The Water Cycle — Homi Bhabha Class 6 Chemistry MCQs with Solutions
Free Homi Bhabha Class 6 Chemistry The Water Cycle MCQs with step-by-step solutions (10 questions). Part of Water & Its Management. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — The Water Cycle · easy · theory
The changing of water into water vapour by the Sun’s heat is called …
A. Filtration
B. Condensation
C. Freezing
D. Evaporation ✓ Correct
Solution: When the Sun heats water in ponds, rivers and seas, the water slowly turns into an invisible gas called water vapour. This change is called evaporation.
Q2 — The Water Cycle · easy · theory
High in the sky, water vapour cools and forms tiny water droplets that make …
A. Wind
B. Clouds ✓ Correct
C. Soil
D. Rocks
Solution: As water vapour rises and cools, it turns into tiny droplets that gather together to form clouds.
Q3 — The Water Cycle · easy · theory
The falling of water from clouds as rain, snow or hail is called …
A. Melting
B. Boiling
C. Evaporation
D. Precipitation ✓ Correct
Solution: When the droplets in a cloud grow big and heavy, they fall to the ground as rain, snow or hail. This falling is called precipitation.
Q4 — The Water Cycle · easy · theory
Which of these gives the energy that keeps the water cycle going?
A. Light from the Moon
B. Sound from thunder
C. Cold from ice
D. Heat from the Sun ✓ Correct
Solution: The Sun’s heat evaporates water and starts the whole cycle, so the Sun is the main source of energy for the water cycle.
Q5 — The Water Cycle · medium · theory
The process in which water vapour changes back into liquid water is called …
A. Evaporation
B. Transpiration
C. Condensation ✓ Correct
D. Precipitation
Solution: When water vapour cools down, it turns back into liquid water droplets. This change from gas to liquid is called condensation.
Q6 — The Water Cycle · medium · theory
Water given out into the air from the leaves of plants is called …
A. Germination
B. Filtration
C. Transpiration ✓ Correct
D. Respiration
Solution: Plants take up water from the soil and release some of it as vapour through their leaves. This is called transpiration and it adds water vapour to the air.
Q7 — The Water Cycle · medium · theory
Which is the correct order of steps in the water cycle?
A. Evaporation → Condensation → Precipitation → Collection ✓ Correct
B. Precipitation → Collection → Condensation → Evaporation
C. Condensation → Evaporation → Collection → Precipitation
D. Collection → Precipitation → Evaporation → Condensation
Solution: First water evaporates, then the vapour condenses into clouds, then it falls as precipitation, and finally the water collects in seas and rivers to begin again.
Q8 — The Water Cycle · medium · numerical
The Sun evaporates about 6 litres of water from a small pond each day. How much water evaporates in 5 days?
A. 25 litres
B. 36 litres
C. 11 litres
D. 30 litres ✓ Correct
Solution: Multiply the daily amount by the number of days: 6 × 5 = 30 litres.
Q9 — The Water Cycle · hard · theory
Why does the water on Earth almost never run out even though we keep using it?
A. New water is made in the clouds every day
B. Water is brought from the Sun as rain
C. The same water is used again and again through the water cycle ✓ Correct
D. Plants make fresh water from soil
Solution: Water is not created or destroyed in the cycle. The same water keeps moving between the ground, the air and the clouds, so it is used over and over again.
Q10 — The Water Cycle · hard · theory
Sea water is salty, yet rainwater is not salty. Why?
A. The Sun turns the salt into water
B. The clouds add sugar to the water
C. Rain washes the salt away in the sky
D. When sea water evaporates, the salt is left behind and only pure vapour rises ✓ Correct
Solution: Only the water turns into vapour during evaporation; the salt stays behind in the sea. So the vapour, and the rain formed from it, is fresh and not salty.