General Science | Class 7

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    Chapter 1 The Digestive System ( 6 videos)  (Practice Test)

      1.1: The Digestive System
      Digestive System
    1. Digestive System
      2514 views
      1.2: Digestion (Practice Test)
      Digestion in Stomach
    1. Digestion in Stomach
      430 views
      2. Small And Large Intestine
    2. Small And Large Intestine
      440 views
      3. Digestive Glands
    3. Digestive Glands
      796 views
      1.3: Common Disorders of Digestive System
      Diarrhoea
    1. Diarrhoea
      255 views
      2. Constipation
    2. Constipation
      245 views

    Chapter 2 Respiration and Energy from Food ( 7 videos)  (Practice Test)

      2.1: Breathing and Respiration (Practice Test)
      Respiration
    1. Respiration
      543 views
      2. Parts of Respiratory System
    2. Parts of Respiratory System
      5520 views
      3. Mechanism of Breathing
    3. Mechanism of Breathing
      8682 views
      4. Exchange of Carbon Dioxide And Oxygen
    4. Exchange of Carbon Dioxide And Oxygen
      337 views
      5. Comparison of Respiration and Burning
    5. Comparison of Respiration and Burning
      212 views
      2.2: Common Diseases of Respiratory System
      Respiratory Diseases And Their Causes
    1. Respiratory Diseases And Their Causes
      195 views
      2. Preventive Measures of Respiratory Diseases
    2. Preventive Measures of Respiratory Diseases
      31 views

    Chapter 3 The Human Transport System ( 11 videos)  (Practice Test)

      3.1: The Transport System in Humans
      Introduction To Transport In Humans And Plants
    1. Introduction To Transport In Humans And Plants
      392 views
      3.2: Blood
      Composition of Blood
    1. Composition of Blood
      179 views
      3.3: The Heart and Blood Circulation (Practice Test)
      Blood Vessels
    1. Blood Vessels
      627 views
      2. Human Heart
    2. Human Heart
      400 views
      3. Working of Circulatory System
    3. Working of Circulatory System
      287 views
      3.4: Common Disorders of Human Transport System
      Narrowing of Coronary Arteries
    1. Narrowing of Coronary Arteries
      23 views
      2. Angina Pectoris
    2. Angina Pectoris
      3. Heart Attack
    3. Heart Attack
      275 views
      4. Symptoms and Prevention of Heart Attack
    4. Symptoms and Prevention of Heart Attack
      68 views
      5. Disorders of Human Transport System Affected By Diet
    5. Disorders of Human Transport System Affected By Diet
      3.5: Transplantation of Tissues And Organs
      Transplantation of Tissues And Organs
    1. Transplantation of Tissues And Organs
      66 views

    Chapter 4 Transport in Plants ( 8 videos)  (Practice Test)

      4.1: Transport System in Plants
      Transport In Plants
    1. Transport In Plants
      155 views
      2. Absorption of Water Through Roots
    2. Absorption of Water Through Roots
      1338 views
      4.2: Structure of Root, Stem And Leaf (Practice Test)
      Structure of Root
    1. Structure of Root
      1137 views
      2. Structure of Stem
    2. Structure of Stem
      897 views
      3. Structure of Leaf
    3. Structure of Leaf
      4499 views
      4.3: Transport of Food, Water and Gases in Plants
      Transpiration
    1. Transpiration
      97 views
      2. Translocation
    2. Translocation
      109 views
      3. Transport of Gases In Plants
    3. Transport of Gases In Plants
      58 views

    Chapter 5 Reproduction in Plants ( 10 videos)  (Practice Test)

      5.1: Flowers and Pollination (Practice Test)
      Reproduction
    1. Reproduction
      1299 views
      2. Parts of a Flower
    2. Parts of a Flower
      1132 views
      3. Pollination
    3. Pollination
      324 views
      4. Pollination By Water And Wind
    4. Pollination By Water And Wind
      1004 views
      5. Pollination By Animals
    5. Pollination By Animals
      558 views
      5.2: Sexual and Asexual Reproduction in Plants
      Sexual Reproduction in Plants
    1. Sexual Reproduction in Plants
      306 views
      5.3: Fertilization in Plants (Practice Test)
      Sexual Reproduction In Plants (Germination of Pollen Grains and Fertilization)
    1. Sexual Reproduction In Plants (Germination of Pollen Grains and Fertilization)
      4349 views
      2. Conditions necessary For Germination
    2. Conditions necessary For Germination
      436 views
      5.4: Formation of Seed and Fruit (Practice Test)
      Formation of Seed And Fruit
    1. Formation of Seed And Fruit
      2487 views
      2. Structure of Seed
    2. Structure of Seed
      3185 views

