Air Water Land Worksheet for Grade 4 with Solved in Pdf Download
Air Water Land Worksheet for Grade 4: Air Water Land Worksheet for Grade 4 students with solution in Pdf download from this page. Total marks is 40 for this worksheet. Students of Standard 4 who are already cleared concept on Air Water Land can solve this paper.
Q1) fill in the blanks (10)
1.) ________can change from day-to-day and hour-to-hour.
2.) The _______ causes changes in the weather conditions.
3.) When the wind blows gently it is called ________.
4.) The movements caused by hot and cold winds are known as_____________.
5.) The process by which water changes into water vapour is called__________.
6.) The amountof water vapour present in the air is called ____________.
7.) The change of water vapour towater on cooling is called ___________.
8.) Rain, snow, hail and frost falling from clouds is called _________.
9.) __________air tells us about the weather.
10.) The blanket of air surrounding the earth is____________
Q2) define the following (10)
1.) Atmosphere:
2.) Sea breeze:
3.) Land breeze:
4.) Evaporation:
5.) Humidity:
6.) Condensation:
7.) Precipitation:
8.) Water cycle:
9.) Fog:
10.) Dew
Q3) briefly explain the following (12)
1) Sea breeze : ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
2) Land breeze: ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
3) Hails and snow: ________________________________________________________________________________________________________________________________________________________________________________________________________________________________
4) Dew:
__________________________________________________________________________________________________________________________________________________________________________________________________________________________
5) Fog:
__________________________________________________________________________________________________________________________________________________________________________________________________________________________
6) Frost:
___________________________________________________________________________________________________________________________________________________________________________________________________________________________
Q4) Arrange the statements according events in the water cycle and draw the water cycle (8)
1) small drops join together to form clouds.
2) When these clouds pass through cooler air, they get cooled further.
3) In the sky, it condenses to form small drops of water.
4) When the sun shines, water from ponds, rivers, lakes, seas etc. changes into water vapour and evaporates.
5) This cycle of evaporation, condensation and precipitation goes on continuously and is called the water cycle.
6) When the water drops become very heavy they fall to the earth as rain.
Answers of the above Worksheet:
Q1) fill in the blanks (10)
1,) Weather can change from day-to-day and hour-to-hour.
2.) The sun causes changes in the weather conditions.
3.) When the wind blows gently it is called breeze.
4.) The movements caused by hot and cold winds are known as convection currents.
5.) The process by which water changes into water vapour is called
6.) The amount of water vapour present in the air is called humidity.
7.) The change of water vapour to water on cooling is called
8.) Rain, snow, hail and frost falling from clouds is called precipitation.
9) Hot and cold air tells us about the weather.
10) The blanket of air surrounding the earth is atmosphere
Q2) define the following (10)
Atmosphere: The blanket of air surrounding the earth
Sea breeze: Wind blowing from the sea to the land during day time
Land breeze: Wind blowing from the land to the sea during night time
Evaporation: The process by which water changes into watervapour
Humidity: The amount of water present in the air
Condensation: The process by which water vapour changes into water
Precipitation: Falling of water in any form (hail, snow, rain, etc.) on the earth
Water cycle: The cycle of evaporation, condensation and precipitation in nature
Fog: When warm and moist air cools rapidly, tiny water droplets of
water are formed and they stay in the air. This is fog.
Dew: water vapour in the air condenses as theair touches the cold surface. This is called dew.
Q3) briefly explain the following (12)
1.) Sea breeze:
During the day, air above the hot soilbecomes hot but the air above the water remains cool. As the hot air rises up, cool air from the sea takes its place. Thus, a coolbreeze blows towards the land duringthe day.
2.) Land breeze:
As the sun sets, land cools faster than thesea. The rapidly cooling land has higherair pressure over it than the sea.This is called land breeze. It blowsat night.
3.) Hails and snow:
If the air around clouds is very cold, as above the mountains, the tiny drops of water freeze into snowflakes or ice crystals. This forms snow or hail stones, which fall from the clouds during winter.
4.) Dew:If it turns chilly at night, water vapour in the aircondenses as theair touches the cold surface. This is called dew. In the morning,you will find the ground, leaves, car surface etc. covered with
5.) Fog:
When warm and moist air cools rapidly, tiny water droplets ofwater are formed and they stay in the air. This is fog. Fog is oftenthickest in valleys and low-lying areas. Fog occurs in winter season.
6.) Frost: When nights become very cold, dew drops freeze to form ice.This is frost. It can be very harmful for the crops.Rain, snow, hail and frost falling from clouds is called precipitation.
Q4) Arrange the statements according events in the water cycle and draw the water cycle (8)
When the sun shines, water from ponds, rivers, lakes, seas etc. changes into water vapour and evaporates.In the sky, it condenses to form small drops of water. small drops join together to form clouds.When these clouds pass through cooler air, they get cooled further.When the water drops become very heavy they fall to the earth as rain.This cycle of evaporation, condensation and precipitation goes on continuously and is called the water cycle.