A Journey through States of Water
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Investigating Water's Disappearing Act
SubtopicInvestigating Water's Disappearing Act under A Journey through States of Water for Grade 6 CBSE.
Preview questions (no answers)
- 1.
Which of the following is essential for all living organisms?
A.Only food
B.Only air
C.Water
D.Only shelter
- 2.
Does evaporation take place only in the presence of sunlight?
A.Yes
B.No, it takes place in shade too but slower
C.No, it only happens at night
D.No, it only happens on heating on a stove
- 3.
What is the process of changing a gas into a liquid?
A.Freezing
B.Condensation
C.Evaporation
D.Melting
- 4.
Ice cubes floating in a glass of juice are in which state?
A.Liquid
B.Solid
C.Gas
D.Vapor
- 5.
What happens to the water level in the oceans due to the water cycle?
A.It keeps increasing every year
B.It keeps decreasing every year
C.It remains relatively stable because of the cycle
D.It depends on the number of fish in the sea
- 6.
Which state of water is found in the polar ice caps?
A.Liquid
B.Gaseous
C.Solid
D.Plasma
- 7.
The 'disappearing act' of a puddle on a windy day is faster than on a calm day. This is because:
A.Wind carries water droplets away like rain
B.Wind increases the rate of evaporation
C.Wind turns water into ice
D.Wind makes the water sink into the ground
- 8.
Which of these is a way to 'Investigate Water's Disappearing Act' at home?
A.Leaving a bowl of water on a windowsill and marking the level daily.
B.Keeping a piece of iron in water and seeing it rust.
C.Mixing sugar in water and watching it dissolve.
D.Watching water flow down a drain.
- 9.
During a drought, the water cycle is affected. Which of these is a direct consequence of a long-term lack of precipitation?
A.The water table rises.
B.Vegetation increases because there is more sun.
C.Groundwater sources like wells and ponds dry up.
D.Evaporation from the soil stops completely because it is too hot.
- 10.
Why is it that even when it is not raining, the air still contains water?
A.Because water vapor is an invisible gas that is always present in the atmosphere.
B.Because the sky is made of water.
C.Because trees are always spraying water at us.
D.Because the air is actually a liquid.
Download the worksheet for A Journey through States of Water - Investigating Water's Disappearing Act to practice offline. It includes additional chapter-level practice questions.
What are the Different States of Water?
SubtopicWhat are the Different States of Water? under A Journey through States of Water for Grade 6 CBSE.
Preview questions (no answers)
- 1.
Which state of water has no fixed shape but a fixed volume?
A.Solid
B.Liquid
C.Gas
D.Vapor
- 2.
When we take out an ice tray from the freezer, it is in which state?
A.Liquid
B.Solid
C.Gas
D.Plasma
- 3.
What is the boiling point of water in Celsius?
A.B.C.D. - 4.
In which state are the molecules of water moving most freely and rapidly?
A.Ice
B.Liquid water
C.Steam
D.Glacier
- 5.
Humidity is a measure of:
A.How hot the air is
B.How much water vapor is in the air
C.How much rain has fallen
D.How fast the wind is blowing
- 6.
When water freezes to form ice, its volume usually:
A.Decreases
B.Increases
C.Remains the same
D.Becomes zero
- 7.
Which of these is NOT a part of the water cycle?
A.Evaporation
B.Condensation
C.Photosynthesis
D.Precipitation
- 8.
What is the boiling point of pure water at sea level in the Celsius scale?
A.B.C.D. - 9.
Which of the following is responsible for the 'cooling effect' felt during evaporation?
A.The fast-moving molecules leave the surface, lowering the average energy of the remaining liquid
B.The air around the liquid becomes colder because of water vapor
C.Water molecules absorb cold from the atmosphere
D.The liquid reacts with the air to create a cooling gas
- 10.
If you leave a glass of water on a table for several days, the level goes down. This is called:
A.Boiling
B.Condensation
C.Evaporation
D.Precipitation
Download the worksheet for A Journey through States of Water - What are the Different States of Water? to practice offline. It includes additional chapter-level practice questions.
How can We change the States of Water?
