Grade -7 Podar International School,Gandhinagar

PODAR INTERNATIONAL SCHOOL Practice Sheet – 2 (2017-18) Grade: VII Subject: Science Answer Scheme Duration: 1 ½ hours 1 mark questions 1. Define the term wind current. ans: Wind current is the movement of air from one place to another. (Ch 10: Forces of Nature, pg 114) 2. Explain the term polyatomic molecules. ans: Molecules containing more than two atoms of an element is known as a polyatomic molecule. (Ch 6: Inside matter, pg 67) 2 mark questions 3. Explain the role of small intestine and large intestine in the process of digestion in human beings. ans:  The main function of small intestine is of mixing and digesting the chyme from the stomach, production of enzymes necessary for digestion of food and absorption of nutrients.  The main function of large intestine is to absorb excess water and necessary salts from the contents received after digestion in small intestine. (Ch 3: How Animals get energy, pg 29) 4. Classify the following examples into the giv