Class-7 Our Changing Earth

 

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#1. The molten magma inside the earth moves in a ____ manner.

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#2. The forces which act in the interior of the earth are called as ____ forces.

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#3. The forces that work on the surface of the earth are called as ____ forces.

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#4. Sudden movement produced by Endogenic forces cause …….

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#5. A ____ is a vent in the earth’s crust through which molten material erupts suddenly.

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#6. When the Lithospheric plates move, the surface of the earth vibrates. These vibrations are called ____

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#7. The place in the crust where the movement starts is called the ____.

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#8. The place on the surface above the focus is called the ____.

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#9. An earthquake is measured with a machine called a ___.

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#10. The magnitude of the earthquake is measured on the ____ scale

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#11. An earthquake of less than ___can be felt only a little.

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#12. An earthquake over ___ can cause damage from things falling.

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#13. An earthquake of ____ or higher magnitude is considered very strong

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#14. An earthquake of _____ is classified as a major earthquake

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#15. The landscape is being continuously worn away. ____ is the process of breaking up of the rocks on the earth’s surface.

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#16. ____ is the wearing away of the landscape by different agents like water, wind and ice.

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#17. When the river tumbles at steep angle over very hard rocks or down a steep valley side it forms a ___.

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#18. ____ fall is the highest waterfall in the world.

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#19. As the river enters the plain it twists and turns forming large bends known as _____.

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#20. Meander loop cuts off from the river and forms a ____

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#21. Flooding of the river in the neighbouring areas deposits layers of fine soil and other material called ___.

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#22. Due to the river overflows deposits layers of fine soil and other material leads to the formation of a flat fertile ___.

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#23. The raised banks of the river are called ____.

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#24. As the river approaches the sea, the speed of the flowing water ____.

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#25. As the river approaches the sea, the river begins to break up into a number of streams called ____.

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#26. As the river approaches the sea, it begins to deposit its load. The collection of sediments from all the mouths forms a ____.

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#27. The ___ and deposition of the sea waves gives rise to coastal landforms.

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#28. Hollow like caves formed by Seawaves on the rocks are called __caves.

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#29. Seawaves creates cavities on rock. when it become bigger and bigger only the roof of the caves remain, this is called ____.

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#30. Further erosion of rocks by seawaves breaks the roof and only walls are left. These wall like features are called ____.

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#31. The steep rocky coast rising almost vertically above sea water is called ____.

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#32. The sea waves deposit sediments along the shores forming ____.

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#33. Glaciers are rivers of ____

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#34. The material carried by the glacier such as rocks big and small, sand and silt gets deposited. These deposits form ____.

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#35. A special shape of rock found in deserts are commonly called ____ rocks.

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#36. Very fine and light sand travel very long distances and deposits in large areas, it is called _____.

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