Water – The Essence of Life
Class 5 EVS | Complete Questions & Answers
Page 3
Q: What is this unit about?
This unit highlights the crucial role of water in nature and life on Earth. Students learn about water’s various forms, its movement, importance for living beings, and ways to conserve it.
Page 5
Q1: Do you think we can drink the water present in the oceans?
No, we cannot drink ocean water because it is salty and not suitable for drinking.
Q2: What can ocean water be used for?
Ocean water is used for making salt, and sometimes after desalination, for getting freshwater. It is also home to many plants and animals.
Q3: Where can we find freshwater? Identify the different sources from the given images and write their names.
| Source | Name |
|---|
| River | Ganga, Yamuna, Godavari, etc. |
| Pond/Lake | Wular Lake, Dal Lake, etc. |
| Handpump/Well | Groundwater sources |
| Tap/Reservoir | Storage tanks or dams |
Water – The Essence of Life
Class 5 EVS | Complete Questions & Answers
Page 3
Q: What is this unit about?
This unit highlights the crucial role of water in nature and life on Earth. Students learn about water’s various forms, its movement, importance for living beings, and ways to conserve it.
Page 5
Q1: Do you think we can drink the water present in the oceans?
No, we cannot drink ocean water because it is salty and not suitable for drinking.
Q2: What can ocean water be used for?
Ocean water is used for making salt, and sometimes after desalination, for getting freshwater. It is also home to many plants and animals.
Q3: Where can we find freshwater? Identify the different sources from the given images and write their names.
| Source | Name |
|---|
| River | Ganga, Yamuna, Godavari, etc. |
| Pond/Lake | Wular Lake, Dal Lake, etc. |
| Handpump/Well | Groundwater sources |
| Tap/Reservoir | Storage tanks or dams |
Page 6
Q1: Where do the water droplets on the outside of a glass with ice come from?
The water droplets come from the air. The water vapor in the air cools down on touching the cold glass and forms droplets.
Q2: What happens to the ice cubes after some time in the glass?
The ice cubes melt and change into water.
Q3: If we heat water, what will happen?
The water will change into steam (water vapor).
Page 7
Q1: What do you observe when you put water in sunlight for three days?
The water level goes down because some of it changes into water vapor and mixes with air.
Q2: What is the water cycle?
The constant movement of water from the earth to the atmosphere and back again, as water evaporates, forms clouds, and returns as rain, is called the water cycle.
Page 8
Q: What forms does water take in nature?
Water takes the form of liquid (rain, river), solid (ice, snow), and vapor (steam, fog, clouds) in nature.
Page 9
Q: What happens to rainwater after it falls on the ground?
Some rainwater is absorbed by the soil and becomes groundwater, while some flows into rivers, lakes, or seas as surface water.
Q: What is groundwater?
Groundwater is water stored below the earth’s surface and can be drawn using wells, tube wells, or handpumps.
Page 10
Q: Which area (concrete road, green lawn, paved area) helps best in groundwater recharge?
The green lawn helps best in groundwater recharge because it allows rainwater to seep into the ground.
Q: Why can't rainwater go into the ground easily in cities with many cemented surfaces?
Because cement and concrete do not let water pass through, so less water reaches underground to recharge groundwater.
Page 11
Q: What are the ways open areas help in groundwater recharge?
Open areas like soak pits, ponds, and tree plantations allow rainwater to seep into the ground, increasing groundwater.
Q: Give an example of a water-positive village in India.
Hiware Bazar in Maharashtra is an example of a water-positive village due to its successful rainwater harvesting and water management.
Page 12
Q: What is surface water?
Surface water is found in rivers, ponds, lakes, and other open water bodies.
Q: What helps a river decide its path?
The shape and slope of the land help a river decide its path; water flows from high areas to low areas.
Q: What did you observe when you poured mustard seeds on a slope?
The seeds moved down, following the slope, sometimes gathering in low areas (like water in lakes/rivers).
Page 13
Q: Name a river that does not flow into a sea.
The Luni River, originating from the Aravalli Range in Rajasthan, does not reach the sea but ends in the marshy lands of the Rann of Kutch.
Q: Which direction do most rivers in India flow, and where do they end?
Most rivers in North and East India flow towards the Bay of Bengal; Narmada and some others flow into the Arabian Sea.
Q: Fill in the table (from map):
| River Name | Moves towards |
|---|
| Godavari | Bay of Bengal |
| Narmada | Arabian Sea |
| Ganga | Bay of Bengal |
Page 15
Q: How do animals on land differ from animals in water? Complete the table.
| Animals on Land | Animals in Water |
|---|
| Cannot breathe in water | Have fins to swim |
| Have lungs to breathe air | Have gills to breathe underwater |
| Often have four legs | Many have no legs, use tails/fins |
Page 16
Q: Name any two animals and two plants found in/near pond water (from the information card).
Animals: Dragonfly, Pond Heron, Water Scorpion, Freshwater Turtle
Plants: Lotus/Water Lily (floating), Water Hyacinth (free floating), Reeds (edge plants)
Page 17
Q: Complete the movement table for animals observed in water.
| Name of Bird/Animal | Mouth/Beak | Movement (Legs/Fins/Feet) |
|---|
| Fish | Round mouth facing upwards | Fins for swimming |
| Pond Heron | Pointed beak | Long legs for wading, wings for flying |
| Frog | Wide mouth | Webbed feet for swimming, legs for hopping |
Q: Draw and name plants you saw in/near the water (students should draw and label in notebook).
Example: Lotus – "कमल", Water Hyacinth – "जलकुंभी"
Page 18
Q: What do you observe when you put a drop of water on plain paper and on wax crayon colored paper?
On plain paper, water spreads and is absorbed. On crayon-colored paper, water forms drops and does not spread, because the waxy surface is waterproof.
Q: Why do some leaves have a waxy coating?
The waxy coating on leaves helps keep water out, protecting the plant from absorbing too much water.
Page 19
Q: Why is freshwater important for life on Earth?
Freshwater supports plants, animals, and humans for drinking, growing crops, and sustaining ecosystems. All living beings depend on freshwater to survive.
Q: What is the role of the water cycle?
The water cycle constantly moves water between the earth and the atmosphere, ensuring that water is available for all living things.
Page 20
Q1: Match the following:
| Answer |
|---|
| (i) Ocean water | (c) Not fit for drinking |
| (ii) Snow | (a) Solid form of water |
| (iii) Steam | (b) Vapour form of water |
| (iv) Rainwater | (d) Freshwater |
Q2: Why do you think most water on earth cannot be used for drinking or farming?
Because most of it is salty (like oceans) or frozen (icecaps), so only a small fraction is available as freshwater.
Q3: Large number of living beings live near water bodies. Why?
Because water bodies provide food, drinking water, habitat, and are important for survival of plants and animals.
Q4: What would happen if it did not rain in your region for two years?
Water sources would dry up, crops and plants would die, animals and people would face drought and water scarcity.
Q5: What do you think happens to rainwater in a forest compared to a city?
In a forest, rainwater soaks into the ground and recharges groundwater, helping plants. In cities, much is lost as runoff due to concrete, so less water goes into the ground.
Q6: Can you design a house or school that conserves water wisely? What would it include?
Yes, it should have rainwater harvesting system, open ground for water seepage, taps that don’t leak, tanks for storing water, and awareness posters for water saving.
