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Give a geographical reason:
Slope is a major factor in mass wasting.
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Give a geographical reason:
Oxidation changes the size and colour of the rocks.
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Give a geographical reason:
Effect of mass movement will be greater along the western slope of the Sahyadri's than the eastern slope.
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A region is having an annual mean temperature of 5°C and an annual rainfall of 1000 mm. Can you comment upon the weathering and the type with the help of the following questions? Discuss in class.
- Which type of weathering will be dominant here?
- Where will such a region be found?
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On the basis of the given points, differentiate between weathering and erosion.
| Weathering | Erosion | |
| Definition | ||
| Causes/Agents | ||
| Effect/Results | ||
| Examples |
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Look at the figure and identify the landforms at A, B, C, D, E, F, and G.

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- Have you ever thought why there is a difference in the skin color of various peoples in the world?
- Why all the people in the world do not eat the same food?
- Why there is a variety of clothing patterns and types too? Even our houses are different.
- How come flora and fauna are restricted to a particular region?
- Why different fruits are found in different places?
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Make a list of the human activities you think that are not influenced by climatic elements. Let us see how far you can proceed.
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Write the names of climatic regions according to the factors that dominate their characteristics.
| Latitudinal location | Winds and wind systems | Proximity to sea | a Continental location | Altitude |
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The graph in the figure shows the difference between the global average temperature of the twentieth century and global monthly temperatures from 1985 to 2015. Answer the questions given below:

- In which year is the difference the least?
- What is the difference between the mean temperatures of the twentieth century and temperature in 2015?
- Why do the temperatures differ in different months?
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Look at the following graph. Answer the following question.
- Which of these gases has the highest contribution?
- Which of these gases come from natural and man-made sources?
- Which activities are responsible for their emission?
- Out of these, whose emissions can be controlled by humans?

Global Greenhouse Gas Emissions
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Look at the graph in the figure and answer the following questions:

- What does the graph show?
- In which year is the change around 225 mm?
- What conclusions can you draw by seeing the graph?
- What correlation can be seen between this graph and the graph of rising temperatures?
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Collect information on the following and discuss in the class:
- Major journeys carried out by explorers in the last millennium
- Discovery of continents, countries, and islands
- Spread of culture, trade, and religions
Comment on how oceans have played a major role in all the three points mentioned above.
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Look at the figure and answer the following question.

- What does the figure show?
- In which part of the figure is the ocean shallow? Which human activities can be carried out here?
- In which part does deposition of sediments occur?
- Where in the figure do you find islands formed due to submerged mountains?
- Label the figure with the correct names of landforms.
- Compare these features with the landforms on the earth.
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Find out the name and locations of islands located in India and list them in the above given categories.
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Complete the chain:
| A | B | C |
| 1) Continental Shelf | 1) deeper part | 1) Manganese nodules |
| 2) Oceanic microorganisms | 2) Abyssal plains | 2) Whales |
| 3) Oceanic Trenches | 3) fishing | 3) Sunda |
| 4) Vast Flat Area | 4) plankton | 4) Dogger Bank |
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Show the following on the map of the World:
- Chagos Range
- Mariana Trench
- Dogger Bank
- Mumbai High
- Sunda Deep
- Grand Banks
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Look at the figure and answer the following questions:

- What does this map show?
- Which continents and sub-continents are visible on this map?
- What lies between the continents?
- Chagos Plateau, Sunda Trench, Central Mountain range are a part of what?
- What are the conclusions you can draw after looking at the map?
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See the maps in Figures A and B. They show the pattern of ocean currents in the Indian Ocean during different seasons.
Study the maps carefully and answer the following questions.
- Identify the season each map is representing and name them accordingly.
- What difference do you notice in the direction of currents between winter and summer in the Northern part of the Indian Ocean?
- How many cold currents are there in the Indian Ocean? Name them.
- Why do you think the cold currents are fewer in the Indian Ocean.
- Which currents maintain the direction in both the season?
- Can you see any circulation in the currents of the Indian Ocean? What are such circulations called? If yes name the currents sequentially.
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Complete the chain:
| A | B | C |
| 1) Pacific Ocean | 1) Christmas | 1) Bab-al-Mandeb |
| 2) Chagos | 2) Atlantic Ocean | 2) Lakshadweep |
| 3) Ashmore | 3) Maldives | 3) Indian Ocean |
| 4) Hormuz | 4) Malacca | 4) Cocos |
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