Title: Science Textbook for Class VII, Semester 2.
Introduction: This volume continues the Class VII curriculum with a focus on plant reproduction, physics (motion and time, electricity), and environmental science.
Key Points:
Reproduction in Plants: Details asexual methods like vegetative propagation, budding, and fragmentation, as well as sexual reproduction involving flowers, pollination, and seeds.
Motion and Time: Introduces the concept of speed (distance/time) and how to represent motion using distance-time graphs.
Electric Current and its Effects: Covers the heating effect (used in heaters and fuses) and the magnetic effect of electric current (electromagnets).
Light: Explores the properties of light, including its travel in straight lines, reflection by spherical mirrors (concave and convex), and the behavior of lenses.
Forests: Our Lifeline: Discusses the forest ecosystem as a "green lung" that purifies air and water and supports diverse life forms.
Wastewater Story: Focuses on water sanitation, sewage treatment, and the importance of maintaining clean water sources for public health.
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