SubtopicHow can We change the States of Water? under A Journey through States of Water for Grade 6 CBSE.
Preview questions (no answers)
- 1.
What provides the heat for evaporation in the natural water cycle?
A.The Moon
B.The Wind
C.The Sun
D.The Clouds
- 2.
Water is known as a 'Universal Solvent' because it can __________.
A.Turn into ice easily
B.Dissolve many substances
C.Evaporate quickly
D.Change into steam
- 3.
Hail is which state of water?
A.Liquid
B.Gas
C.Solid
D.Plasma
- 4.
The rate of evaporation __________ when the temperature increases.
A.Decreases
B.Increases
C.Stops
D.Stays the same
- 5.
Study the provided flowchart showing how water changes from one state to another. Which two processes represent changes that happen specifically because of cooling (removal of heat)?
A.Process 1 and Process 2
B.Process 3 and Process 4
C.Process 2 and Process 3
D.Process 1 and Process 4
- 6.
What happens to the level of water in a pond during a very hot summer if there is no rain?
A.It increases due to melting
B.It stays the same
C.It decreases due to evaporation
D.It increases due to condensation
- 7.
Which of these pairs represents a change from a more ordered state to a less ordered state of molecules?
A.Liquid to Solid
B.Gas to Liquid
C.Solid to Liquid
D.Gas to Solid
- 8.
If you heat a sample of ice from to , how many distinct changes of state will it undergo?
A.One
B.Two
C.Three
D.Four
- 9.
In the context of the water cycle, what is 'Infiltration'?
A.Water turning into clouds
B.Water vapor entering plant leaves
C.Rainwater soaking into the ground and filling aquifers
D.Salt being removed from ocean water
- 10.
Which of these is a 'Physical Change' and not a 'Chemical Change'?
A.Burning wood to get ash
B.Iron rusting in moist air
C.Ice melting into water
D.Baking a cake
Download the worksheet for A Journey through States of Water - How can We change the States of Water? to practice offline. It includes additional chapter-level practice questions.
How can Water be Evaporated Faster or Slower?
SubtopicHow can Water be Evaporated Faster or Slower? under A Journey through States of Water for Grade 6 CBSE.
Preview questions (no answers)
- 1.
A farmer spreads grains under the sun to dry them. This uses the principle of:
A.Condensation
B.Evaporation
C.Melting
D.Sublimation
- 2.
Which of these will evaporate faster?
A.Cold water in the shade
B.Hot water in the sun
C.Cold water in a closed room
D.Ice cubes in a freezer
- 3.
Which state of water is invisible?
A.Ice
B.Water vapor
C.Liquid water
D.Snow
- 4.
If humidity is 100%, the rate of evaporation will be:
A.Very fast
B.Extremely slow or nearly zero
C.Double the normal rate
D.Triple the normal rate
- 5.
How does the nature of the liquid (e.g., water vs. alcohol) affect evaporation?
A.All liquids evaporate at the same rate
B.Liquids with weaker intermolecular forces evaporate faster
C.Liquids with stronger intermolecular forces evaporate faster
D.Nature of the liquid has no effect
- 6.
When we mop a floor with water, the water disappears after some time. This is an example of:
A.Condensation
B.Evaporation
C.Sublimation
D.Precipitation
- 7.
Why is it easier to dry clothes in a desert climate compared to a coastal climate?
A.Coastal air is drier
B.Desert air has lower humidity
C.Coastal areas have no wind
D.Deserts are always at
- 8.
Why does a large lake evaporate more water than a small pond, even if they are right next to each other and experience the same weather?
A.The lake has a much larger total surface area, providing more 'exit points' for water molecules to enter the air.
B.The lake is deeper, and deep water is naturally more prone to turning into vapor.
C.The lake has more fish, and their movement helps splash water into the air to evaporate.
D.The pond's small size creates a protective 'dome' of humidity that the lake cannot maintain.
- 9.
Which factor is being manipulated if a student puts one sample of water in a dark cupboard and another under a bright desk lamp, keeping everything else the same?
A.Temperature (due to radiant heat from the lamp).
B.Surface area of the liquid.
C.Humidity of the air surrounding the sample.
D.Wind speed in the room.
