Class 4 Science Air Water and Weather Q & A

Last updated on July 6th, 2023 at 08:47 pm

Evaporation and condensation

 

Q – Where do you think the humidity would be the highest?

Ans: At sea coast

 

Q – How clouds are formed?

Ans: As water vapor freezes due to extreme cooling in the upper layers of the atmosphere, cloud formation occurs.

 

Q – What are the factors responsible for change in weather?

Ans: Weather is affected by variations in temperature, humidity, and air movement.

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Long Answer Type Questions on Air water and weather class 4

 

Q – Winds are blown by the heat of the sun. Give Reason?

Ans: The sun’s energy is absorbed by the Earth’s surface, which converts it to heat. The heat produced on the surface of the earth warms the air above it. Wind refers to the movement of air. The uneven heating of the earth’s surface is the root of this phenomenon.

 

Q – On a gloomy day, clothes take longer to dry. Give Reason?

Ans: On a cloudy day, clothes take longer to dry because the rate of evaporation is slower.

 

Q – Wind blows from sea to the land throughout the day. Give Reason?

Ans: During the day, the wind blows from the sea to the land. Since the ground is hotter than the surrounding water, there is less pressure on land than at sea.

 

Q – On a cold winter morning, drops of water can be seen on grass. Give Reason?

Ans: Moisture is found in the air. The temperature is lower in the early morning, especially in the winter, and the air is cooler. At this temperature, air is unable to hold all of its moisture. Dew drops form when excess moisture condenses on a cool surface such as leaves, grass, or car windows. As a result, we see dew drops on cold winter mornings.

 

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