Course description

Class 8th Science builds curiosity and understanding of the world around us through the study of physics, chemistry, and biology. The syllabus covers important topics such as cell structure and functions, microorganisms, force and pressure, sound, chemical effects of electric current, combustion and flame, metals and non-metals, reproduction in animals, and conservation of natural resources. Through experiments, activities, and real-life applications, students develop observation skills, logical reasoning, and a scientific outlook. This stage strengthens their foundation and prepares them for advanced concepts in higher classes.

What will i learn?

  • Clear Concept of Mass & Weight – Students understand that mass is constant, while weight depends on gravity. Scientific Vocabulary – Ability to correctly use terms like scalar, vector, kilograms, and newtons. Formula Application – Students learn and apply the relation 𝑊 = 𝑚 × 𝑔 W=m×g. Practical Understanding – They realize why objects weigh differently on Earth and the Moon, but mass remains the same. Comparison Skills – Students gain practice in explaining concepts through differences (definition, units, examples). Foundation for Higher Physics – Builds a strong base for advanced topics like gravitation and motion in higher classes.

Requirements

  • Conceptual Understanding – Students must know the definitions of mass and weight. Comparison Skills – Ability to highlight the differences clearly (nature, units, dependence on gravity, constancy). Knowledge of SI Units – Mass → kilogram (kg), Weight → newton (N). Application of Formula – Recognize that Weight = Mass × 𝑔 Weight=Mass×g. Real-Life Understanding – Relating to situations like why weight is different on Earth and Moon, but mass remains the same.

Frequently asked question

Mass is the amount of matter present in a body. It is a scalar quantity, measured in kilograms (kg), and it does not change with place. Weight is the force with which the Earth attracts a body towards its center. It is a vector quantity, measured in newtons (N), and it changes with gravity. 👉 Formula: Weight (W) = Mass (m) × Acceleration due to gravity (g) Weight (W)=Mass (m)×Acceleration due to gravity (g) Example: A body of mass 10 kg will have the same mass on Earth and Moon, but its weight will be less on the Moon because gravity is weaker there. ✅ In short: Mass = matter in the body (constant), Weight = force due to gravity (variable).

Free

Lectures

17

Skill level

Beginner

Expiry period

Lifetime

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