Glaciers are found on every continent except Australia and some are hundreds of thousands of years old. NCERT Solutions for Class 7 Geography Chapter 3 - Our Changing Earth are provided here. Glacier ice is highly pressurized. Write whether the given statements are true or false: 1. Deposition is breaking up of rocks on the earth’s surface. True; The Rope Bridge is in Arunachal Pradesh. Bubbles in glacier ice get squeezed and pushed around. A rich variety of flora and fauna is found in the mountains. Continental Glaciers The Antarctic ice sheet is the largest block of ice on Earth. Sudden movements like earthquake do not cause mass destruction. Two valley glaciers flow around a small horn and merge together to form a larger valley glacier. False; As we go higher, the climate becomes hotter. It is more than 400 kilometers (249 miles) long and 2,500 meters (1.5 miles) thick. Download the best answers for easy and quick preparations for the exams. Once upon a time, the larger valley glacier flowed down the whole length of the valley, carving out a U-shaped valley. A glacier is a huge mass of ice that moves slowly over land. 5. flood plains 6. loess, Question 2. True; Plateaus are vast stretches of flat land. The Lambert Glacier moves as quickly as 1,200 meters (.7 mile) every year. Wearing away of the land by different agents like water, wind and ice is called erosion. The glacier is in retreat because only a portion of the glacially carved, U-shaped valley contains ice. Plains are lower than the land in their surrounding and can be found both inland and along the coast. 4. “An ancient frozen body has to be one of the most valuable things on Earth,” said Johan Reinhard, an archaeologist working then with National Geographic. Glaciation was much more extensive in the past, when much of the world was covered in large, continental ice sheets. True / False: Major Landforms of the Earth Question: State whether these sentences are true (T) or false (F). Plains are very useful because they are rich in mineral deposits. He found the Inca Ice Maiden in the Andes in 1995. ( Wikimedia Commons ) In 2005, the online magazine Geotimes reported on the phenomenon. 3. Flood plains are formed by the deposition of fine soil and other material called sediments on the river banks. The largest glacier in the world is an ice stream, the Lambert Glacier in Antarctica. A rich variety of flora and fauna is found in the mountains. Glaciation is the formation, movement and recession of glaciers. As the soil and sediments are brought by flood water, they are very fertile. Currently, glaciers cover about 10 per cent of the world's land area (14.9 million km2). This kind is usually found near ablation areas of a glacier. Coarse-bubbly ice looks whiter than most other ice because it is filled with small bubbles. Plains; Plains are broad flat areas on the earth’s surface stretching over a wide area. The Rope Bridge is in Arunachal Pradesh. False; Mt. Glaciers exist in both the United States and Canada. False; Plains are very useful because they are rich in mineral deposits. The term “glacier” comes from the French word glace (glah-SAY), which means ice.Glaciers are often called “rivers of ice.” Glaciers fall into two groups: alpine glaciers and ice sheets. 2. Coastal plains rise from the seal level up to the point they meet raised landforms such as plateaus or mountains. Sometimes you can see round bubbles that have been squeezed into long rods or flat plains. Nigardsbrevatnet Glacier, in the Sognefjord, Norway. Plateaus are vast stretches of flat land. Most U.S. glaciers are in Alaska; others can be found in Washington, Oregon, California, Montana, Wyoming, Colorado, and Nevada (Wheeler Peak Glacier in Great Basin National Park). A large cluster of glaciers are in the …