If you are looking for TN Board Class 8 Geography Unit 2 Weather and Climate extra que and ans, then you are at the right place.
Q: What is the difference between weather and climate?
A: Weather refers to the day-to-day conditions of the atmosphere in a place, while climate is the average weather conditions of a place over a long period, usually 35 years.
Q: What are the major elements of weather and climate?
A: The major elements of weather and climate are temperature, precipitation, pressure, humidity, and wind.
Q: How is temperature measured?
A: Temperature is measured using instruments like thermometers, Stevenson screens, and minimum and maximum thermometers.
Q: What are the three heat zones of the Earth?
A: The three heat zones of the Earth are the Torrid Zone, Temperate Zone, and Frigid Zone.
Q: How is air pressure measured?
A: Air pressure is measured using a barometer or aneroid barometer.
Q: What is humidity and how is it expressed?
A: Humidity refers to the amount of water vapor in the atmosphere. It can be expressed as specific humidity, absolute humidity, or relative humidity.
Q: What instrument is used to measure humidity?
A: Humidity is measured using a hygrometer.
Q: What are the three categories of wind systems?
A: The three categories of wind systems are planetary winds, seasonal winds, and local winds.
Q: How is wind direction measured?
A: Wind direction is measured using a wind vane or weather cock.
Q: What is the composition of Earth’s atmosphere?
A: Earth’s atmosphere contains about 78% nitrogen, 21% oxygen, 0.97% argon, 0.03% carbon dioxide, and 0.04% trace amounts of other gases and water vapor.
Q: What is the Beaufort scale used for?
A: The Beaufort scale is used for measuring wind speed based on observation rather than accurate measurement.
Q: What causes the differences in climate between Yuktha’s location in Tamil Nadu and Tiya’s in Auckland?
A: The differences are due to their locations in different hemispheres, resulting in opposite seasons and different weather conditions.
Q: What is an isobar?
A: An isobar is an imaginary line used to show the distribution of air pressure on weather maps.
Q: How is rainfall measured?
A: Rainfall is measured using a rain gauge.
Q: What is the standard air pressure at sea level?
A: The standard air pressure at sea level is 1013.25 mb.
Q: What is the lapse rate in the troposphere?
A: The lapse rate in the troposphere is 6.5 degrees Celsius per 1000 meters.
Q: Who developed the first climatic atlas of the world?
A: Al-Balakhi, an Arab Geographer, collected climatic data from Arab travelers and prepared the first climatic atlas of the world.
Q: What is the highest temperature ever recorded on Earth?
A: The highest temperature ever recorded on Earth is 56.7°C (134°F), recorded on July 10, 1913, at Greenland Ranch in Death Valley, California, USA.
Q: How do planetary winds differ from seasonal winds?
A: Planetary winds blow in the same direction throughout the year, while seasonal winds change direction according to the season.
Q: What is a wind rose used for?
A: A wind rose is a diagram used to depict the direction and periods (number of days) of prevailing winds on a map.
