Practice Worksheet : Chapter 8 – A Journey Through States of Water Class 6 Science
(CBSE Class 6 Science – Curiosity Book)
Class 6 Science – Chapter 8 A Journey Through States of Water – Practice Worksheet
Complete Worksheet for Class 6 Science – Chapter 8: A Journey Through States of Water (Curiosity Textbook).
SET – 1 (20 Marks) – A Journey Through States of Water
Section A – Fill in the Blanks (5 × 1 = 5 marks)
- The process of water changing into vapour is called ____________.
- Water droplets on a cold bottle are formed due to ____________.
- Ice is the ____________ form of water.
- Water vapour rises upward because it is ____________ than air.
- Dew drops form on the ground due to ____________.
Section B – True or False (5 × 1 = 5 marks)
- Water vapour is visible. ____________
- Water changes to water vapour when heated. ____________
- Condensation cools the surroundings. ____________
- Wind increases the rate of evaporation. ____________
- Clouds are formed by evaporation. ____________
Section C – MCQs (5 × 1 = 5 marks)
- The cooling in earthen pots happens due to
a) burning
b) evaporation
c) freezing
d) condensation - Water changes into solid at
a) boiling
b) freezing
c) melting
d) condensing - Dew is formed due to
a) evaporation
b) condensation
c) freezing
d) melting - Which one is a solid state of water?
a) steam
b) ice
c) vapour
d) cloud - Water cycle mainly involves
a) boiling
b) burning
c) evaporation and condensation
d) freezing
Section D – Match the Following (5 × 1 = 5 marks)
| Column I | Column II |
|---|---|
| 1. Ice | a) Changes into vapour |
| 2. Water | b) Solid form of water |
| 3. Water vapour | c) Gas form |
| 4. Melting | d) Changes shape |
| 5. Liquid | e) Solid to liquid |
Section E – Short Answer Question (1 × 2 = 2 marks)
(Answer any ONE)
- Why does evaporation cause cooling?
- Why do clothes dry slowly on rainy days?
Section F – Long Answer Question (1 × 3 = 3 marks)
- Explain condensation with two daily-life examples.
ANSWERS – SET – 1 (20 Marks)
Section A – Fill in the Blanks (1 mark each)
- The process of water changing into vapour is called ____________.
Answer: Evaporation - Water droplets on a cold bottle are formed due to ____________.
Answer: Condensation - Ice is the ____________ form of water.
Answer: Solid - Water vapour rises upward because it is ____________ than air.
Answer: Lighter - Dew drops form on the ground due to ____________.
Answer: Condensation
Section B – True/False (1 mark each)
- Water vapour is visible.
Answer: False - Water changes to water vapour when heated.
Answer: True - Condensation cools the surroundings.
Answer: True - Wind increases the rate of evaporation.
Answer: True - Clouds are formed by evaporation.
Answer: False (Clouds form by condensation)
Section C – MCQs (1 mark each)
- The cooling in earthen pots happens due to
a) burning b) evaporation c) freezing d) condensation
Answer: b) evaporation - Water changes into solid at
a) boiling b) freezing c) melting d) condensing
Answer: b) freezing - Dew is formed due to
a) evaporation b) condensation c) freezing d) melting
Answer: b) condensation - Which one is a solid state of water?
a) steam b) ice c) vapour d) cloud
Answer: b) ice - Water cycle mainly involves
a) boiling b) burning c) evaporation and condensation d) freezing
Answer: c) evaporation and condensation
Section D – Match the Following (1 mark each)
| Column I | Column II | Answer |
|---|---|---|
| 1. Ice | a) Changes into vapour | 1 – b (Solid form of water) |
| 2. Water | b) Solid form of water | 2 – d (Changes shape) |
| 3. Water vapour | c) Gas form | 3 – c |
| 4. Melting | d) Changes shape | 4 – e (Solid to liquid) |
| 5. Liquid | e) Solid to liquid | 5 – d |
Section E – Short Answer (2 marks)
Question: Why does evaporation cause cooling?
Answer: During evaporation, water absorbs heat from the surroundings, making the surroundings cooler.
Section F – Long Answer (3 marks)
Question: Explain condensation with two daily-life examples.
Answer:
Condensation is the process where water vapour changes into liquid water when cooled.
Examples:
- Water droplets on the outside of a cold glass.
- Dew formation on grass in early morning.
SET – 2 (20 Marks) – A Journey Through States of Water
Section A – Fill in the Blanks
- Ice melts when ____________ is supplied.
- The process of vapour changing into water is ____________.
- Clouds are formed by the ____________ of water vapour.
- Water kept in sunlight evaporates ____________.
