Page 4 - Ripples SCIENCE 7 - TEJPUR Edition 2024 Answer Key
P. 4
CONTENTS
UNIT I: Food and Nutrition
1. Food and its Sources 5
2. Utilisation of Food 16
UNIT II: Materials
3. Fibre and Fabric 27
4. Heat and Temperature 35
5. Acids, Bases and Salts 45
6. Physical and Chemical Changes 56
UNIT III: The World of the Living
7. Soil 64
8. Weather, Climate and Adaptation 73
9. Respiration 83
10. Circulation and Excretion 93
11. Reproduction in Plants 104
12. Motion and Time 113
UNIT IV: How Things Work
13. Electric Current and Its Effects 122
UNIT V: Natural Phenomena
14. Winds, Storms and Cyclones 129
15. Light 137
UNIT VI: Natural Resources
16. Water : A Valuable Resource 145
17. Forests : Our Lifeline 152
18. Wastewater Management 160
