Formation of Fog Quiz
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What causes evaporation fog to form?

  • Mixing of cold air with warm, moist air
  • Moisture in the air condensing due to rising air
  • Cooling of land overnight by thermal radiation
  • Cold air passing over warmer water or moist land (correct)
  • What are the four main types of fog mentioned in the text?

  • Evaporative fog, thermal fog, convection fog, and updraft fog
  • Mist, haze, smog, and steam
  • Evaporation fog, radiation fog, advection fog, and orographic fog (correct)
  • Stratus fog, cumulus fog, cirrus fog, and nimbostratus fog
  • What is the main cause of radiation fog?

  • Evaporation of water into the air
  • Mixing of cold and warm air masses
  • Cooling of land overnight by thermal radiation (correct)
  • Moisture in the air condensing due to rising air
  • Which type of fog is formed when moist air is forced to rise over a mountain or hill?

    <p>Orographic fog</p> Signup and view all the answers

    What is the key difference between evaporation fog and radiation fog?

    <p>Evaporation fog forms from the evaporation of water into the air, while radiation fog forms from the cooling of land overnight by thermal radiation.</p> Signup and view all the answers

    What is the primary factor that determines whether fog or dew/frost will form in still air conditions?

    <p>The temperature of the surface</p> Signup and view all the answers

    What is the effect of a light wind of around 5 knots on the formation of radiation fog?

    <p>It causes the fog layer to be thicker</p> Signup and view all the answers

    What is the primary cause of advection fog?

    <p>Warm, moist air passing over a colder surface</p> Signup and view all the answers

    Which type of fog is typically the longest lasting?

    <p>Advection fog</p> Signup and view all the answers

    What is the primary cause of orographic fog?

    <p>Winds blowing air up a slope, causing it to cool and condense</p> Signup and view all the answers

    Study Notes

    Causes of Evaporation Fog

    • Evaporation fog forms when cold air passes over warmer water, causing moisture to evaporate and condense into fog.
    • This phenomenon typically occurs in conditions where water temperatures are significantly higher than the air temperature.

    Main Types of Fog

    • Radiation Fog: Develops overnight when the ground loses heat rapidly, cooling the air near the surface.
    • Advection Fog: Forms when warm, moist air moves over cooler surfaces causing condensation.
    • Orographic Fog: Occurs when moist air is lifted over mountains or hills, leading to cooling and condensation.
    • Evaporation Fog: Results from the mixing of cold air with warm, moist air over a body of water.

    Causes of Radiation Fog

    • Radiation fog is primarily caused by the loss of heat from the ground during clear, calm nights, allowing the air near the surface to cool below its dew point.

    Fog Formation Over Mountains

    • Orographic fog is formed when moist air is forced to rise over a mountain or hill, leading to cooling and moisture condensation.

    Differences Between Evaporation Fog and Radiation Fog

    • The key difference lies in their formation conditions: evaporation fog occurs due to moisture from warm water interacting with cooler air, while radiation fog arises from the cooling of ground surface air after sunset.

    Factors Influencing Fog or Dew/Frost Formation

    • The primary factor in determining whether fog or dew/frost forms in still air is the temperature gradient between the air and the surface; if air cools enough to its dew point, fog will form instead of dew or frost.

    Effect of Light Wind on Radiation Fog

    • A light wind of around 5 knots can disrupt the development of radiation fog by mixing the air layers, preventing the surface air from cooling effectively.

    Primary Cause of Advection Fog

    • Advection fog primarily arises when warm, moist air moves horizontally over a cooler surface, leading to condensation as the air temperature drops.

    Longevity of Fog Types

    • Advection fog is typically the longest-lasting fog type due to the continuous supply of warm, moist air coming in over cooler surfaces.

    Primary Cause of Orographic Fog

    • Orographic fog is mainly caused by the forced ascent of moist air as it encounters topographical features like mountains, leading to cooling and subsequent fog formation.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on how fog forms and the different factors affecting visibility. Learn about the various types of fog formation including evaporative fog, radiation fog, advection fog, and orographic fog.

    More Like This

    Use Quizgecko on...
    Browser
    Browser