    Chapter 6 Environment and Feeding Relationships ( 18 videos)  (Practice Test)

      6.1: Ecosystem (Practice Test)
      Environment
    1. Environment
      2217 views
      2. Ecosystem
    2. Ecosystem
      1792 views
      6.2: Habitat (Practice Test)
      Habitat
    1. Habitat
      441 views
      2. The Grassland Habitat
    2. The Grassland Habitat
      337 views
      3. Forest Habitat
    3. Forest Habitat
      343 views
      4. Desert Habitat
    4. Desert Habitat
      223 views
      5. Tundra Habitat
    5. Tundra Habitat
      116 views
      6. Fresh Water Habitat
    6. Fresh Water Habitat
      811 views
      7. Saltwater Habitat
    7. Saltwater Habitat
      26 views
      6.3: Adaptations of Animals and Plants to Live in a Habitat
      Adaptations of Plants To Live In A Habitat
    1. Adaptations of Plants To Live In A Habitat
      170 views
      2. Adaptations of Animals To Live In A Habitat
    2. Adaptations of Animals To Live In A Habitat
      165 views
      3. Adaptations of Animals To Live In A Habitat (Continued)
    3. Adaptations of Animals To Live In A Habitat (Continued)
      50 views
      4. Aquatic Habitat Adaptations
    4. Aquatic Habitat Adaptations
      1121 views
      6.4: Factors that Cause Changes in a Habitat
      Factors Causing Changes In A Habitat
    1. Factors Causing Changes In A Habitat
      70 views
      2. Factors Causing Changes In A Habitat (Continued)
    2. Factors Causing Changes In A Habitat (Continued)
      26 views
      3. How People Change Habitats?
    3. How People Change Habitats?
      63 views
      6.5: Food Chains and Food Webs (Practice Test)
      Food Chain
    1. Food Chain
      1060 views
      2. Food Web
    2. Food Web
      359 views

    Chapter 7 Water, Water Everywhere ( 7 videos)  (Practice Test)

      7.1: Clean Water and Life
      Introduction to Water
    1. Introduction to Water
      4889 views
      7.2: Sources of Water
      Sources of Water
    1. Sources of Water
      678 views
      2. Underground Water
    2. Underground Water
      242 views
      7.3: Impurities in Water
      Impurities in Water
    1. Impurities in Water
      711 views
      7.4: Water Pollution
      Water Pollution
    1. Water Pollution
      2644 views
      7.5: Uses of Water
      Uses of Water
    1. Uses of Water
      172 views
      2. Conservation of Water
    2. Conservation of Water
      265 views

    Chapter 8 Atoms ( 17 videos)  (Practice Test)

      8.1: Atoms and Elements (Practice Test)
      Matter
    1. Matter
      470 views
      2. Element - The Simplest Matter
    2. Element - The Simplest Matter
      1755 views
      3. Atom
    3. Atom
      25566 views
      4. Structure of An Atom
    4. Structure of An Atom
      302 views
      8.2: Atomic Number and Mass Number (Practice Test)
      Atomic Number
    1. Atomic Number
      205 views
      2. Mass Number
    2. Mass Number
      152 views
      8.3: Distribution of Electrons in Shells (Practice Test)
      Distribution of Electrons in Shell
    1. Distribution of Electrons in Shell
      660 views
      2. More on Distribution of Electrons in Shell
    2. More on Distribution of Electrons in Shell
      133 views
      8.4: Valency and Ions (Practice Test)
      Valency
    1. Valency
      277 views
      2. More on Valency
    2. More on Valency
      103 views
      3. Ions
    3. Ions
      158 views
      4. Cations And Anions
    4. Cations And Anions
      293 views
      8.5: Chemical Formula (Practice Test)
      Chemical Formula
    1. Chemical Formula
      109 views
      2. Making Chemical Formula of Ionic Compounds
    2. Making Chemical Formula of Ionic Compounds
      127 views
      8.6: Isotopes (Practice Test)
      Isotopes
    1. Isotopes
      11479 views
      2. Uses of Isotopes
    2. Uses of Isotopes
      10948 views
      8.7: Law of Constant Composition (Practice Test)
      Law of Definite(Fixed) Proportion
    1. Law of Definite(Fixed) Proportion
      8995 views

    Chapter 9 Physical and Chemical Changes ( 11 videos)  (Practice Test)

