Class 7 Exam > Class 7 Notes > Window on the Word Class 7: Solutions, Notes & Worksheets > Worksheet Solutions: The Changing Face of Earth
Worksheet Solutions: The Changing Face of Earth | Window on the Word Class 7: Solutions, Notes & Worksheets PDF Download
Q1: Multiple Choice Questions
(i) What is not caused by endogenic forces?
(a) An earthquake
(b) A volcanic eruption
(c) Weathering
(d) Tsunami
Ans: (c)
Weathering is caused by exogenic forces.
(ii) Sudden movements inside the Earth cause:
(a) Floodplains
(b) Earthquakes
(c) Folding
(d) Meanders
Ans: (b)
Earthquakes are caused by sudden endogenic movements.
(iii) What is an instrument used to measure the intensity of an earthquake?
(a) Wind
(b) An earthquake
(c) A volcano
(d) A seismograph
Ans: (d)
A seismograph measures earthquake intensity.
(iv) Magma that comes out onto the surface of the Earth is known as:
(a) Lava
(b) Loess
(c) Stacks
(d) Mantle
Ans: (a)
Magma that reaches the surface is called lava.
(v) In the course of a river, ox-bow lakes are formed in its:
(a) Upper course
(b) Middle course
(c) Lower course
(d) Mouth
Ans: (b)
Ox-bow lakes are typically formed in the middle course of a river.
Q2: True or False
(i) Earthquakes and volcanoes are caused by exogenous processes.
Ans: False
(ii) Faults are formed when two tectonic plates push towards each other.
Ans: False
(iii) The point inside the Earth at which the earthquake originates is the epicenter.
Ans: False
(iv) A sand dune is a feature of sea erosion.
Ans: False
(v) U-shaped valleys are created by rivers.
Ans: True
Q3: Match the Column
Ans:
Q4: Fill in the Blanks
(i) __________ forces originate deep below the Earth's surface and result in the formation of landforms like volcanoes and fold mountains.
Ans: Endogenic
(ii) The movement of tectonic plates is powered by heat energy released from deep inside the Earth due to __________.
Ans: convection currents
(iii) When two tectonic plates pull away from each other, __________ appear on the Earth's surface.
Ans: faults
(iv) The instrument used to measure the intensity of an earthquake is called a __________.
Ans: seismograph
(v) Glaciers are slow-moving rivers of__________ formed by the accumulation and compaction of snow.
Ans: ice
The document Worksheet Solutions: The Changing Face of Earth | Window on the Word Class 7: Solutions, Notes & Worksheets is a part of the Class 7 Course Window on the Word Class 7: Solutions, Notes & Worksheets.
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FAQs on Worksheet Solutions: The Changing Face of Earth - Window on the Word Class 7: Solutions, Notes & Worksheets
| 1. What is the meaning of the term "The Changing Face of Earth"? |  |
Ans. The term "The Changing Face of Earth" refers to the various processes and phenomena that occur on Earth's surface, leading to changes in its physical features, such as landforms, climate, and ecosystems.
| 2. What are some examples of the changing face of Earth? | |
Ans. Some examples of the changing face of Earth include volcanic eruptions, erosion, weathering, plate tectonics, and human activities like deforestation and urbanization.
| 3. How do volcanic eruptions contribute to the changing face of Earth? | |
Ans. Volcanic eruptions contribute to the changing face of Earth by releasing lava, ash, and gases, which can create new landforms, such as volcanic islands and mountains. They also deposit layers of volcanic ash, enriching the soil and affecting the local climate.
| 4. What role do human activities play in the changing face of Earth? | |
Ans. Human activities, such as deforestation, mining, and urbanization, significantly contribute to the changing face of Earth. These activities can lead to habitat destruction, soil erosion, air and water pollution, and climate change, altering the Earth's landscape and ecosystems.
| 5. How does plate tectonics contribute to the changing face of Earth? | |
Ans. Plate tectonics, the movement of Earth's lithospheric plates, plays a crucial role in shaping the changing face of Earth. It causes earthquakes, volcanic activity, and the formation of mountains, oceanic trenches, and rift valleys. Plate movements also lead to the formation of new landmasses and the destruction of existing ones through processes like subduction and seafloor spreading.
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Nov 23, 2024 Last updated |
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