the process of condensation.
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b) Heat is released during the process of condensation.
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c) Heat is absorbed by the thermometer during the process of evaporation.
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d) Heat is released from the thermometer during the process of evaporation.
Pregunta 9
Pregunta
9. Relative humidity is:
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a) Air temperature over wet bulb temperature * 100.
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b) Air temperature over dew point temperature * 100.
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c) The actual amount of water vapour in a sample of air over the maximum amount of water vapour that the sample can contain *100.
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d) The maximum amount of water vapour that a sample of air can contain over the actual amount of water vapour the sample does contain * 100.
Pregunta 10
Pregunta
10. Absolute humidity is:
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a) The number of water droplets in a given quantity of air.
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b) The amount of water vapour that a quantity of air holds.
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c) The maximum amount of water vapour that a given quantity of air can hold.
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d) The maximum number of water droplets that a given quantity of air can hold.
Pregunta 11
Pregunta
11. Wet bulb temperature would normally be lower than the dry bulb temperature because:
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a) condensation causes a release of latent heat.
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b) evaporation causes cooling.
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c) latent heat is absorbed by the bulb thermometer.
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d) of condensation on the muslin wick of the bulb.
Pregunta 12
Pregunta
12. The wet bulb temperature:
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a) Is measured using a hydrometer.
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b) Is the minimum temperature to which a thermometer bulb can be cooled by the evaporation of water.
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c) Measures the dew point of air.
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d) Is the minimum temperature reached by the surface of the earth as measured by a thermometer placed 1,2 metres above the ground.
Pregunta 13
Pregunta
13. Which one of the following statements relating to atmospheric humidity is correct:
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a) If the air temperature falls then the absolute humidity must increase.
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b) The absolute humidity is the mass of water vapour contained in unit volume of air.
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c) The diurnal variation of dewpoint temperature is greatest when skies are clear at night.
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d) The dewpoint temperature is the temperature indicated by the wet bulb thermometer.
Pregunta 14
Pregunta
14. When condensation takes place, the higher temperature, the _____ the amount of latent heat______:
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a) Lesser released
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b) greater absorbed
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c) greater released
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d) lesser absorbed
Pregunta 15
Pregunta
15. When water vapour changes to ice:
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a) Latent heat is absorbed.
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b) Specific heat is released.
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c) Latent heat is released.
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d) Specific heat is absorbed.
Pregunta 16
Pregunta
16. Throughout the 24hrs of a day the Relative Humidity can be expected to:
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a) Increase during the day and decrease at night.
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b) Stay reasonably constant throughout the 24 hours.
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c) Reduce during the day and increase at night.
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d) Only change with a change of airmass.
Pregunta 17
Pregunta
17. During a night with a clear sky, surface temperature will_____RH will_____ and dewpoint will_____:
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a) Fall, rise rise.
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b) Rise, rise, fall.
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c) Fall, rise, remain the same.
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d) Fall, fall, remain the same.
Pregunta 18
Pregunta
18. A change of state directly from a solid to a vapour or vice versa is:
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a) Insolation.
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b) Condensation.
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c) Evaporation.
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d) Sublimation.
Pregunta 19
Pregunta
19. The instrument used for measuring the humidity of air is a:
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a) Hydrometer.
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b) Hygrometer.
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c) Wet bulb thermometer.
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d) Hygroscope.
Pregunta 20
Pregunta
20. The process of change of state from a gas to a liquid is:
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a) Evaporation in which latent heat is absorbed.
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b) Evaporation in which latent heat is released.
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c) Condensation in which latent heat is absorbed.
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d) Condensation in which latent heat is released.
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