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02. Lesson Temperature and humidity

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Tema 1 Meteo Quiz on 02. Lesson Temperature and humidity , created by Jose Antonio Vazquez on 12/12/2017.
Jose Antonio Vazquez
Quiz by Jose Antonio Vazquez, updated more than 1 year ago
Jose Antonio Vazquez
Created by Jose Antonio Vazquez over 6 years ago
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Question 1

Question
1. The measurement of surface temperature is made:
Answer
  • a) At ground level.
  • b) At approximately 10 metres above ground level.
  • c) At approximately 4 feet above ground level.
  • d) At approximately 4 metres above ground level.

Question 2

Question
2. Cloud cover will reduce diurnal variation of temperature because:
Answer
  • a) Incoming solar radiation is reflected back to space and outgoing terrestrial radiation is reflected back to earth.
  • b) Incoming solar radiation is re-radiated back to space and atmospheric heating by convection will stop at the level of the cloud layer.
  • c) The cloud stops the sun rays getting through to the earth and also reduces outgoing conduction.
  • d) Incoming solar radiation is reflected back to space and outgoing terrestrial radiation is re-radiated from the cloud layer back to the surface.

Question 3

Question
3. Most accurate temperatures above the ground level are obtained by:
Answer
  • a) Tephigram.
  • b) Aircraft reports.
  • c) Temperature probes.
  • d) Radio sonde.

Question 4

Question
4. The diurnal variation of temperature is:
Answer
  • a) Greater over sea than overland.
  • b) Less over desert areas than over temperate grassland.
  • c) Reduced anywhere by the presence of cloud.
  • d) Increased anywhere as wind speed increases.

Question 5

Question
5. Over continents and oceans, the relative temperature conditions are:
Answer
  • a) Warmer in winter over land, colder in summer over sea.
  • b) Colder in winter over land, warmer in winter over sea.
  • c) Cold in winter over land and sea.
  • d) Warmer in summer over land and sea.

Question 6

Question
6. The process of change of state from a liquid to a gas is:
Answer
  • a) Condensation in which latent heat is released.
  • b) Evaporation in which latent heat is released.
  • c) Condensation in which latent heat is absorbed.
  • d) Evaporation in which latent heat is absorbed.

Question 7

Question
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:
Answer
  • a) Conditionally saturated.
  • b) Partially saturated.
  • c) Saturated.
  • d) Dry.

Question 8

Question
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:
Answer
  • a) Heat is absorbed during the process of condensation.
  • b) Heat is released during the process of condensation.
  • c) Heat is absorbed by the thermometer during the process of evaporation.
  • d) Heat is released from the thermometer during the process of evaporation.

Question 9

Question
9. Relative humidity is:
Answer
  • a) Air temperature over wet bulb temperature * 100.
  • b) Air temperature over dew point temperature * 100.
  • 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.
  • 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.

Question 10

Question
10. Absolute humidity is:
Answer
  • a) The number of water droplets in a given quantity of air.
  • b) The amount of water vapour that a quantity of air holds.
  • c) The maximum amount of water vapour that a given quantity of air can hold.
  • d) The maximum number of water droplets that a given quantity of air can hold.

Question 11

Question
11. Wet bulb temperature would normally be lower than the dry bulb temperature because:
Answer
  • a) condensation causes a release of latent heat.
  • b) evaporation causes cooling.
  • c) latent heat is absorbed by the bulb thermometer.
  • d) of condensation on the muslin wick of the bulb.

Question 12

Question
12. The wet bulb temperature:
Answer
  • a) Is measured using a hydrometer.
  • b) Is the minimum temperature to which a thermometer bulb can be cooled by the evaporation of water.
  • c) Measures the dew point of air.
  • d) Is the minimum temperature reached by the surface of the earth as measured by a thermometer placed 1,2 metres above the ground.

Question 13

Question
13. Which one of the following statements relating to atmospheric humidity is correct:
Answer
  • a) If the air temperature falls then the absolute humidity must increase.
  • b) The absolute humidity is the mass of water vapour contained in unit volume of air.
  • c) The diurnal variation of dewpoint temperature is greatest when skies are clear at night.
  • d) The dewpoint temperature is the temperature indicated by the wet bulb thermometer.

Question 14

Question
14. When condensation takes place, the higher temperature, the _____ the amount of latent heat______:
Answer
  • a) Lesser released
  • b) greater absorbed
  • c) greater released
  • d) lesser absorbed

Question 15

Question
15. When water vapour changes to ice:
Answer
  • a) Latent heat is absorbed.
  • b) Specific heat is released.
  • c) Latent heat is released.
  • d) Specific heat is absorbed.

Question 16

Question
16. Throughout the 24hrs of a day the Relative Humidity can be expected to:
Answer
  • a) Increase during the day and decrease at night.
  • b) Stay reasonably constant throughout the 24 hours.
  • c) Reduce during the day and increase at night.
  • d) Only change with a change of airmass.

Question 17

Question
17. During a night with a clear sky, surface temperature will_____RH will_____ and dewpoint will_____:
Answer
  • a) Fall, rise rise.
  • b) Rise, rise, fall.
  • c) Fall, rise, remain the same.
  • d) Fall, fall, remain the same.

Question 18

Question
18. A change of state directly from a solid to a vapour or vice versa is:
Answer
  • a) Insolation.
  • b) Condensation.
  • c) Evaporation.
  • d) Sublimation.

Question 19

Question
19. The instrument used for measuring the humidity of air is a:
Answer
  • a) Hydrometer.
  • b) Hygrometer.
  • c) Wet bulb thermometer.
  • d) Hygroscope.

Question 20

Question
20. The process of change of state from a gas to a liquid is:
Answer
  • a) Evaporation in which latent heat is absorbed.
  • b) Evaporation in which latent heat is released.
  • c) Condensation in which latent heat is absorbed.
  • d) Condensation in which latent heat is released.
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