Class 7 Exam > Class 7 Notes > Footprints Class 7: Book Solutions, Notes & Worksheets > Worksheet: The Hydrosphere
Worksheet: The Hydrosphere | Footprints Class 7: Book Solutions, Notes & Worksheets PDF Download
| Table of contents |
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| Multiple Choice Questions (MCQs) |
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| Short Questions |
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| Fill in the Blanks |
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| Match the Column |
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| True False |
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Multiple Choice Questions (MCQs)
Q1: The hydrosphere, along with the atmosphere and lithosphere, makes life possible on Earth. Which of the following statements is true about the hydrosphere?(a) It comprises only oceans.
(b) It includes only groundwater.
(c) It consists of all types of water bodies.
(d) It is not essential for life.
Q2: Which process is responsible for converting water in the oceans into water vapor in the atmosphere?
(a) Precipitation
(b) Evaporation
(c) Condensation
(d) Collection
Q3: What is the average salinity of sea water expressed in parts per thousand?
(a) 25
(b) 35
(c) 45
(d) 55
Q4: Tides are caused due to the gravitational force exerted by which celestial bodies?
(a) Earth and Sun
(b) Earth and Moon
(c) Moon and Sun
(d) Mars and Venus
Q5: Which factor does not influence the movement of ocean currents?
(a) Differences in temperature and density of ocean water
(b) Prevailing winds
(c) Rotation of the Earth
(d) Shape of Landmasses
Short Questions
Q1: Define the hydrosphere and its significance in sustaining life on Earth.
Q2: Explain the process of tidal formation and the factors affecting tidal heights.
Q3: Describe the types and significance of ocean currents.
Q4: Discuss the factors influencing the movement of ocean water.
Q5: Why is water conservation important, and what are some suggested measures to prevent water pollution?
Fill in the Blanks
Q1: Fresh water is suitable for human consumption and comprises only _______ percent of water available on Earth.Q2: The temperature of ocean water varies with latitude, and the warmest oceanic waters are found in _______ latitudes.
Q3: Ocean currents are caused by several factors, including differences in temperature and _______ of ocean water.
Q4: Tides clear mud and silt deposits from the mouth of rivers and keep them open for _______.
Q5: Tidal energy can be generated from ocean water, while hydroelectricity is generated from _______.
Match the Column
Match the following terms with their definitions:
True False
Q1: The hydrosphere comprises only oceans.
Q2: Ocean currents flow in the opposite direction of prevailing winds in the southern hemisphere.
Q3: The Moon exerts a greater gravitational force on water bodies closer to it, causing tides.
Q4: Tidal energy cannot be generated from ocean water.
Q5: The temperature of ocean water increases with depth.
The solutions of the worksheet "The Hydrosphere"
The document Worksheet: The Hydrosphere | Footprints Class 7: Book Solutions, Notes & Worksheets is a part of the Class 7 Course Footprints Class 7: Book Solutions, Notes & Worksheets.
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FAQs on Worksheet: The Hydrosphere - Footprints Class 7: Book Solutions, Notes & Worksheets
| 1. What is the hydrosphere and why is it important? |  |
Ans. The hydrosphere refers to all the water present on Earth, including oceans, rivers, lakes, and groundwater. It is important because it supports life, regulates climate, and is essential for human activities such as agriculture and industry.
| 2. How does the hydrosphere interact with the atmosphere? | |
Ans. The hydrosphere interacts with the atmosphere through processes like evaporation and precipitation. Water evaporates from the surface of oceans and lakes, forming clouds, which eventually result in rain or snow, returning water to the Earth's surface.
| 3. What are the main components of the hydrosphere? | |
Ans. The main components of the hydrosphere include oceans, rivers, lakes, glaciers, and groundwater. Oceans hold the majority of Earth's water, while rivers and lakes are vital for freshwater supply.
| 4. How does human activity impact the hydrosphere? | |
Ans. Human activities such as pollution, deforestation, and urbanization can significantly impact the hydrosphere. Pollution can contaminate water sources, while deforestation can alter water cycles, leading to issues like flooding and drought.
| 5. What is the water cycle, and why is it significant in the hydrosphere? | |
Ans. The water cycle is the continuous movement of water between the Earth's surface and the atmosphere, involving processes like evaporation, condensation, and precipitation. It is significant because it helps maintain the balance of water in the hydrosphere and supports ecosystems.
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