- ____________ slows down evaporation.
Section B – True or False
- Condensation forms clouds. ____________
- Evaporation takes place only during summer. ____________
- Steam is the gaseous state of water. ____________
- Water has a fixed shape. ____________
- Humidity increases evaporation. ____________
Section C – MCQs
- Water vapour is
a) liquid
b) solid
c) gas
d) none - Melting of ice is
a) solid to liquid
b) liquid to solid
c) gas to liquid
d) liquid to gas - More evaporation takes place when
a) it is cold
b) it is windy
c) it is humid
d) air does not move - Which is an example of condensation?
a) Clothes drying
b) Ice melting
c) Dew formation
d) Water boiling - Water cycle begins with
a) rain
b) evaporation
c) freezing
d) condensation
Section D – Match the Following
| Column I | Column II |
|---|---|
| 1. Freezing | a) Gas to liquid |
| 2. Condensation | b) Liquid to vapour |
| 3. Evaporation | c) Liquid to solid |
| 4. Steam | d) Clouds |
| 5. Cloud formation | e) Gaseous water |
Section E – Short Answer (Any 1)
- Why do we see dew drops in the morning?
- What is humidity?
Section F – Long Answer
- Describe the water cycle with a labelled sequence.
ANSWERS – SET – 2 (20 Marks)
Section A – Fill in the Blanks
- Ice melts when ____________ is supplied.
Answer: Heat - The process of vapour changing into water is ____________.
Answer: Condensation - Clouds are formed by the ____________ of water vapour.
Answer: Condensation - Water kept in sunlight evaporates ____________.
Answer: Faster - ____________ slows down evaporation.
Answer: Humidity
Section B – True/False
- Condensation forms clouds.
Answer: True - Evaporation takes place only during summer.
Answer: False - Steam is the gaseous state of water.
Answer: True - Water has a fixed shape.
Answer: False - Humidity increases evaporation.
Answer: False
Section C – MCQs
- Water vapour is
a) liquid b) solid c) gas d) none
Answer: c) gas - Melting of ice is
a) solid to liquid b) liquid to solid
c) gas to liquid d) liquid to gas
Answer: a) solid to liquid - More evaporation takes place when
a) it is cold
b) it is windy
c) it is humid
d) air does not move
Answer: b) it is windy - Which is an example of condensation?
a) Clothes drying
b) Ice melting
c) Dew formation
d) Water boiling
Answer: c) Dew formation - Water cycle begins with
a) rain b) evaporation c) freezing d) condensation
Answer: b) evaporation
Section D – Match the Following
| Column I | Column II | Answer |
|---|---|---|
| 1. Freezing | a) Gas to liquid | 1 – c (Liquid to solid) |
| 2. Condensation | b) Liquid to vapour | 2 – a |
| 3. Evaporation | c) Liquid to solid | 3 – b |
| 4. Steam | d) Clouds | 4 – e (Gaseous water) |
| 5. Cloud formation | e) Gaseous water | 5 – d |
Section E – Short Answer (2 marks)
Question: Why do we see dew drops in the morning?
Answer: Because air cools at night, causing water vapour to condense into droplets on grass and leaves.
Section F – Long Answer (3 marks)
Question: Describe the water cycle.
Answer: Water evaporates from water bodies, rises as vapour, cools to condense into clouds, and falls back as rain, completing the cycle.
SET – 3 (20 Marks) – A Journey Through States of Water
Section A – Fill in the Blanks
- Water takes the ____________ of its container.
- Evaporation happens faster when wind ____________.
- Condensation forms tiny ____________ of water.
- Steam is the ____________ form of water.
- Fog is formed due to ____________.
Section B – True or False
- Gas spreads the most. ____________
- Ice has no fixed shape. ____________
- Evaporation is faster in sunlight. ____________
- Water vapour is heavier than air. ____________
- Clouds contain water droplets. ____________
Section C – MCQs
- Water becomes ice when
a) cooled
b) heated
c) shaken
d) pressed - Which state of water can flow?
a) ice
b) vapour
c) water
d) none - Water droplets on a cold glass are due to
a) melting
b) freezing
c) condensation
d) evaporation - Which is NOT a state of water?
a) ice
b) water
c) vapour
d) snowstorm - The main source of water on earth is
a) rivers
b) oceans
c) taps
d) clouds
Section D – Match the Following
| Column I | Column II |
|---|---|
| 1. Ice cream | a) Solid |
| 2. Steam | b) Gas |
| 3. Rain | c) Liquid |
| 4. Water | d) Condensed water |
| 5. Fog | e) Tiny droplets |
Section E – Short Answer (Any 1)
- Why does water vapour rise up?
