# Andhra Pradesh Board Science Syllabus for Class 9

## Andhra Pradesh Board Syllabus for Class 9 Science

COURSE STRUCTURE
SCIENCE

Class - IXth

Unit 1
Science and its History History of Science. Important Scientific discoveries and its Effect on our life Styles. Our Important Scientists and Scientific Institutions. Science in Modern Context.

Unit 2
Measurement in science and Technology and Nature of Matter. Matter -Nature and Behaviour :- Measurement in Science and technology International system of Units (S.I.), Maintenance of its standards. Nature of Matter :- What is Matter?
Classification of Matter :- Type and Properties of Elements, Compound and Mixture-Difference between Element, Compound, Mixture, Solution- Homogenous and Heterogenous, Suspension and Colloid types of solution. Atoms and Molecules, Atomic theory of matter (Dalton's postulates), Atomic and molecular masses, the mole concept law of constant, proportion,
determination of empirical and molucular formulae of simple substances.

Unit 3 Motion, Force and Gravitation
Motion :- In living and Non-living uniform and non-uniform motion, one dimension, some technical words-Body, particle, body, distance, displacement, speed, velocity,Acceleration, retardation, difference between velocity and speed.Force :- Mass, Inertia, lassification of force, Newton's first law of motion, momentum,Imples, Newton's second law of motion, Unit of force, Law of onservation of momen tum, Uniform circular motion, Simple harmonic motion.
Friction - Factors affecting friction, Sliding & rolling friction, Advantages & Disadvan tages, friction (Example) Ways and means to increase and decrease of the friction, Pres sure thrust, Archimedes principles and its applications, relative density.
Gravitation :- Gravitational force, Universal Law of gravitation, Acceleration due to gravity,
mass and weight, free falling body under the influnce of gravity.

Unit 4
Work, Energy & Power -Work done by constant force, power energy, Kinetic and potential, Heat and tempreture, Convertion of tempreture in celsius and kelvin scale, thermometer, laboratory and clinical, Heat - specific heat, Heat capacity, calculation of heat with the method of mixture. change of state, latent heat, cooling due to evaporation, humidity and specific humidity, Thermal expansion, Linear co- efficient of expansion, coefficient of expansion in area, coefficient of volume expansion.

Unit 5
Sound:- Nature of sound and its propagation, range of hearing in humans, Structure of Human ear, ultrasonic waves and its applications. Reflaction of sound - echo, sonar, Types of wave, longitudinal and transverse, amplitude, wave length and frequancy.

Unit 6
Structure of Atom :- Constituents of an atom - electron, Proton, neutron, atomic number and mass number, Isotopes, distribution of electrons in shells (upto atomic number 20) valence electrons and valency. Radioactivity, Radio-
Isotopes and their application.

Unit 7
Periodic Table of Elements :- A brief historical perspective of periodic classification of elements, periodic law, modern periodic table of 18 columns, variation in properties across a period and along a group- metallic and non metallic.

Unit 8
Chemical Bonding :- Formation of a chemical Bond, types of bonds- ionic and covalent, electronegativity and polar covalent bond, properties of ionic and covalent compound. Reactions :- chemical reactions, Formulae of simple compounds.equation of
simple chemical reation and their balancing. Types of chemical reactions- combination, decomposition, displacement (single and double displacement)
oxidation and reduction (in terms of gain/loss of electrons).

Unit 9
Living world:- Organisation in the living world:- Cell and cell structure- Cell structure, difference between prokaryotic and eukaryotic cells, functions of cell organells, cell division mitosis (different stages), elementary idea of meiosis. Tissues-Plant tissues- Structure and functions, animal tissues, structure and
functions.
Diversity:- In the living world general idea of classification of living organisms and their importance, nomenclature, classification (two kingdom) with characteristics and examples up to phylum in plants and invertibrate animals and upto class levels in chordate animals.

Unit 10
Nutrition and Health:- General idea of Human body, health and its importance, community and personal health, conditions essential for good health. (Nutrition proper habits, exercise, and relaxation). Components of food, balanced diet, under-nutrition and malnutrition, food adulternation (definition, common food adulterants, their tests and harmful effects) quality of drinking water, WHO elementry introduction Human Diseases:- Diseases-definition-Source and types of diseases (Communicable and non Communicable diseases, Symptoms, prevention and control
of some diseases, malaria, influenza, Cholera, diarrhoea, Jaundice, typhoid, rabies,AIDS, tuberculosis. Deficiency diseases-protein energy malnutrition (Marasmusand kwashiorkar) Vitamin deficiency (Scurvy, rickets, beriberi, Pellagra, Xerophtalmia,
Mineral deficiency (Anaemia, Goitre).

Unit 11. Food Resource- Sustainable Agriculture :-
Mixed farming, mixed cropping, crop rotations (Biological and Economic Consideration) Varietal improvement through breeding and selection. Food Resource- Animals Improved breeds,- Cattle and live stock breeding, food and shetter for livestock, prevention against major diseases.

Unit 12. Our Natural Resources :-
Our Natural Resources- Air, Water, Soil, Minerals, Energy, flora and fauna, Management and replenishment of Natural resources. Coal and Petroleum - Coal and Petroleum as natural resources of carbon and its compounds, coal, its destructive distillation (in brief). Carbon -
Tetravalency and Catenation. Hydro Carbon classification. (Saturated and Unsaturated). Homologous series, Isomerism; Preparation and properties of
methane, ethane, and ethyne.

Unit 13. Environment - Our Environment :-
Habitat and Adaptation, Habitat and its types, adaptation in plants and animals. Medicinal plants existing and are being planted around human habitat- like Tulsi, Vinca Rosia, Oak, Bhuiaonla, Fenugreak, Coriander, Kalmegh, Rose, Bhringraj, Ginger,
Turmeric, Garlic etc. their botanical names, study of their medicinal use and utility in envi- ronment conservation.
Biosphere:Ecosystem and biosphere structure of an ecological System, food chain food webs, trophic levels, function of an Ecological system, flow of energy in nature conservation and energy crisis, biogas, chemical cycles of materials (Carbon and Nitrogen). Types of Ecosystem, biomass, biodiversityand its importance.

## Andhra Pradesh Board Best Sellers

In order to keep pace with technological advancement and to cope up with Andhra Pradesh Board examinations, Pearson group has launched Edurite to help students by offering Books and CDs of different courses online.