Viva ICSE Physics 7

Contents:

Chapter 1: Physical Quantities and Measurement • MEASURING AREA • Measuring Area of Irregular Surfaces • MEASURING VOLUME • Measuring Volume of Liquids, Measuring Volume of Regular Solids, Measuring Volume of Irregular Solids • MEASURING DENSITY • Units of Density, Determination of Density of a Regular Solid, Determination of Density of an Irregular Solid, Determination of Density of a Liquid • SPEED • Units of Speed

Chapter 2: Motion • REST AND MOTION • Rest and Motion are Relative Terms • TYPES OF MOTION • Translatory Motion, Circulatory Motion, Rotatory Motion, Oscillatory Motion, Vibratory Motion, Periodic Motion, Non-Periodic Motion, Multiple Motion, Rolling Motion, Random Motion • DISTANCE AND DISPLACEMENT • UNIFORM AND NON-UNIFORM MOTION • Uniform Motion, Non-Uniform Motion, Average Speed • MASS AND WEIGHT • Mass, Weight

Chapter 3: Energy • ENERGY • Different Forms of Energy, Energy in Action, Stored Energy • ENERGY TRANSFORMATION • CONSERVATION OF ENERGY

Chapter 4: Light • REFLECTION OF LIGHT • Mirrors • TERMS RELATED TO REFLECTION • LAWS OF REFLECTION • REGULAR AND IRREGULAR REFLECTION • Regular Reflection, Irregular Reflection • IMAGE FORMATION BY PLANE MIRROR • Image of a Point Object, Image of a Large Object, Lateral Inversion • USES OF PLANE MIRROR • SPEED OF LIGHT • COMPOSITION OF WHITE LIGHT • PRIMARY COLOURS • SECONDARY COLOURS • SUBTRACTION OF COLOURS • APPEARANCE OF COLOUR OF OPAQUE OBJECTS • Applications

Chapter 5: Heat • HEAT • Units of Heat • TEMPERATURE • Units of Temperature, Thermometer, Temperature Scales • EFFECTS OF HEAT • Change in Temperature, • Change in State of Matter, Change in the Dimensions (Expansion and Contraction) • THERMAL EXPANSION • Expansion of Solids, Expansion of Liquids, Expansion of Gases • MODES OF HEAT TRANSFER • Conduction, Convection, Radiation • THERMOS FLASK • Conduction and Working

Chapter 6: Sound • PRODUCTION OF SOUND • SOURCES OF SOUND • Tuning Fork, Sound Production by Human Beings, Musical Instruments • PROPAGATION OF SOUND • Requirements for Propagation of Sound, Direction of Propagation of Sound • SOUND AS A LONGITUDINAL WAVE • Propagation of Sound as a Longitudinal Wave, Important Terms Related to Sound Waves • CHARACTERISTICS OF SOUND • Loudness or Intensity and Amplitude, Frequency and Pitch • SPEED OF SOUND • RELATIVE SPEED OF SOUND IN DIFFERENT MEDIUMS • REFLECTION AND ABSORPTION OF SOUND • Echo, Good and Bad Reflectors of Sound • SOUND PROOF BOX

Chapter 7: Electricity and Magnetism • PROPERTIES OF A MAGNET • LAW OF MAGNETISM • MAGNETIC FIELD AROUND A MAGNET • ELECTROMAGNETISM • ELECTROMAGNETS • Properties of an Electromagnet, Uses of an Electromagnet • ELECTRIC BELL • Construction, Working • ELECTRICITY • ELECTRIC CURRENT • Flow of Charge: Current, Magnitude of Electric Current, Electric Cell • BATTERY • ELECTRICAL CIRCUITS • Electric Circuit Symbols • CONDUCTORS AND INSULATORS • SERIES AND PARALLEL CIRCUITS • Series Circuit, Parallel Circuit

At a Glance

Ask and Learn

Attempt and Score

Logical Thinking

About the Authors:

Prof. Suresh Garg has been associated with School of Sciences in lndira Gandhi National Open University, New Delhi since 1993. He served as Commonwealth Expert on Distance Science Teaching at the University of the South Pacific, Fiji Islands from 1996 to 1998. During 1999-2002, he was appointed as Director, School of Sciences of the University and in 2002-2006, he served as Pro-Vice Chancellor and Acting Vice Chancellor of IGNOU. In the period 2008-2010, as Commonwealth expert, he worked as Founder Director, Centre for Learning and Teaching, National University of Lesotho, Lesotho, Southern Africa.

He has been a member of several national and international professional bodies like lndian Association of Physics Teachers, CASTME-Asia, and ICTP-India. Having served on academic, research and management boards of several conventional and open universities in the country and abroad, he carries vast experience in educational planning, management and pedagogy. His books in Physics are widely prescribed by several universities in India. He has also published two books on different aspects of lndian higher education. He has also co-edited five books in different areas of distance education, besides publishing more than 75 research papers in national and international journals of repute, 20 chapters in books and a large number of popular articles. During the period 2003-2006, he was Chief Editor of lndian Journal of Open Learning published by IGNOU. Between 2004 and 2006, he was Editor of Global E-Journal of Open, Flexible & Distance Education. He has been on the Editorial Boards of AAOU Journal on open learning, Staff and Educational Development International, lnternational Journal of Scientific, Engineering and Educational Research published online and Open Praxis published by International Council for Distance Education.

Neha Sharma is a gold medalist in M.Tech. from Guru Gobind Singh lndraprastha University. She did her M.Sc. from the University of Delhi and has worked as an Assistant Professor in Galgotias College of Engineering and Technology, Greater Noida for more than seven years. Presently she is working as a PGT faculty in Venkateshwar Global School, Rohini.