Class 8 Science - ODISHA
Health: The Ultimate Treasure
The chapter 'Health: The Ultimate Treasure' in Class 8 Science under the Odisha BSE syllabus explores the fundamental concepts of physical, mental, and social well-being. Students learn about the difference between being healthy and being disease-free, the classification of communicable and non-communicable diseases, and the role of pathogens, vectors, and the immune system. The chapter emphasizes balanced diets, personal hygiene, and community sanitation in preventing illnesses like malaria, dengue, and cholera. For board exams, mastering this chapter is crucial as it forms the basis of health science and carries direct conceptual and application-based questions.
Start Learning FreeKey Concepts
Health
Health is a state of complete physical, mental, and social well-being, and not merely the absence of disease or infirmity.
Communicable Diseases
Diseases that can spread from an infected person to a healthy person through air, water, food, or vectors like insects.
Non-Communicable Diseases
Diseases that do not spread from person to person, often caused by lifestyle factors, genetics, or deficiency of nutrients.
Balanced Diet
A diet that contains the proper proportions of carbohydrates, proteins, fats, vitamins, minerals, and water necessary for good health.
Vaccination
The administration of a vaccine to stimulate the immune system against a specific infectious disease, providing long-lasting immunity.
Important Formulas
Board Exam Info
In the Odisha BSE Class 8 Science examinations, this chapter typically carries around 4 to 6 marks. Questions usually include short-answer questions defining health and diseases, differentiating between communicable and non-communicable diseases, and long-answer questions explaining preventive measures for vector-borne diseases.
Frequently Asked Questions
Being disease-free simply means a person does not have any specific ailment or organic malfunction. Health, on the other hand, includes physical, mental, and social well-being of an individual.
Being disease-free means not having any visible illness, while health includes physical, mental, and social well-being.
How do mosquitoes spread diseases like malaria and dengue?
Mosquitoes act as vectors that carry disease-causing pathogens from an infected person to a healthy person through their bites.
Why is a balanced diet important for our immune system?
A balanced diet provides all essential nutrients that help build and repair body tissues and strengthen the immune system to fight off infections.
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