Weather and climate

விளையாடிக் கற்றுக்கொள்ளுங்கள்

ஆற்றல் சம்பாதிக்க இந்த கேள்விகளுக்குப் பதிலளியுங்கள், பின்னர் மீன் பிடித்து ஆராயுங்கள். கணக்கு தேவையில்லை.

கல்வியாளர்களுக்கு: Weather and climate (KS3 Geography, Physical Geography)-க்கான தயாரான பாட ஸ்லைடுகள், திருப்புதல் குறிப்புகள் — உங்கள் பாடத்தில் அவற்றைப் பயன்படுத்தவும், அல்லது கற்பவர்கள் நேரலை விளையாட்டாக விளையாடும் ஊடாடும் வகுப்பு செயல்பாடாக தலைப்பை இயக்கவும்.

பாட குறிப்புகள்

Weather vs. Climate

  • Weather is the state of the atmosphere at a specific place and time, described by temperature, humidity, cloud cover, and stability.
  • Climate is the average of atmospheric conditions over a longer period of time.
  • Weather refers to day-to-day conditions, while climate describes long-term patterns.
  • Most weather phenomena occur in the troposphere, the lowest layer of the atmosphere.

Measuring Weather

  • Temperature is measured with a thermometer, usually in degrees Celsius (°C).
  • Precipitation (rain, snow, etc.) is measured with a rain gauge, typically in millimetres (mm).
  • Wind direction is measured with a wind vane, and wind speed with an anemometer.
  • Air pressure is measured with a barometer, often in millibars (mb) or hectopascals (hPa).

Types of Rainfall

  • Relief rainfall occurs when moist air is forced to rise over mountains, cooling and condensing to form clouds and rain on the windward side.
  • Convectional rainfall happens when the ground is heated strongly, causing air to rise rapidly, cool, and form tall cumulonimbus clouds with heavy showers.
  • Frontal rainfall is produced when a warm air mass meets a cold air mass; the warm air rises over the cold air, leading to prolonged rainfall.

Pressure Systems

  • High pressure (anticyclone) brings sinking air, clear skies, and calm conditions.
  • Low pressure (depression) brings rising air, cloud formation, and precipitation.
  • Air moves from high pressure to low pressure, creating wind.
  • The jet stream is a fast-moving band of air in the upper atmosphere that influences weather systems in the mid-latitudes.

Air Masses Affecting the UK

  • Polar maritime air masses come from the north Atlantic, bringing cool, moist air and frequent rain.
  • Tropical maritime air masses come from the south Atlantic, bringing warm, moist air and mild, cloudy weather.
  • Polar continental air masses come from the east, bringing cold, dry air in winter.
  • Tropical continental air masses come from the south, bringing hot, dry air in summer.

Factors Affecting Climate

  • Latitude: The higher the latitude, the lower the sun angle, so temperatures are cooler.
  • Altitude: Higher altitudes are cooler; temperature decreases with height (adiabatic lapse rate).
  • Distance from the sea: Coastal areas have smaller temperature ranges than inland areas because the sea heats and cools more slowly.
  • Prevailing winds: Winds from the sea bring moisture and moderate temperatures; winds from land bring drier conditions.

Reading a Climate Graph

  • A climate graph shows average monthly temperature as a line graph and average monthly precipitation as a bar chart.
  • The temperature scale is usually on the right, and the precipitation scale on the left.
  • The pattern of temperature shows the seasons: highest in summer, lowest in winter.
  • The pattern of precipitation shows wet and dry months.
  • Climate graphs help compare the climate of different places.

ஸ்லைடுகள்

Sign up free to view the lesson slides

Step through every slide for this topic — plus flashcards and revision notes — with a free account.

பயிற்சி கேள்விகள்

இலவச முன்னோட்டம் — 60-இல் 8 கேள்விகள். அனைத்தையும் பார்க்க பதிவு செய்யவும்.
  1. 1.Which term describes the day-to-day state of the atmosphere at a particular place, including its temperature, precipitation and cloud cover?

    Easy
    • AWeather
    • BClimate
    • CRelief
    • DAltitude
  2. 2.In which layer of the atmosphere do almost all familiar weather phenomena, such as wind, cloud and rain, occur?

    Easy
    • ATroposphere
    • BStratosphere
    • CMesosphere
    • DThermosphere
  3. 3.What is the main reason why places at higher altitude are usually cooler than places at lower altitude?

    Medium
    • AThey are farther from the Sun.
    • BMost atmospheric heating comes from contact with the Earth's surface.
    • CThey receive less rainfall.
    • DThey are closer to the jet stream.
  4. 4.Which type of rainfall occurs when warm, moist air is forced to rise over a mountain barrier?

    Medium
    • ARelief rainfall
    • BConvectional rainfall
    • CFrontal rainfall
    • DCyclonic rainfall
  5. 5.Which of the following is a human factor that can affect the climate of a place?

    Medium
    • ALatitude
    • BAltitude
    • CDistance from the sea
    • DUrbanisation
  6. 6.What causes the seasons?

    Medium
    • AThe Earth's distance from the Sun changing during the year
    • BThe tilt of the Earth's axis relative to its orbital plane
    • CChanges in the Sun's energy output
    • DThe movement of the jet stream
  7. 7.Which large-scale atmospheric circulation cell is located between the equator and about 30° latitude?

    Medium
    • AHadley cell
    • BFerrel cell
    • CPolar cell
    • DJet stream
  8. 8.Which air mass affecting the UK brings cold, dry air from the north?

    Medium
    • APolar maritime
    • BTropical continental
    • CArctic maritime
    • DTropical maritime

Unlock all 60 questions, flashcards & more

இந்த தலைப்பிற்கான ஒவ்வொரு கேள்வியையும், ஸ்லைடுகளையும், ஃப்ளாஷ் கார்டுகளையும் மற்றும் திருப்புதல் குறிப்புகளையும் பார்க்க இலவச கணக்கை உருவாக்கவும்.

முந்தைய தேர்வுகள்

இந்த தலைப்பிற்கான முந்தைய தேர்வு பயிற்சி விரைவில் வருகிறது.
விரைவில் வருகிறது