Test
02. Lesson Temperature and humidity
Preguntas del test (20)
11. The measurement of surface temperature is made:
- Aa) At ground level.
- Bb) At approximately 10 metres above ground level.
- Cc) At approximately 4 feet above ground level.
- Dd) At approximately 4 metres above ground level.
22. Cloud cover will reduce diurnal variation of temperature because:
- Aa) Incoming solar radiation is reflected back to space and outgoing terrestrial radiation is reflected back to earth.
- Bb) Incoming solar radiation is re-radiated back to space and atmospheric heating by convection will stop at the level of the cloud layer.
- Cc) The cloud stops the sun rays getting through to the earth and also reduces outgoing conduction.
- Dd) Incoming solar radiation is reflected back to space and outgoing terrestrial radiation is re-radiated from the cloud layer back to the surface.
33. Most accurate temperatures above the ground level are obtained by:
- Aa) Tephigram.
- Bb) Aircraft reports.
- Cc) Temperature probes.
- Dd) Radio sonde.
44. The diurnal variation of temperature is:
- Aa) Greater over sea than overland.
- Bb) Less over desert areas than over temperate grassland.
- Cc) Reduced anywhere by the presence of cloud.
- Dd) Increased anywhere as wind speed increases.
55. Over continents and oceans, the relative temperature conditions are:
- Aa) Warmer in winter over land, colder in summer over sea.
- Bb) Colder in winter over land, warmer in winter over sea.
- Cc) Cold in winter over land and sea.
- Dd) Warmer in summer over land and sea.
66. The process of change of state from a liquid to a gas is:
- Aa) Condensation in which latent heat is released.
- Bb) Evaporation in which latent heat is released.
- Cc) Condensation in which latent heat is absorbed.
- Dd) Evaporation in which latent heat is absorbed.
77. Air is classified as dry or saturated according to its relative humidity. If the relative humidity were 95% the air would be classified as:
- Aa) Conditionally saturated.
- Bb) Partially saturated.
- Cc) Saturated.
- Dd) Dry.
88. On a wet bulb thermometer in an unsaturated atmosphere there will be a reduction of temperature below that of the dry bulb thermometer because:
- Aa) Heat is absorbed during the process of condensation.
- Bb) Heat is released during the process of condensation.
- Cc) Heat is absorbed by the thermometer during the process of evaporation.
- Dd) Heat is released from the thermometer during the process of
evaporation.
99. Relative humidity is:
- Aa) Air temperature over wet bulb temperature * 100.
- Bb) Air temperature over dew point temperature * 100.
- Cc) The actual amount of water vapour in a sample of air over the maximum amount of water vapour that the sample can contain *100.
- Dd) 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.
1010. Absolute humidity is:
- Aa) The number of water droplets in a given quantity of air.
- Bb) The amount of water vapour that a quantity of air holds.
- Cc) The maximum amount of water vapour that a given quantity of air can hold.
- Dd) The maximum number of water droplets that a given quantity of air can hold.
1111. Wet bulb temperature would normally be lower than the dry bulb temperature because:
- Aa) condensation causes a release of latent heat.
- Bb) evaporation causes cooling.
- Cc) latent heat is absorbed by the bulb thermometer.
- Dd) of condensation on the muslin wick of the bulb.
1212. The wet bulb temperature:
- Aa) Is measured using a hydrometer.
- Bb) Is the minimum temperature to which a thermometer bulb can be cooled by the evaporation of water.
- Cc) Measures the dew point of air.
- Dd) Is the minimum temperature reached by the surface of the earth as
measured by a thermometer placed 1,2 metres above the ground.
1313. Which one of the following statements relating to atmospheric humidity is correct:
- Aa) If the air temperature falls then the absolute humidity must increase.
- Bb) The absolute humidity is the mass of water vapour contained in unit volume of air.
- Cc) The diurnal variation of dewpoint temperature is greatest when skies are clear at night.
- Dd) The dewpoint temperature is the temperature indicated by the wet bulb thermometer.
1414. When condensation takes place, the higher temperature, the _____ the amount of latent heat______:
- Aa) Lesser released
- Bb) greater absorbed
- Cc) greater released
- Dd) lesser absorbed
1515. When water vapour changes to ice:
- Aa) Latent heat is absorbed.
- Bb) Specific heat is released.
- Cc) Latent heat is released.
- Dd) Specific heat is absorbed.
1616. Throughout the 24hrs of a day the Relative Humidity can be expected to:
- Aa) Increase during the day and decrease at night.
- Bb) Stay reasonably constant throughout the 24 hours.
- Cc) Reduce during the day and increase at night.
- Dd) Only change with a change of airmass.
1717. During a night with a clear sky, surface temperature will_____RH will_____ and dewpoint will_____:
- Aa) Fall, rise rise.
- Bb) Rise, rise, fall.
- Cc) Fall, rise, remain the same.
- Dd) Fall, fall, remain the same.
1818. A change of state directly from a solid to a vapour or vice versa is:
- Aa) Insolation.
- Bb) Condensation.
- Cc) Evaporation.
- Dd) Sublimation.
1919. The instrument used for measuring the humidity of air is a:
- Aa) Hydrometer.
- Bb) Hygrometer.
- Cc) Wet bulb thermometer.
- Dd) Hygroscope.
2020. The process of change of state from a gas to a liquid is:
- Aa) Evaporation in which latent heat is absorbed.
- Bb) Evaporation in which latent heat is released.
- Cc) Condensation in which latent heat is absorbed.
- Dd) Condensation in which latent heat is released.
Información
- Descripción
- Tema 1 Meteo Test sobre 02. Lesson Temperature and humidity , creado por Jose Antonio Vazquez el 12/12/2017.
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- Jose Antonio Vazquez
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- Español
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