- How does a fan help in drying clothes?
Section F – Long Answer
- Explain evaporation with three examples from everyday life.
ANSWERS – SET – 3 (20 Marks)
Section A – Fill in the Blanks
- Water takes the ____________ of its container.
Answer: Shape - Evaporation happens faster when wind ____________.
Answer: Blows - Condensation forms tiny ____________ of water.
Answer: Droplets - Steam is the ____________ form of water.
Answer: Gaseous - Fog is formed due to ____________.
Answer: Condensation
Section B – True/False
- Gas spreads the most.
Answer: True - Ice has no fixed shape.
Answer: False - Evaporation is faster in sunlight.
Answer: True - Water vapour is heavier than air.
Answer: False - Clouds contain water droplets.
Answer: True
Section C – MCQs
- Water becomes ice when
a) cooled b) heated c) shaken d) pressed
Answer: a) cooled - Which state of water can flow?
a) ice b) vapour c) water d) none
Answer: c) water - Water droplets on a cold glass are due to
a) melting b) freezing c) condensation d) evaporation
Answer: c) condensation - Which is NOT a state of water?
a) ice b) water c) vapour d) snowstorm
Answer: d) snowstorm - The main source of water on earth is
a) rivers b) oceans c) taps d) clouds
Answer: b) oceans
Section D – Match the Following
| Column I | Column II | Answer |
|---|---|---|
| 1. Ice cream | a) Solid | 1 – a |
| 2. Steam | b) Gas | 2 – b |
| 3. Rain | c) Liquid | 3 – c |
| 4. Water | d) Condensed water | 4 – c |
| 5. Fog | e) Tiny droplets | 5 – e |
But since “Water → d” (Condensed water) is also correct in scientific context (water is condensed vapour), the accurate answer according to NCERT concept is:
Final Correct Answers
1 → a
2 → b
3 → c
4 → d
5 → e
Section E – Short Answer
Question: Why does water vapour rise up?
Answer: Because water vapour is lighter than air.
Section F – Long Answer
Question: Explain evaporation with three examples.
Answer:
Evaporation is the process where liquid water changes into vapour.
Examples:
- Clothes drying
- Sweat drying from skin
- Water on floor drying after mopping
SET – 4 (20 Marks) – A Journey Through States of Water
Section A – Fill in the Blanks
- ____________ cools surroundings because it takes heat from them.
- Water droplets falling from the sky are called ____________.
- When cooled, water vapour ____________.
- Ice ____________ on heating.
- On humid days, evaporation becomes ____________.
Section B – True or False
- Water freezes at high temperature. ____________
- Condensation requires cooling. ____________
- Steam is visible to us. ____________
- Ice has fixed shape. ____________
- Fog is formed due to condensation. ____________
Section C – MCQs
- When water freezes it becomes
a) gas
b) solid
c) vapour
d) steam - What slows evaporation?
a) heat
b) sunlight
c) humidity
d) wind - Which state spreads the most?
a) liquid
b) gas
c) solid
d) none - Clouds are mainly made of
a) steam
b) dust only
c) water droplets
d) vapour only - Dew is formed on
a) cold surfaces
b) hot roads
c) heaters
d) fans
Section D – Match the Following
| Column I | Column II |
|---|---|
| 1. Boiling | a) Cooling water vapour |
| 2. Condensation | b) Solid to liquid |
| 3. Melting | c) Liquid to vapour |
| 4. Freezing | d) Water to ice |
| 5. Vapour | e) Gas form |
Section E – Short Answer (Any 1)
- What is condensation? Give an example.
- What is the importance of the water cycle?
Section F – Long Answer
- Explain with a diagram (description allowed) how heat changes the state of water.
ANSWERS – SET – 4 (20 Marks)
Section A – Fill in the Blanks
- ____________ cools surroundings because it takes heat from them.
Answer: Evaporation - Water droplets falling from the sky are called ____________.
Answer: Rain - When cooled, water vapour ____________.
Answer: Condenses - Ice ____________ on heating.
Answer: Melts - On humid days, evaporation becomes ____________.
Answer: Slower
Section B – True/False
- Water freezes at high temperature.
Answer: False - Condensation requires cooling.
Answer: True - Steam is visible to us.
Answer: False - Ice has fixed shape.
Answer: True - Fog is formed due to condensation.
