The Natural Realms of the Earth -Lithosphere — Flashcards
Telangana Board · Class 9 · Social Studies
20 flashcards for The Natural Realms of the Earth -Lithosphere (Telangana Board Class 9 Social Studies) to test yourself on key terms and facts.
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What are the four natural realms of the Earth?
Answer
The four natural realms are: 1. Lithosphere (solid crust made of rocks and minerals), 2. Hydrosphere (realm of water including rivers, oceans, groundwater), 3. Atmosphere (thin layer of air containing…
Define Lithosphere and explain its Greek origin
Answer
Lithosphere is the solid crust or hard top part of the Earth made up of rocks and minerals and covered with soil. The term comes from Greek words 'Litho' (meaning stone or rock) and 'sphaira' (meaning…
What are the three orders of landforms? Give examples.
Answer
First Order Landforms: Primary division into continents and oceans. Second Order Landforms: Mountains, plateaus, and plains formed by internal Earth processes. Third Order Landforms: Features carved b…
Name the seven major tectonic plates of the Earth
Answer
The seven major tectonic plates are: 1. African Plate, 2. North American Plate, 3. South American Plate, 4. Indo-Australian Plate, 5. Antarctic Plate, 6. Eurasian Plate, 7. Pacific Plate. There are al…
Explain the process of sea-floor spreading with its stages
Answer
Sea-floor spreading occurs at mid-ocean ridges where new oceanic crust is formed. Stages: 1. Continental cracks due to convection currents, 2. Cracked portion collapses to form rift valley, 3. Oceans …
How were the Himalaya mountains formed according to plate tectonics?
Answer
The Himalayas were formed when the Indian plate pushed into and went under the Eurasian plate. This process is like pushing a cloth sheet on a table - it folds to form mountain-like formations. The co…
What is the Pacific Ring of Fire and why is it significant?
Answer
The Pacific Ring of Fire is the edge of the Pacific Ocean basin where about 3/4 of all active volcanoes in the world are located. It's significant because plate boundaries are found all around the Pac…
Define weathering and explain its types
Answer
Weathering is the gradual disintegration of rocks by atmospheric or weather forces. It occurs through: 1. Temperature changes - rocks expand when heated and contract when cooled, making them brittle, …
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