📘 Chapter 7 – Heat Transfer in Nature

🔹 Part 4: Water Cycle & Seepage of Water (Q76–Q100)

Q76. The water cycle is mainly driven by:

A) Winds
B) Sun’s heat
C) Earth’s rotation
D) Moonlight

✅ Answer: B) Sun’s heat

Explanation: Solar energy causes evaporation → condensation → precipitation → completing the water cycle.

Q77. The process of changing water into vapour is called:

A) Condensation
B) Evaporation
C) Precipitation
D) Seepage

✅ Answer: B) Evaporation

Q78. Clouds are formed due to:

A) Evaporation
B) Condensation of water vapour
C) Seepage of water
D) Radiation

✅ Answer: B) Condensation of water vapour

Q79. Rainfall occurs due to:

A) Condensation of water vapour
B) Radiation from the Sun
C) Seepage into soil
D) Water storage

✅ Answer: A) Condensation of water vapour

Q80. Which process in the water cycle is opposite to evaporation?

A) Seepage
B) Condensation
C) Radiation
D) Percolation

✅ Answer: B) Condensation

Q81. The continuous movement of water on, above, and below the surface of Earth is called:

A) Conduction
B) Convection
C) Water cycle
D) Radiation cycle

✅ Answer: C) Water cycle

Q82. Which step of the water cycle involves heat absorption?

A) Condensation
B) Evaporation
C) Precipitation
D) Seepage

✅ Answer: B) Evaporation

Q83. Which step of the water cycle involves heat release?

A) Evaporation
B) Condensation
C) Absorption
D) Seepage

✅ Answer: B) Condensation

Q84. Seepage refers to:

A) Water moving into soil
B) Water evaporating from soil
C) Water condensing in clouds
D) Water stored in oceans

✅ Answer: A) Water moving into soil

Q85. Which process maintains groundwater levels?

A) Radiation
B) Seepage and percolation
C) Evaporation
D) Condensation

✅ Answer: B) Seepage and percolation

Q86. Infiltration means:

A) Water vapour changing into ice
B) Water entering into the ground
C) Water running off the surface
D) Heat transfer in solids

✅ Answer: B) Water entering into the ground

Q87. Which of the following helps recharge groundwater?

A) Runoff only
B) Seepage into soil
C) Evaporation
D) Condensation

✅ Answer: B) Seepage into soil

Q88. Why is the water cycle important?

A) Maintains balance of water
B) Provides fresh water
C) Connects atmosphere, land, and oceans
D) All of these

✅ Answer: D) All of these

Q89. Which form of heat transfer mainly drives evaporation?

A) Conduction
B) Convection
C) Radiation from the Sun
D) Reflection

✅ Answer: C) Radiation from the Sun

Q90. Groundwater collected from seepage is stored in:

A) Clouds
B) Aquifers
C) Rivers only
D) Air

✅ Answer: B) Aquifers

Q91. The downward movement of water through soil is called:

A) Seepage/percolation
B) Evaporation
C) Condensation
D) Sublimation

✅ Answer: A) Seepage/percolation

Q92. Plants contribute to the water cycle through:

A) Evaporation
B) Transpiration
C) Seepage
D) Condensation

✅ Answer: B) Transpiration

Q93. Which process combines with evaporation to return water to the atmosphere?

A) Condensation
B) Seepage
C) Transpiration
D) Precipitation

✅ Answer: C) Transpiration

Q94. Precipitation may occur in the form of:

A) Rain
B) Snow
C) Hail
D) All of these

✅ Answer: D) All of these

Q95. Which factor increases evaporation rate?

A) Low temperature
B) High humidity
C) Strong sunlight and wind
D) Lack of air movement

✅ Answer: C) Strong sunlight and wind

Q96. Water in soil that seeps downward is called:

A) Surface runoff
B) Groundwater
C) Rainwater
D) Vapour

✅ Answer: B) Groundwater

Q97. Which step of the water cycle is directly linked to cloud formation?

A) Condensation
B) Seepage
C) Radiation
D) Infiltration

✅ Answer: A) Condensation

Q98. Why do puddles dry up on a sunny day?

A) Condensation
B) Seepage
C) Evaporation due to solar radiation
D) Percolation

✅ Answer: C) Evaporation due to solar radiation

Q99. Water moving from higher ground to rivers and lakes is called:

A) Condensation
B) Runoff
C) Seepage
D) Percolation

✅ Answer: B) Runoff

Q100. Which process completes the water cycle by bringing water back to Earth’s surface?

A) Evaporation
B) Condensation
C) Precipitation
D) Seepage

✅ Answer: C) Precipitation

Class 7 Science MCQs, CBSE Science Board Exams, NCERT Science Practice, Heat Transfer in Nature, Online Learning Science, CBSE Class 7 Science Chapter 7 MCQs, NCERT Class 7 Science heat transfer questions, Conduction convection radiation Class 7 MCQs, Water cycle and seepage Class 7 Science MCQs, Online learning Class 7 Science exam practice