- 10.
Consider a scenario where you have two identical pans of water. Pan A is placed in a room with a fan blowing directly over it. Pan B is in the same room, but the fan is blowing in the opposite direction, creating a general air circulation but no direct wind over Pan B. Which pan evaporates more?
A.Pan A, because the direct wind is more efficient at removing the vapor layer immediately above the water surface.
B.Pan B, because the general circulation of air is better for evaporation than a direct blast of wind.
C.Both will evaporate at exactly the same rate because the humidity of the whole room will change at the same rate.
D.Pan B, because the direct wind on Pan A actually cools the water too much, slowing down evaporation.
Download the worksheet for A Journey through States of Water - How can Water be Evaporated Faster or Slower? to practice offline. It includes additional chapter-level practice questions.
Cooling Effect
SubtopicCooling Effect under A Journey through States of Water for Grade 6 CBSE.
Preview questions (no answers)
- 1.
What do we call the process of water falling from the sky as rain or snow?
A.Evaporation
B.Condensation
C.Precipitation
D.Transpiration
- 2.
Which of the following will cool down your body the most on a hot day?
A.Wearing woolen clothes
B.Sitting in a closed room
C.Sweating and standing under a fan
D.Drinking hot milk
- 3.
The rate of evaporation increases with an increase in:
A.Humidity
B.Surface area
C.Coldness
D.Darkness
- 4.
Evaporation is a ______ process than boiling.
A.Faster
B.Slower
C.Noisier
D.Hotter
- 5.
Reema wrapped a thin, wet muslin cloth around a metal water bottle to keep the water cool during a hot summer day. Which of the following best describes the process causing the cooling effect inside the bottle?
A.The wet cloth acts as a shield that prevents all heat from the sun from reaching the bottle.
B.The water in the cloth evaporates by taking the required heat from the bottle, making it colder.
C.The cold water from the wet cloth seeps through the metal walls to mix with the water inside.
D.The wet cloth increases the humidity around the bottle, which prevents the bottle from heating up.
- 6.
Which of the following is a result of the cooling effect of evaporation?
A.Water boiling in a kettle
B.Feeling cold after a shower
C.Ice melting on a plate
D.Steam coming out of a pressure cooker
- 7.
Transpiration is a process where:
A.Water evaporates from the surface of the ocean
B.Water evaporates from the leaves of plants
C.Water turns into ice in the mountains
D.Water is filtered by the soil
- 8.
In the 'A Journey through States of Water' curriculum, the cooling effect is a prime example of which energy transformation?
A.Chemical energy to Electrical energy
B.Thermal energy to Latent energy (potential energy of molecules)
C.Nuclear energy to Heat energy
D.Sound energy to Kinetic energy
- 9.
If the temperature is and the dew point is also , will a wet towel provide any cooling?
A.Yes, it will cool down to .
B.No, because the air is at relative humidity, and no net evaporation can occur.
C.Yes, because the towel is naturally colder than the air.
D.No, because the towel will catch fire at .
- 10.
A hiker is sweating profusely. He decides to take off his wet shirt and hang it up, but he stays in the shade. Why might he feel colder if he puts the wet shirt back on even though the shirt is the same temperature as the air?
A.The shirt has absorbed 'cold' from the air.
B.The evaporation of the water from the shirt will pull heat directly from his body skin.
C.The shirt becomes heavier when wet, pressing against his nerves.
D.Cotton fabric reacts with sweat to produce ice.
Download the worksheet for A Journey through States of Water - Cooling Effect to practice offline. It includes additional chapter-level practice questions.
How Do Clouds Give us Rain?
SubtopicHow Do Clouds Give us Rain? under A Journey through States of Water for Grade 6 CBSE.
Preview questions (no answers)
- 1.
Water cycle is a _____ process.
A.Slow
B.Continuous
C.Temporary
D.One-time
- 2.
Most of the water on Earth is _____.
A.Fresh water
B.Saline water
C.Distilled water
D.Dirty water
- 3.
What is the process of changing ice into water called?
A.Freezing
B.Melting
C.Boiling
D.Condensation
- 4.
