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(B) Solar radiation Explanation: Solar radiation from the Sun is the primary source of energy that drives the water cycle. It heats the Earth's surface, causing water to evaporate from oceans, lakes, and other water bodies, initiating the water cycle.

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(A) Condensation Explanation: Condensation is the process in which water vapor in the atmosphere cools and changes back into liquid water droplets. This process is responsible for cloud formation.

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(D) Fog Explanation: Fog is not a form of precipitation. Precipitation includes rain, snow, sleet, and hail, which are all forms of water falling from the atmosphere to the Earth's surface.

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(C) Transpiration Explanation: Transpiration is the process by which plants absorb water from the soil through their roots and release it into the atmosphere through small openings called stomata in their leaves.

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(D) All of the above Explanation: Oceans, lakes, and rivers are all natural reservoirs of water in the Earth's water cycle. These bodies of water store and release water through various processes in the cycle.

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(B) Infiltration Explanation: Infiltration is the process by which water from rainfall or surface water sources penetrates the soil and enters underground aquifers, becoming groundwater.

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(B) Percolation Explanation: Percolation refers to the movement of water through the pores and spaces in soil and rock beneath the Earth's surface. It is an important part of groundwater recharge.

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(A) Building dams Explanation: Building dams can disrupt the natural flow of rivers and water bodies, altering the water cycle. Dams can affect downstream water availability and ecosystems.

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(B) Condensation Explanation: Condensation is the phase change from water vapor to liquid water. It occurs when water vapor cools and forms tiny water droplets or ice crystals.

Question 1

Answer

Accepted Answer

(B) Solar radiation
Explanation: Solar radiation from the Sun is the primary source of energy that drives the water cycle. It heats the Earth's surface, causing water to evaporate from oceans, lakes, and other water bodies, initiating the water cycle.

Question 2

Answer

Accepted Answer

(A) Condensation
Explanation: Condensation is the process in which water vapor in the atmosphere cools and changes back into liquid water droplets. This process is responsible for cloud formation.

Question 3

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Accepted Answer

(D) Fog
Explanation: Fog is not a form of precipitation. Precipitation includes rain, snow, sleet, and hail, which are all forms of water falling from the atmosphere to the Earth's surface.

Question 4

Answer

Accepted Answer

(C) Transpiration
Explanation: Transpiration is the process by which plants absorb water from the soil through their roots and release it into the atmosphere through small openings called stomata in their leaves.

Question 5

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Accepted Answer

(D) All of the above
Explanation: Oceans, lakes, and rivers are all natural reservoirs of water in the Earth's water cycle. These bodies of water store and release water through various processes in the cycle.

Question 6

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Accepted Answer

(B) Infiltration
Explanation: Infiltration is the process by which water from rainfall or surface water sources penetrates the soil and enters underground aquifers, becoming groundwater.

Question 7

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Accepted Answer

(B) Percolation
Explanation: Percolation refers to the movement of water through the pores and spaces in soil and rock beneath the Earth's surface. It is an important part of groundwater recharge.

Question 8

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Accepted Answer

(A) Building dams
Explanation: Building dams can disrupt the natural flow of rivers and water bodies, altering the water cycle. Dams can affect downstream water availability and ecosystems.

Question 9

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Accepted Answer

(B) Condensation
Explanation: Condensation is the phase change from water vapor to liquid water. It occurs when water vapor cools and forms tiny water droplets or ice crystals.

Question 10

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Accepted Answer

(B) It helps regulate temperature and distribute heat around the planet.
Explanation: The water cycle helps regulate Earth's temperature by transporting heat from the surface to the atmosphere and distributing it globally. Evaporation and condensation processes are key in this heat transfer, which impacts climate patterns.

Question 11

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Accepted Answer

(C) Transpiration
Explanation: Transpiration is the process by which plants absorb water from the soil through their roots and release it into the atmosphere through tiny openings in their leaves called stomata. It is a key component of the water cycle as it contributes to the moisture in the air.

Question 12

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Accepted Answer

(D) Atmospheric pressure
Explanation: Atmospheric pressure is not a factor that directly influences the rate of evaporation. The factors that do influence evaporation include temperature, humidity, wind speed, and surface area.

Question 13

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(B) Humidity
Explanation: Humidity is a measure of the amount of water vapor present in the air. It is an important parameter in weather and the water cycle.

Question 14

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(B) Sublimation
Explanation: Sublimation is the process by which ice (solid water) transitions directly into water vapor (gas) without going through the liquid phase. This can occur at cold temperatures and low atmospheric pressures.

Question 15

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(C) Runoff
Explanation: Runoff is the process by which water, often from rainfall, flows over the surface of the Earth and eventually enters streams, rivers, lakes, and oceans. It can carry pollutants and sediment with it.

Question 16

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Accepted Answer

(D) Coalescence
Explanation: Coalescence is the process by which smaller water droplets in clouds collide, merge, and grow larger. When these droplets become too heavy, they fall as precipitation.

Question 17

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(A) Dew
Explanation: Dew is not considered a form of precipitation. It occurs when moisture in the air condenses onto cool surfaces, such as grass or car windshields, as water droplets.

Question 18

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(B) Discharge
Explanation: Discharge refers to the movement of groundwater to the surface, often through natural springs, where it flows into surface water bodies like rivers or lakes.

Question 19

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(C) Water conservation practices
Explanation: Water conservation practices, such as reducing water wastage, reusing water, and managing water resources sustainably, can have a positive impact on the water cycle by ensuring the availability of clean water for various uses.

Question 20

Answer

Accepted Answer

(C) Transpiration
Explanation: Transpiration is the process by which water is absorbed by plant roots from the soil, transported through the plant, and eventually released into the atmosphere through tiny openings in leaves, contributing to atmospheric moisture.

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