Class 4 Exam > Class 4 Notes > Science Olympiad Class 4 > Visual Worksheet: Water Cycle
Visual Worksheet: Water Cycle | Science Olympiad Class 4 PDF Download
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FAQs on Visual Worksheet: Water Cycle - Science Olympiad Class 4
| 1. What are the main processes involved in the water cycle? |  |
Ans. The main processes involved in the water cycle include evaporation, condensation, precipitation, infiltration, and runoff. Evaporation occurs when water from oceans, rivers, and lakes turns into vapor. Condensation happens when water vapor cools and forms clouds. Precipitation is when water falls back to the earth in the form of rain, snow, sleet, or hail. Infiltration is the process of water soaking into the ground, while runoff refers to water that flows over the land surface back to bodies of water.
| 2. How does evaporation contribute to the water cycle? | |
Ans. Evaporation is a crucial part of the water cycle as it is the process that transforms liquid water into water vapor, allowing it to rise into the atmosphere. This process is driven by heat from the sun, and it plays a vital role in regulating temperature and maintaining the balance of water on Earth. Without evaporation, the cycle would not be able to continue as water would not be able to move from the Earth's surface to the atmosphere.
| 3. What role do plants play in the water cycle? | |
Ans. Plants play a significant role in the water cycle through a process called transpiration. During transpiration, plants absorb water from the soil and release water vapor into the atmosphere through their leaves. This process helps to increase humidity in the air and contributes to cloud formation. Additionally, plants help to regulate the water cycle by preventing soil erosion and maintaining groundwater levels.
| 4. What is the importance of the water cycle for the environment? | |
Ans. The water cycle is essential for the environment as it distributes water across the planet, supporting all forms of life. It helps to regulate temperature, influences weather patterns, and maintains ecosystems. The cycle also ensures the availability of fresh water for drinking, agriculture, and industry. Without a functioning water cycle, many ecosystems would collapse, and life as we know it would be severely impacted.
| 5. How does human activity affect the water cycle? | |
Ans. Human activities, such as deforestation, urbanization, and pollution, can significantly affect the water cycle. Deforestation reduces the number of trees available for transpiration, leading to decreased humidity and altered precipitation patterns. Urbanization increases impervious surfaces, causing more runoff and reducing groundwater recharge. Pollution can contaminate water sources, affecting the quality of water in the cycle and harming ecosystems. It's essential to consider these impacts to manage and protect our water resources effectively.
About this Document
Sep 02, 2025
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Document Description: Visual Worksheet: Water Cycle for Class 4 2025 is part of Science Olympiad Class 4 preparation.
The notes and questions for Visual Worksheet: Water Cycle have been prepared according to the Class 4 exam syllabus. Information about Visual Worksheet: Water Cycle covers topics
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