Class 7 | Science | Chapter 13 | Motion and Time | NCERT Solutions Question 1. Classify the following as motion along a straight line, circular or oscillatory motion: (i) Motion of your hands while running. (ii) Motion of a horse pulling a cart on a straight road. (iii) Motion of a child in a merry-go-round. (iv) Motion of a child on a see-saw. (v) Motion of the hammer … [Read more...] about Chapter 13 Motion and Time
NCERT Solutions
Chapter 15 Improvement in Food Resources
Class 9 Science Chapter 15 Improvement in Food Resources NCERT Solutions Page 204 Question 1. What do we get from cereals, pulses, fruits and vegetables? Answer Cereals give us carbohydrates. Pulses gives us proteins. Fruits and vegetables gives us vitamins. Page 205 Question 1. How do biotic and abiotic factors affect crop production? Answer Biotic … [Read more...] about Chapter 15 Improvement in Food Resources
Chapter 16 Sustainable Management of Resources
Page 271 Question 1. What changes can you make in your habits to become more environment friendly? Answer 1 (i) By minimising the water usage and avoiding its wastage. (ii) Saving power by switching off unnecessary lights and fans. (iii) Avoiding wastage of food by consuming it rationally as per our needs. (iv) Walking down or use bi-cycle for going to nearby … [Read more...] about Chapter 16 Sustainable Management of Resources
Chapter 15 Our Environment
Page 260 Question 1. What are trophic levels? Give an example of a food chain and state the different trophic levels in it. Answer 1 Trophic levels in a food chain represent various steps where transfer of food energy takes place. Example: A simple food chain found in a grassland is given below: Grass → Insects → Frogs → Snakes (i) Grass → I trophic level … [Read more...] about Chapter 15 Our Environment
Chapter 14 Sources of Energy
Page 243 Question 1. What is a good source of energy? Answer 1 A good source of energy should have the following qualities: (i) It should be easily available. (ii) It does not produce pollution. (iii) It should be renewable and environment friendly. (iv) It should produce large amount of heat per unit volume/mass. (v) It should be easy to store and … [Read more...] about Chapter 14 Sources of Energy