Water is Chapter 14 taken from JKBOSE Class 6 Science. You will get short notes and question answers in the chapter Water in this post. The previous post was about Chapter 13 Fun with Magnets Question Answers. Let’s get started by having an overview of what you have studied in this chapter. You have studied about following topics in detail in this chapter:
Water Class 6th Question Answers
Overview of Chapter
- HOW MUCH WATER DO WE USE?
- WHERE DO WE GET WATER FROM?
- WATER CYCLE.
- Disappearing Trick of Water.
- Loss of Water by Plants.
- How are clouds formed?
- BACK TO THE OCEANS.
- WHAT IF IT RAINS HEAVILY?
- WHAT IF IT DOES NOT RAIN FOR A LONG PERIOD?
- HOW CAN WE CONSERVE WATER?
- RAINWATER HARVESTING.
HOW MUCH WATER DO WE USE: Water is necessary for all living beings. We use water in homes for drinking, cooking, washing, bathing, brushing teeth and watering plants. In agricultural practices, water is used for irrigation purposes.
WHERE DO WE GET WATER FROM? We get water from different sources like rivers, springs, oceans, seas, groundwater, lakes and ponds, and rain etc.
WATER CYCLE: The circulation of water from the earth’s surface to the atmosphere and back to earth is called the water cycle.
- Disappearing Trick of Water (Evaporation): When wet clothes are spread on a rope or wire, they dry up after some time. The water spilt on the floor dries up and disappears. It happens due to evaporation. Evaporation is the process of changing water into water vapours is called evaporation.
- Loss of Water by Plants (Transpiration): The loss of water from plants as water vapour through the pores (stomata) of their leaves is called transpiration.
- How are clouds formed? The formation of clouds includes the process of evaporation and condensation. The air containing water vapours is heated up by the sun and hot air being lighter goes up in the atmosphere. At higher altitude, the water vapours present in the air gets cooled. The cold-water vapours condense to form tiny droplets of water. These droplets of water form clouds in the sky.
BACK TO THE OCEANS: There is only a small amount of water which is available to us in form of rain and snow. The most of water that falls on the earth in form of rain and snow sooner or later goes back into oceans.
WHAT IF IT RAINS HEAVILY: Rain is useful for us in many ways. However, if it rains heavily, it leads to several problems like waterlogging of roads and streets, flooding, fast-moving water carrying away animals living in water bodies and killing of animals living in the soil.
WHAT IF IT DOES NOT RAIN FOR A LONG PERIOD? If it does not rain for a long period, it leads to drought. The drought condition leads to a shortage of food grains and fodder, starvation and a decrease in the level of groundwater.
HOW CAN WE CONSERVE WATER: We can conserve water in the following ways:
- Turn off the tap immediately after use.
- Take bath by using water in buckets instead of using the shower or flowing tap.
- Wash utensils by filling the water in the basin, not under the flowing tap.
- Do not use full flush if half flush is sufficient.
- The water from washing rice, fruits and vegetables should be used for watering plants.
RAINWATER HARVESTING: The process of collecting and storing rainwater for later use is called rainwater harvesting. It can be done in two ways:
- Pits and Tanks.
- Rooftop rainwater harvesting.
That is being said about the basics of this chapter. Let us move on solutions section now.
Water Class 6th Questions
- Fill up the blanks in the following:
- The process of changing water into its vapour is called ________.
- The process of changing water vapour into water is called ________.
- No rainfall for a year or more may lead to ________ in that region.
- Excessive rains may cause ________.
- The ________ point of ice is 0c. (JKBOSE TEXTBOOK)
- Floods damage soil by causing ________. (JKBOSE TEXTBOOK)
- The process of changing water into its vapour is called evaporation.
- The process of changing water vapour into water is called condensation.
- No rainfall for a year or more may lead to drought in that region.
- Excessive rains may cause floods.
- The melting point of ice is 0c. (JKBOSE TEXTBOOK)
- Floods damage soil by causing erosion. (JKBOSE TEXTBOOK)
- State for each of the following whether it is due to evaporation or condensation:
- Water drops appear on the outer surface of a glass containing cold water.
- Steam rising from wet clothes while they are ironed.
- Fog appearing on a cold winter morning.
- Blackboard dries up after wiping it.
- Steam rising from a hot girdle when water is sprinkled on it.
- Which of the following statements is “true”?
- Water vapour is present in the air only during the monsoon.
Ans. False, Water is always present in the air in small proportions.
- Water evaporates into the air from oceans, rivers and lakes but not from the soil.
Ans. False, Water evaporates into the air from oceans, rivers and lakes but also from the soil.
- The process of water changing into its vapour is called evaporation.
- The evaporation of water takes place only in sunlight.
Ans. Evaporation may occur in sunlight as well as wind.
- Water vapour condenses to form tiny droplets of water in the upper layers of air where it is cooler.
4. Suppose you want to dry your school uniform quickly. Would spreading it near an anghiti or heater help? If yes, how?
Ans. Yes, spreading of uniform near an anghiti or heater would help to dry the school uniform quickly. It is because the heat of anghiti or heater would evaporate the water from the cloth.
5. Take out a cooled bottle of water from the refrigerator and keep it on a table. After some time, you notice a puddle of water around it. Why?
Ans. When a cooled bottle of water is kept on the table, the water vapours present in the air around the bottle get condensed on the surface of the bottle. As a result, a puddle of water appears around it.
6. To clean their spectacles, people often breathe out on glasses to make them wet. Explain why the glasses become wet.
Ans. When we breathe out on glass, the water vapours present in our breath condense to form tiny water droplets. It makes the glasses wet.
7. How are clouds formed?
Ans. The formation of clouds includes the process of evaporation and condensation. The air containing water vapours is heated up by the sun and hot air being lighter goes up in the atmosphere. At higher altitude, the water vapours present in the air gets cooled. The cold-water vapours condense to form tiny droplets of water. These droplets of water form clouds in the sky.
8. When does a drought occur?
Ans. If it does not rain for a long time such as for one year or two years, the soil continues to lose water by evaporation and transpiration and it becomes dry. It leads to drought.
- Explain the formation of the water cycle.
Ans. The circulation of water from the earth’s surface to the atmosphere and back to the earth is called the water cycle. Water falls on the earth in the form of rain, dew and snow etc. The water falls in ponds, streams, and oceans and some amount of water seeps into the earth. The heat of the sun evaporates water and changes it into water vapours. The water vapours rise to a very cold zone in the atmosphere. These water vapours on cooling get condensed to form clouds. These clouds come back to earth in the form of rain and snow and this cycle is repeated again and again.
- What do you understand by
Ans. Groundwater is the part of rainwater that seeps down the earth through the soil until it reaches the rocky material. Groundwater moves slowly and eventually goes into streams, lakes and oceans. So, the water present in lakes, ponds, and rivers is termed groundwater.
b. Running water
Ans. The water that flows down from the mountains in the form of streams and rivers is termed running water. It keeps flowing so it is called running water. Rivers cover a large distance on the land and take the top layer of the soil with them.
c. Rainwater harvesting
Ans. The process of collecting and storing rainwater for later use is called rainwater harvesting. The water collected by this process is used for many purposes like drinking water, irrigation, agriculture, air conditioning, fire-fighting and groundwater recharge etc.
That’s all about Water Class 6th Question Answers. Hope it has helped. Do share your views about this post in the comment section below