      9.1: Physical and Chemical Properties of Matter (Practice Test)
      Physical Properties of Matter
    1. Physical Properties of Matter
      582 views
      2. Chemical Properties of Matter
    2. Chemical Properties of Matter
      307 views
      9.2: Reversible and Non-reversible Changes
      Reversible And Irreversible Changes
    1. Reversible And Irreversible Changes
      357 views
      9.3: Physical and Chemical Changes (Practice Test)
      Physical Changes And Processes
    1. Physical Changes And Processes
      219 views
      2. Chemical Changes and Processes
    2. Chemical Changes and Processes
      161 views
      3. Comparison Between Physical And Chemical Changes
    3. Comparison Between Physical And Chemical Changes
      115 views
      9.4: Use of Hydrocarbons as Fuels
      Hydrocarbons
    1. Hydrocarbons
      148 views
      9.5: Useful and Harmful Effects of Fertilizers (Practice Test)
      Physical and Chemical Properties of Fertilizers
    1. Physical and Chemical Properties of Fertilizers
      284 views
      2. Environmental Hazards Related to Fertilizers Use
    2. Environmental Hazards Related to Fertilizers Use
      2189 views
      9.6: Changing of Vegetable Oil into Fat
      Changing of Vegetable Oil Into Ghee
    1. Changing of Vegetable Oil Into Ghee
      3094 views
      9.7: Manufacturing of Plastics
      Plastic And Its Manufacturing
    1. Plastic And Its Manufacturing
      159 views

    Chapter 10 Heat on the Move ( 14 videos)  (Practice Test)

      10.1: Heat and Temperature (Practice Test)
      Heat
    1. Heat
      420 views
      2. Sources of Heat
    2. Sources of Heat
      1127 views
      3. Heat By Friction
    3. Heat By Friction
      97 views
      4. Heat And Temperature
    4. Heat And Temperature
      34 views
      5. Thermometer
    5. Thermometer
      42 views
      10.2: Conduction (Practice Test)
      Conduction of Heat
    1. Conduction of Heat
      292 views
      2. Good And Bad Conductors of Heat
    2. Good And Bad Conductors of Heat
      2057 views
      3. Everyday Application of Conduction of Heat
    3. Everyday Application of Conduction of Heat
      1577 views
      10.3: Convection and Convection Currents (Practice Test)
      Transfers of Heat In Liquids
    1. Transfers of Heat In Liquids
      223 views
      2. Effects And Application of Convection
    2. Effects And Application of Convection
      405 views
      10.4: Radiation (Practice Test)
      Radiation
    1. Radiation
      543 views
      2. Good And Bad Radiators And Absorbers of Heat
    2. Good And Bad Radiators And Absorbers of Heat
      352 views
      3. Applications of Radiations In Our Daily Life
    3. Applications of Radiations In Our Daily Life
      209 views
      10.5: Vacuum Flask
      Vacuum Flask
    1. Vacuum Flask
      514 views

    Chapter 11 Dispersion of Light ( 9 videos)  (Practice Test)

      11.1: Refraction of Light (Practice Test)
      Light
    1. Light
      710 views
      2. Refraction of Light
    2. Refraction of Light
      564 views
      3. Laws of Refraction
    3. Laws of Refraction
      176 views
      11.2: Effects of Refraction
      Real And Apparent Depth
    1. Real And Apparent Depth
      803 views
      11.3: Dispersion of Light (Practice Test)
      Dispersion of Light
    1. Dispersion of Light
      568 views
      2. Rainbow Formation
    2. Rainbow Formation
      306 views
      3. Colours of Light
    3. Colours of Light
      316 views
      11.4: Newton Colour Disc
      Newton Colour Disc
    1. Newton Colour Disc
      11.5: Colours of Objects
      Colours of Objects
    1. Colours of Objects
      386 views

    Chapter 12 Sound Waves ( 17 videos)  (Practice Test)

      12.1: Sound Waves (Practice Test)
      Sound
    1. Sound
      1461 views
      2. Sound Waves Are Vibrations
    2. Sound Waves Are Vibrations
      421 views
      3. Sound Waves Are Longitudinal Waves
    3. Sound Waves Are Longitudinal Waves
      3951 views
      4. Speed of Sound in Different Materials
    4. Speed of Sound in Different Materials
      840 views
      12.2: How Sound Travels (Practice Test)
      How Does Sound Travel?
    1. How Does Sound Travel?
      654 views
      2. Sound Needs A Medium To Travel
    2. Sound Needs A Medium To Travel
      873 views
      12.3: Speed of Sound in Solids, Liquids, and Gases (Practice Test)
      Speed of Sound in Solids, Liquids And Gases
    1. Speed of Sound in Solids, Liquids And Gases
      1408 views
      2. Speed of Sound in Different Materials
    2. Speed of Sound in Different Materials
      840 views
      12.4: Characteristics of Sound Waves (Practice Test)
      Amplitude And Wavelength of Sound Waves
    1. Amplitude And Wavelength of Sound Waves
      1114 views
      2. Time Period And Frequency of Sound Waves
    2. Time Period And Frequency of Sound Waves
      701 views
      3. Velocity Or Speed of Sound Waves
    3. Velocity Or Speed of Sound Waves
      487 views
      4. Relationship Between Speed, Wavelength And Frequency of Sound Waves
    4. Relationship Between Speed, Wavelength And Frequency of Sound Waves
      427 views
      12.5: Pitch of Sound
      Pitch of Sound
    1. Pitch of Sound
      6376 views
      12.6: Loudness of Sound
      Loudness of Sound
    1. Loudness of Sound
      989 views
      12.7: Audible Frequency Range
      Audible Frequency Range
    1. Audible Frequency Range
      227 views
      12.8: Application of Different Sounds in Our Daily Life
      Applications of Different Sounds
    1. Applications of Different Sounds
      97 views
      12.9: Sounds Produced by Different Musical Instruments
      Sounds Produced By Different Musical Instruments
    1. Sounds Produced By Different Musical Instruments
      262 views

