Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
Weather is the daily state of the atmosphere at a specific place and time, influenced by the Sun, wind, clouds, and rain.
The Sun is the main cause of weather changes. It heats the land and water, leading to the movement of air and the evaporation of .
Moving air is called wind. A gentle wind is called a breeze, a strong wind is called a gale, and very strong winds with rain/lightning are called storms.
Seasons occur when the same type of weather continues for a long period (months). The five main seasons in India are Summer, Monsoon (Rainy), Autumn, Winter, and Spring.
Water exists in three states: Solid (Ice), Liquid (Water), and Gas (Water Vapor/Steam). The chemical notation for water is .
Evaporation is the process where liquid changes into water vapor due to heat from the Sun.
Condensation is the process where water vapor cools down and changes back into liquid droplets, forming clouds.
The Water Cycle is the continuous movement of water from the Earth's surface to the sky and back to Earth through processes like evaporation and precipitation.
📐Formulae
💡Examples
Problem 1:
Why do wet clothes dry faster on a sunny day than on a cloudy day?
Solution:
The Sun's heat increases the rate of evaporation.
Explanation:
On a sunny day, the heat from the Sun is stronger, which causes the in the wet clothes to turn into water vapor more quickly compared to a cloudy day when the Sun is hidden.
Problem 2:
Identify the season: 'The trees shed their leaves, and the weather starts becoming slightly cool after the rains.'
Solution:
Autumn
Explanation:
Autumn is the transition season between Monsoon and Winter where many trees shed their leaves and the temperature begins to drop.
Problem 3:
What happens to the level of in a lake during the peak of Summer?
Solution:
The water level decreases.
Explanation:
Due to high temperatures in Summer, the process of evaporation is very high, causing more to turn into vapor and rise into the atmosphere.