Answer: True
Section C – MCQs
- When water freezes it becomes
a) gas b) solid c) vapour d) steam
Answer: b) solid - What slows evaporation?
a) heat b) sunlight c) humidity d) wind
Answer: c) humidity - Which state spreads the most?
a) liquid b) gas c) solid d) none
Answer: b) gas - Clouds are mainly made of
a) steam b) dust only c) water droplets d) vapour only
Answer: c) water droplets - Dew is formed on
a) cold surfaces b) hot roads c) heaters d) fans
Answer: a) cold surfaces
Section D – Match the Following
| Column I | Column II | Answer |
|---|---|---|
| 1. Boiling | a) Cooling water vapour | 1 – c (Liquid to vapour) |
| 2. Condensation | b) Solid to liquid | 2 – a |
| 3. Melting | c) Liquid to vapour | 3 – b |
| 4. Freezing | d) Water to ice | 4 – d |
| 5. Vapour | e) Gas form | 5 – e |
Section E – Short Answer
Question: What is condensation? Give an example.
Answer: Condensation is the change of water vapour into liquid water. Example: Water droplets on cold glass.
Section F – Long Answer
Question: Explain how heat changes the state of water.
Answer:
Heat melts ice into water, and more heat changes water into vapour (evaporation). Removing heat condenses vapour back into water and freezing changes water into ice.
SET – 5 (20 Marks) – A Journey Through States of Water
Section A – Fill in the Blanks
- ____________ is the solid state of water.
- Clouds are formed because water vapour ____________.
- Evaporation is faster when the ____________ area is more.
- On heating, water changes into ____________.
- Clouds bring ____________ to the earth.
Section B – True or False
- Water vapour is invisible. ____________
- Dew forms at night because surfaces are warm. ____________
- Evaporation decreases when wind blows. ____________
- Ice can melt into water. ____________
- Condensation needs cooling. ____________
Section C – MCQs
- Water vapour becomes water by
a) freezing
b) condensation
c) melting
d) boiling - How do clouds form?
a) boiling
b) evaporation
c) condensation of water vapour
d) freezing - Which one has a fixed shape?
a) water
b) vapour
c) ice
d) steam - Evaporation becomes fast when
a) air is still
b) humidity is high
c) it is windy
d) it is dark - Fog is
a) solid
b) gas
c) tiny water droplets
d) snow
Section D – Match the Following
| Column I | Column II |
|---|---|
| 1. Rain | a) Solid water |
| 2. Ice | b) Tiny droplets in air |
| 3. Steam | c) Water droplets falling |
| 4. Fog | d) Gas form of water |
| 5. Water vapour | e) Invisible gas |
Section E – Short Answer (Any 1)
- Why do we see tiny droplets on bathroom mirrors after a bath?
- What is evaporation?
Section F – Long Answer
- Describe the formation of clouds and rainfall.
ANSWERS: SET – 5 (20 Marks)
Section A – Fill in the Blanks
- ____________ is the solid state of water.
Answer: Ice - Clouds are formed because water vapour ____________.
Answer: Condenses - Evaporation is faster when the ____________ area is more.
Answer: Surface - On heating, water changes into ____________.
Answer: Vapour - Clouds bring ____________ to the earth.
Answer: Rain
Section B – True/False
- Water vapour is invisible.
Answer: True - Dew forms at night because surfaces are warm.
Answer: False - Evaporation decreases when wind blows.
Answer: False - Ice can melt into water.
Answer: True - Condensation needs cooling.
Answer: True
Section C – MCQs
- Water vapour becomes water by
a) freezing b) condensation c) melting d) boiling
Answer: b) condensation - How do clouds form?
a) boiling b) evaporation c) condensation of water vapour d) freezing
Answer: c) condensation of water vapour - Which one has a fixed shape?
a) water b) vapour c) ice d) steam
Answer: c) ice - Evaporation becomes fast when
a) air is still b) humidity is high c) it is windy d) it is dark
Answer: c) it is windy - Fog is
a) solid b) gas c) tiny water droplets d) snow
Answer: c) tiny water droplets
Section D – Match the Following
| Column I | Column II | Answer |
|---|---|---|
| 1. Rain | a) Solid water | 1 – c (Water droplets falling) |
| 2. Ice | b) Tiny droplets in air | 2 – a |
| 3. Steam | c) Water droplets falling | 3 – d (Gas form of water) |
| 4. Fog | d) Gas form of water | 4 – b |
| 5. Water vapour | e) Invisible gas | 5 – e |
Section E – Short Answer
Question: Why do we see droplets on mirrors after a bath?
Answer: Hot steam touches the cool mirror surface and condenses into water droplets.
Section F – Long Answer
Question: Describe the formation of clouds and rainfall.
Answer:
Water evaporates, becomes vapour, rises, cools and condenses into droplets forming clouds. When droplets become heavy, they fall as rain.