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| Key of School Solutions |
SEBA Class 10 Elective Geography | Unit 1: Physical Geography
Here you will get Class 10 Geography Chapter 1 Questions and Answers (Q. No 9–16) of SEBA Elective Geography in English Medium. These answers will help students prepare for exams and understand key geographical concepts easily.
Q9. What is abrasion? What are the features formed due to abrasion?
Answer: The desert winds may sometimes be very forceful. When such forceful winds blow, the sharp-edged sands and dust particles carried by them may erode the rock surfaces found in the way by sheer friction. This is known as abrasion. As a result, features like inselberg, yardang, and other erosional landforms are formed in deserts.
Q10. Define attrition.
Answer: Attrition is a process of wind erosion where sand and rock particles break into smaller pieces through their mutual collision while being carried by strong winds in deserts.
Q11. What are glaciers? What is the reason for their slow movement?
Answer: Glaciers are large masses of ice and snow that move slowly down a mountain valley due to gravity. Their slow movement is because of their vast size, slope, and temperature conditions. Smaller glaciers move faster, while larger ones move very slowly.
Read also:
Class 10th Geography Unit 1 Physical Geography Ans Solutions (Q. No 1- 8 Ans)
Q12. What are the different types of glaciers? Write briefly about each.
Answer: Glaciers are mainly classified into three types:
- Continental Glaciers: Found in polar regions like Greenland and Antarctica. They are large and move very slowly.
- Mountain Glaciers: Found in mountain ranges such as the Himalayas and the Alps. These move faster than continental glaciers.
- Piedmont Glaciers: Formed when several mountain glaciers join at the foothills. Common in Alaska.
Q13. Draw a figure to show the shape of a glacier valley.
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| glacier valley |
Q14. What is a hanging valley?
Answer: A hanging valley is an erosional feature formed by glaciers. Smaller tributary glaciers form narrow valleys that appear to hang over the main glacier valley. When water falls from a hanging valley to the main valley, it forms a waterfall.
Q15. What are moraines? What are their different types?
Answer: Moraines are long ridges of glacial deposits such as rock, clay, and sand carried by a glacier. The four main types are:
- Lateral Moraine: Found along the sides of glaciers.
- Ground Moraine: Found at the base of glaciers as a result of sediment deposition.
- Medial Moraine: Formed when two glaciers meet, combining their lateral moraines in the center.
- Terminal Moraine: Found at the glacier’s end, marking its melting point.
Q16. How may global warming affect glaciers?
Answer: Global warming increases the Earth’s temperature due to greenhouse gases. This causes glaciers to melt rapidly, raising sea levels and disturbing ecosystems. It can also reduce freshwater sources and cause severe climatic changes in the future.
📘 Download: Class 10 Geography Chapter 1 Question Answer PDF (Q9–16)
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