Chapter 7 “Work, Energy and Simple Machines” explains the concepts of work, energy and power. It describes different forms of energy and simple machines, helping me understand how machines make work easier in daily life.
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Chapter 6 “How Forces Affect Motion” explains how different forces change the motion of objects. It covers balanced and unbalanced forces, acceleration, friction and Newton’s laws, helping me understand movement and effects of force in daily life.
Pruning stimulates meristematic growth and branching. Grafting joins conducting tissues for nutrient transport. Irrigation maintains healthy tissues through water supply. Crop rotation improves soil nutrients, supporting growth, conducting and supporting tissues, while reducing disease and improving plant health.
Practices like yoga and kabaddi strengthen muscles, improve flexibility and maintain bone health. Regular physical activity improves posture, coordination and balance, increases blood circulation and reduces the risk of obesity, stiffness, weak bones and muscle injuries.
Ligament rupture causes joint instability, cartilage rupture damages cushioning and bone fracture breaks bones. Risks can be reduced through exercise, yoga, balanced diet rich in calcium and vitamin D, maintaining posture and avoiding unsafe movements or accidents.