Large pieces of ice floating in the ocean are called:
A.Ice cubes
B.Icebergs
C.Hailstones
D.Snowmen
- 5.
Based on the atmospheric processes shown in the flowchart, why does water vapor typically form clouds only after it has risen high into the sky?
A.Because the air higher up is cooler, which is necessary for condensation to occur.
B.Because the sun's heat is only strong enough to turn vapor into clouds in the upper atmosphere.
C.Because there is less gravity higher up, allowing water to stay floating in the air.
D.Because plants only release water vapor at heights above 1,000 meters.
- 6.
Which of the following will happen if the water table in an area goes down significantly?
A.Rivers will start flowing backwards
B.It will be easier to get water from hand pumps
C.It will be difficult to get water from tube wells
D.The area will experience heavy snowfall
- 7.
Rainwater harvesting is especially helpful in areas where:
A.There is excess flood water always
B.Groundwater levels are very deep
C.The soil cannot absorb any water
D.It rains every single day
- 8.
Which of these would be the most effective way to prevent 'surface runoff' and increase 'infiltration' in a garden?
A.Paving the garden with smooth tiles.
B.Sloping the garden towards the street.
C.Adding a layer of organic mulch and planting more shrubs.
D.Removing all the soil and replacing it with plastic.
- 9.
In the process of 'Sublimation', which stage is skipped?
A.Solid
B.Liquid
C.Gas
D.Plasma
- 10.
What role does the 'atmosphere' play in the water cycle beyond holding clouds?
A.It acts as a filter for salt.
B.It acts as a medium for the transport of water vapor from one region to another.
C.It produces the heat needed for evaporation.
D.It has no role other than holding clouds.
Download the worksheet for A Journey through States of Water - How Do Clouds Give us Rain? to practice offline. It includes additional chapter-level practice questions.
Another Mystery
SubtopicAnother Mystery under A Journey through States of Water for Grade 6 CBSE.
Preview questions (no answers)
- 1.
Which of the following will slow down the drying of wet clothes?
A.Strong wind
B.Hot sun
C.High humidity
D.Spreading the clothes
- 2.
Can water exist in all three states at the same time on Earth?
A.Yes
B.No
C.Only in summer
D.Only in space
- 3.
Which form of water is found in the atmosphere as a gas?
A.Fog
B.Clouds
C.Water vapor
D.Mist
- 4.
Plants lose most of their water through ____________.
A.Roots
B.Flowers
C.Stomata in leaves
D.Stem
- 5.
A student uses the following flowchart to track a water molecule's journey through different states. At which step does the molecule change from a state that has a fixed volume to a state that does not have a fixed volume?
A.Step 4
B.Step 1
C.Step 2
D.Step 3
- 6.
Frost is formed when water vapor turns directly into ice on a cold surface. This is a special type of:
A.Evaporation
B.Melting
C.Deposition
D.Boiling
- 7.
Which process is mainly responsible for replenishment of ground water?
A.Evaporation
B.Transpiration
C.Precipitation and Infiltration
D.Condensation
- 8.
A student is observing water boiling in a kettle. As shown in the diagram, they notice a clear, invisible gap (Area A) right at the mouth of the spout, while a visible white 'cloud' (Area B) forms a few centimeters further away. Which of the following statements correctly identifies the states of water in these two areas?
A.Area A consists of liquid water being pushed out, while Area B consists of water vapor.
B.Area A consists of invisible water vapor in a gaseous state, while Area B consists of tiny droplets of liquid water formed by condensation.
C.Area A is a vacuum created by high heat, while Area B is gaseous water vapor.
D.Area A and Area B both represent water in its gaseous state, but they look different due to the change in temperature.
- 9.
Which of these factors does NOT affect the rate of evaporation of water from a lake?
A.The speed of the wind blowing over the lake
B.The depth of the water at the center of the lake
C.The temperature of the surrounding air
D.The surface area of the lake
- 10.
A 'Bawari' is a traditional Indian method for:
A.Generating hydroelectricity
B.Storing and harvesting rainwater
C.Testing the purity of water
D.Filtering seawater for drinking
Download the worksheet for A Journey through States of Water - Another Mystery to practice offline. It includes additional chapter-level practice questions.