    Chapter 13 Circuits and Electric Currents ( 24 videos)  (Practice Test)

      13.1: Electric Current (Practice Test)
      Electricity and Its Kinds
    1. Electricity and Its Kinds
      134 views
      2. Electric Current
    2. Electric Current
      112 views
      13.2: Electric Circuit (Practice Test)
      Circuit Diagrams
    1. Circuit Diagrams
      61 views
      2. Series Circuit
    2. Series Circuit
      314 views
      3. Parallel Circuit
    3. Parallel Circuit
      266 views
      4. Advantages of A Parallel Circuit Over A Series Circuit
    4. Advantages of A Parallel Circuit Over A Series Circuit
      318 views
      13.3: Current and Energy
      Flow of Current
    1. Flow of Current
      189 views
      2. Energy Transfer In An Electrical Circuit
    2. Energy Transfer In An Electrical Circuit
      1511 views
      13.4: Effects of Electric Current (Practice Test)
      Heating Effect of Current
    1. Heating Effect of Current
      58 views
      2. Electricity Produces Light
    2. Electricity Produces Light
      13 views
      3. Making The Magnet
    3. Making The Magnet
      58 views
      4. Uses of Magnets And Electromagnets
    4. Uses of Magnets And Electromagnets
      85 views
      5. Magnetic Effect of Current
    5. Magnetic Effect of Current
      265 views
      6. Chemical Effect of Current
    6. Chemical Effect of Current
      1269 views
      7. Electric Bell
    7. Electric Bell
      663 views
      13.5: Voltage and Resistance (Practice Test)
      Potential Difference
    1. Potential Difference
      306 views
      2. Resistance
    2. Resistance
      78 views
      3. Relationship Between Voltage And Resistance (Ohm's Law)
    3. Relationship Between Voltage And Resistance (Ohm's Law)
      166 views
      13.6: Measuring Current by Using Different Devices (Practice Test)
      Measuring Current
    1. Measuring Current
      77 views
      2. Measuring Resistance
    2. Measuring Resistance
      97 views
      3. Electrical Power
    3. Electrical Power
      51 views
      13.7: Safe Use of Electricity at Home (Practice Test)
      Why is Electricity Dangerous?
    1. Why is Electricity Dangerous?
      47 views
      2. Safety Devices To Avoid Electrical Hazards
    2. Safety Devices To Avoid Electrical Hazards
      80 views
      3. More on Safety Devices To Avoid Electrical Hazards
    3. More on Safety Devices To Avoid Electrical Hazards
      60 views

    Chapter 14 Investigating Space ( 13 videos)  (Practice Test)

      14.1: The Universe and its Origin (Practice Test)
      What is Beyond Our Solar System?
    1. What is Beyond Our Solar System?
      279 views
      2. The Origin of The Universe
    2. The Origin of The Universe
      149 views
      14.2: Bodies That Emit And Reflect Light In Space
      Bodies That Emit And Reflect Light In Space
    1. Bodies That Emit And Reflect Light In Space
      14.3: Stars (Practice Test)
      Stars
    1. Stars
      128 views
      2. Sun As A Star
    2. Sun As A Star
      53 views
      3. Looking At Stars
    3. Looking At Stars
      27 views
      4. Safety Tips For Observing The Sun
    4. Safety Tips For Observing The Sun
      63 views
      5. Birth Of A Star
    5. Birth Of A Star
      102 views
      6. Death Of A Star
    6. Death Of A Star
      77 views
      14.4: Galaxy and its Types (Practice Test)
      Galaxies
    1. Galaxies
      311 views
      2. Milky Way Galaxy
    2. Milky Way Galaxy
      201 views
      14.5: Constellations (Practice Test)
      Constellations
    1. Constellations
      136 views
      14.6: Black Holes (Practice Test)
      Black Holes
    1. Black Holes
      147 views