Which chapter's are weightage in science 1 for class 10th ssc maharashtra board?

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Evaluation scheme of Maharashtra Board SSC Science and Technology subject –

The total marks for Maharashtra Board SSC Science and Technology Exam will be 100.

There will be one question paper for Class 9th as well as for Class 10th.

The question paper will be of 80 marks.

The practical/viva/projects will be of 20 marks

Maharashtra Board SSC Science and Technology Syllabus

Maharashtra Board Class 9th Science and Technology Syllabus:

Chapter

Detailed topics

Chapter 1: Food

Plant and animal breeding and selection for quality improvement

Use of fertilizers, manures

Protection from pests and diseases; organic farming

Chapter 2: Materials

Matter: All things occupy space, possess mass. Definition of matter, characteristics of solids, liquids and gases e.g. shape, volume, density. Change of state: freezing, melting, evaporation, condensation, sublimation. Cooling by evaporation. Absorption of heat

Elements, mixtures and Compounds: elements, compounds and mixtures as types of chemical substances. Types of mixtures; Heterogeneous, homogeneous, colloids, suspensions

Combination of substances: Law of constant proportion, atomic and molecular masses. Particle nature, basic units: Atoms and Molecules

Mole Concept: Relationship of mole to mass of the particles and numbers

Valence, Chemical formulae of common compounds

Atomic Structure: Electrons, protons and neutrons. Atomic number and atomic mass number. Isotopes and Isobars.

Chapter 3: The World of the Living

Biological Diversity: Diversity of plants and animals: Basic issues in scientific naming. Basis of classification, Hierarchy of categories/ groups. Plant classification: Major Plant groups (salient features): Bacteria, Thalophyta, Bryophyta, Pteridophyta, gymnosperms and Angiosperms. Animal Classification : Major groups of animals (salient features): Non Chordates up to phyla and non chordates up to classes

Smallest living unit of Life- Cell : Cell as a basic unit of life prokaryotic and eukaryotic cells, multi-cellular organisms; cell membrane and cell wall, cell organelles, chloroplast, mitochondria, vacuoles, ER, Golgi apparatus. Nucleus, chromosomes, basic structure, number. Tissues, organs, organ system, organism Structure and functions of animal and plant tissues. (four types in animals; meristematic and permanent tissues in plants)

Health:

Failure of health leading to disease

Disease and its causes

Diseases caused by microbes and their prevention: Typhoid, diarrhoea, malaria,hepatitis, rabies, AIDS, TB, Polio

Pulse Polio program

Exchange of substances by living organisms with the external world: Diffusion/exchange of substances between cells and their environment and between the cell themselves in the living system; role in nutrition, water and food transport, excretion, gaseous exchange

Chapter 4: Moving Things. People and ideas. Motion

Motion: displacement, velocity, Uniform and non-uniform motion along a straight line,acceleration, distance-time and velocity-time graphs for motion and uniformly accelerated motion. Equations of motion by graphical method, Elementary idea of uniform circular motion

Force and Newton's Laws : Force and Motion; Newton's Laws of Motion. Inertia of a.body, inertia and mass, momentum, force and acceleration. Elementary idea of conservation of momentum, action and reaction forces

Gravitation: gravitation, universal law of gravitation, force of gravitation of theearth (earth's gravity), acceleration due to gravity, mass and weight, free fall

Work, Energy and Power: work done by a force, energy, power. Kinetic and Potential energy, Law of conservation of energy

Floating Bodies: Thrust and Pressure, Archimedes' Principle, Buoyancy. Idea of relative density

Sound: Nature of sound and its propagation through different media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo and SONAR Structure of the Human Ear. (Auditory aspect)

Chapter 5: Natural Resources - Understanding Ecosystem

Types of ecosystem - forest, grassland, desert, aquatic, costal, marine

Interaction between biotic and abiotic factors in an eco-system

Energy flow and its importance: Cycles of nutrients in terrestrial and aquatic (fresh water and marine) ecosystems, nature's mechanism in maintaining balance.

Chapter 6: Waste Generation and Management

Sources of waste - domestic, industrial, agricultural and commercial

Classification of waste: biodegradable non biodegradable, toxic, non- toxic biomedical

Impact of waste accumulation - Spoilage of landscape, pollution, health hazards, effect on terrestrial and aquatic (fresh water and marine) life

Need for management of waste

Methods of safe disposal of waste segregation, dumping, composting, drainage, treatment of effluents before discharge, incineration, use of scrubbers and electrostatic precipitators

Need for reducing, reusing and recycling waste

Legal provisions for handling and management of waste