7th Class

Question: Why does heated air rise up? Answer: The air get heated the molecules expand and get away from each other and the air becomes less dense. Question: What causes lightning during a thunderstorm? Answer: The water droplets and ice crystals collide with each other due to the swift rising air. These …

Question: What is an electric circuit? Answer: An electric Circuit is a continuous conducting path for electric current. Question: What is the relationship between potential difference and direction of flow of current in an electric circuit? Answer: If current flows from point A to point B in a wire, we …

NCERT 7th Class (CBSE) Science: Weather, Climate and Adaptations of Animals to Climate Question: What does a meteorologist do? Answer: A meteorologist is a person who prepares the weather report by collecting information on temperature, wind, humidity, rainfall etc. and predicts the weather conditions of a particular place. Question: What …

NCERT 7th Class (CBSE) Social Science: The Hydrosphere – Quiz 37 Multiple Choice Questions related to The Hydrosphere – Quiz: Ocean water is warmer near the equatorial region and the temperature decreases towards the polar regions. The average salinity of ocean water is 35 per thousand. The movement of ocean water takes …

Question: Describe the general distribution of salinity in oceans. Answer: The distribution of salinity in oceans is as follows: Ocean water is saline due to the presence of a large amount of dissolved salts, mostly sodium chloride or common salt. The amount of salinity varies from one part of the …

NCERT 7th Class (CBSE) Social Science: The Changing Face of the Earth – Quiz 21 Multiple Choice Questions related to The Changing Face of the Earth – Quiz: Alfred Wegener propounded the Theory of Continental Drift. The forces which originate from within the earth are called endogenic forces. The forces which …

Question: Define “Lithospheric Plates”. Answer: According to the theory, the lithosphere is broken up into number of pieces called tectonic or lithospheric plates. It consists of crust and outer parts of upper mantle. There are six major and 20 minor plates, all of which floats independently. Question: Distinguish between endogenetic and …

NCERT 7th Class (CBSE) Social Science: The Interior of the Earth – Quiz 29 Multiple Choice Questions related to The Interior of the Earth – Quiz: The earth is divided into three concentric layers – Crust, mantle and core. The crust is the solid outermost layer of the earth. Rocks are …

Question: Distinguish between rocks and minerals. Answer: Difference is as follows: Question: Distinguish between intrusive and extrusive rocks. Answer: Difference is as follows: Question: Name the main types of rocks with three examples of each. Answer: There are three types of rocks: Igneous rocks: Granite, Dolerite, Basalt. Metamorphic rocks: Marble, Slate, Quartzite. Sedimentary rocks: Sandstone, …

NCERT 7th Class (CBSE) Social Science: The Great Mughals – Quiz 21 Multiple Choice Questions related to The Great Mughals – Quiz: Babur laid the foundation of the Mughal Empire in India. He defeated Ibrahim Lodi, Rana Sanga and Afghan Chiefs. Humayun succeeded Babur in 1530. His main rival was Sher …