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 Full solved chapter Rocks and minerals Define  Magma- rocks are formed by the cooling and depositing of molten rock material called magma. Metallic minerals- some minerals found in the rock contain metals and are called metallic minerals. Ore- The metallic minerals from which metal can be profitably extracted are called ores Word      meaning Mantle   अच्छादान Molten    पिघला हुआ Sedimentary अवसादी Metamorphic  रूपांतरित Obsidian     लावा काँच Pumice   कुहरन पत्थर Igneous   आग्नेय Conglomerate समूह Limestone  चूना पत्थर Gneiss  शैल Fossil fuels जीवाश्म इंधन Ore   अयस्क One word Ques-1 How many layers of Earth? Ans- Three. Ques-2 ___ is molten rock material. Ans- Magma. Ques-3 What is the other name of igneous rock. Ans- Fire rock. Ques-4 ____ is known as basalt rock. Ans- Scoria rock. Ques-5 Shale rock is used to make____ and ___. Ans- Bricks, tiles. Ques-6 Quartzite is the type of ______ rock. Ans- Metamorphic  Ques-7 Give one example of non- Metallic minerals. Ans- Coal. Ques-8 W

      Our Skeleton with pdf Ques /ans-       One word ques Ques-1 . How many bones are there in an adult body? Ans- 206 bones. Ques-2. How many pairs of ribs are present in the rib cage? Ans- 12 pairs. Ques-3. which of the system in the human body gives shape and support to the body? Ans- skeleton Ques-4. ___ joints are found in the skull and pelvis. Ans - immovable. Ques-5. Write the other name of involuntary muscles. Ans- smooth muscles. Ques-6 . _____ gridle consists of a shoulder blade and a collar bone. Ans - Pectroral. Ques-7 . Name the fatty substances that forms blood in our Skeleton. Ans- . Bone marrow.                              Very short Q/A Ques-1. How many bones are present in our facial region. Ans- There are 14 bones present in our facial reason. Ques-2. Which muscles are found in the walls of our heart? Ans- cardiac muscles are found in the wall of our heart. Ques-3 . Which of the girdles are attached to the  hind limbs? Ans- pelvic griddles are attached to

Soil and conservation Solved chapter One word Ques-1 The uppermost layer of soil is called____. Ans- Topsoil Ques-2 ____is non- porous layer of soil? Ans- Bedrock. Ques-3 Growing trees on a large number is called ___. Ans- Afforestation. Ques-4. Which of the river is known as 'Sorrow of China'? Ans- Yellow river. Ques-5 Which of the layer is rich in minerals?  Ans- Subsoil.   Very short Ques-1 Name the three layers of soil  Ans- Topsoil, subsoil, bedrock  Ques-2 What is weathering? Ans- The process of formation of soil is called weathering. Ques-3. What is deforestation? Ans- cutting of forest is known as deforestation. Ques-4. What is terrace farming? Ans- farming is done by cutting the slopes into steps or terrace is called terrace farming. Ques-5. What is soil erosion? Ans- The carrying away of soil by the action of wind and water is known as soil erosion. Short Ques- 1. How does human activities responsible for soil erosion? Ans- human beings are responsible for soil erosio