Class 6th Chapter 8 A Journey Through States of Water

📚 A Journey Through States of Water - Class 6th 💧

Question 1

Which option below best explains the process known as condensation?

Option	Description
(i)	The conversion of water into its vapour state.
(ii)	The process of water changing from a liquid into gaseous state.
(iii)	The formation of clouds from tiny water droplets.
(iv)	The conversion of water vapour into its liquid state.

✅ Answer: (iv) The conversion of water vapour into its liquid state.

Question 2

In which of the following situations is evaporation a very important process?

(i) Colouring with:

Option	Material
(a)	Crayons
(b)	Water colours
(c)	Acrylic colours
(d)	Pencil colours

(ii) Writing on paper with:

Option	Writing Tool
(a)	Pencil
(b)	Ink pen
(c)	Ballpoint pen

✅ Answers: (b) Water colours and (b) Ink pen

Question 3

Why does natural grass feel cooler than plastic grass in the same area?

✅ Answer: Natural grass allows water to evaporate, which cools the air around it. Plastic grass doesn't absorb or release moisture, so the surrounding area feels hotter than with real grass.

Question 4

Name some liquids other than water that easily evaporate in the air.

Liquid	Common Use
Perfume	Fragrance
Alcohol	Sanitizer/Medicine
Petrol	Vehicle fuel
Nail Polish Remover	Cosmetic remover
Kerosene	Fuel/Solvent

✅ Answer: Liquids like perfume, alcohol, petrol, nail polish remover and kerosene evaporate quickly when exposed to air. These liquids change into vapour without heating due to their low boiling points.

Question 5

Why does a fan help to dry wet clothes even without being warm?

✅ Answer: A fan increases air movement, which helps water molecules to evaporate faster. Even without heat, air moving over wet clothes carries moisture away, making them dry more quickly.

Question 6

Why is sludge kept near drains before being moved to other places?

✅ Answer: Leaving sludge near drains for a few days helps water to evaporate. This makes the sludge lighter, easier to handle, and safer to transport to gardens or fields as manure.

Question 7

Which household activities show evaporation and how is evaporation useful in daily life?

Household Activity	How Evaporation Helps
Drying clothes	Removes moisture from fabric
Boiling water	Purification and cooking
Sweating	Body temperature regulation
Drying floors	Maintains cleanliness and safety

✅ Answer: Drying clothes, boiling water, sweating, and drying floors show evaporation. It helps remove moisture, keeps things dry and cool, and plays an important role in maintaining cleanliness and comfort at home.

Question 8

In which solid forms is water naturally found in our environment?

Solid Form	Where Found
Snow	Mountains, cold regions
Hail	During thunderstorms
Frost	Early morning surfaces
Ice	Glaciers, frozen water bodies

✅ Answer: Water is found in solid form as snow, hail, frost, and ice in mountains, glaciers, and cold regions. These forms melt back into liquid water when the temperature increases.

Question 9

"Water is our responsibility before it is our right." What does it mean?

✅ Answer: It means we must use water wisely and not waste or pollute it. Only when we take care of it responsibly can we truly deserve the right to clean and safe water.

Question 10

How can you quickly cool a two-wheeler seat that is very hot?

✅ Answer: To cool a hot seat, cover it with a wet cloth or sprinkle some water. Evaporation from the surface helps to reduce the temperature quickly, making the seat comfortable to sit.