General Science | Class 7

Select a chapter above and press 'Show Content'. Click a video topic below to view.

    Chapter 1 Human Organ Systems ( 21 videos)  (Practice Test)

      1.1: Human Digestive System (Practice Test)
      Food And Nutrition
    1. Food And Nutrition
      672 views
      2. Digestive System
    2. Digestive System
      2514 views
      3. Digestion in Stomach
    3. Digestion in Stomach
      430 views
      4. Small And Large Intestine
    4. Small And Large Intestine
      440 views
      5. Digestive Glands
    5. Digestive Glands
      796 views
      6. Diarrhoea
    6. Diarrhoea
      255 views
      7. Constipation
    7. Constipation
      245 views
      1.2: Respiratory System (Practice Test)
      Respiration
    1. Respiration
      543 views
      2. Parts of Respiratory System
    2. Parts of Respiratory System
      5520 views
      3. Exchange of Carbon Dioxide And Oxygen
    3. Exchange of Carbon Dioxide And Oxygen
      337 views
      4. How Does Respiration Takes Place In Man?
    4. How Does Respiration Takes Place In Man?
      56 views
      5. Mechanism of Breathing
    5. Mechanism of Breathing
      8682 views
      6. Comparison of Respiration and Burning
    6. Comparison of Respiration and Burning
      212 views
      7. Cellular Respiration, Gaseous Exchange and Breathing
    7. Cellular Respiration, Gaseous Exchange and Breathing
      27417 views
      8. Respiration
    8. Respiration
      5542 views
      9. Respiratory System
    9. Respiratory System
      2357 views
      10. Comparison of Aerobic and Anaerobic Respiration
    10. Comparison of Aerobic and Anaerobic Respiration
      1915 views
      11. Importance of Respiration
    11. Importance of Respiration
      1082 views
      12. Common Cold
    12. Common Cold
      73 views
      13. Pneumonia
    13. Pneumonia
      146 views
      14. Tuberculosis
    14. Tuberculosis
      127 views

    Chapter 2 Transport in Humans And Plants ( 23 videos)  (Practice Test)

      2.1: Transport in Humans (Practice Test)
      Introduction To Transport In Humans And Plants
    1. Introduction To Transport In Humans And Plants
      392 views
      2. Human Heart
    2. Human Heart
      400 views
      3. Blood Circulatory System
    3. Blood Circulatory System
      3059 views
      4. Working of Circulatory System
    4. Working of Circulatory System
      287 views
      5. Blood Vessels
    5. Blood Vessels
      627 views
      6. Comparison of Arteries, Capillaries and Veins
    6. Comparison of Arteries, Capillaries and Veins
      3363 views
      7. Composition of Blood
    7. Composition of Blood
      179 views
      2.2: Disorders of Circulatory System (Practice Test)
      Heart Attack
    1. Heart Attack
      275 views
      2. Symptoms and Prevention of Heart Attack
    2. Symptoms and Prevention of Heart Attack
      68 views
      3. High Blood Pressure or Hypertension
    3. High Blood Pressure or Hypertension
      126 views
      2.3: Transplantation of Tissues or Organs
      Transplantation of Tissues And Organs
    1. Transplantation of Tissues And Organs
      66 views
      2.4: Transportation in Plants (Practice Test)
      Transport In Plants
    1. Transport In Plants
      155 views
      2. Absorption of Water Through Roots
    2. Absorption of Water Through Roots
      1338 views
      3. Transpiration
    3. Transpiration
      97 views
      4. Systems of A Plant
    4. Systems of A Plant
      864 views
      5. Preparation of Food by Plants or Photosynthesis
    5. Preparation of Food by Plants or Photosynthesis
      88 views
      6. Structure of Leaf and Photosynthesis
    6. Structure of Leaf and Photosynthesis
      4655 views
      7. Factors Affecting the Rate of Transpiration
    7. Factors Affecting the Rate of Transpiration
      5640 views
      2.5: Translocation
      Translocation
    1. Translocation
      109 views
      2.6: 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. Comparison of Photosynthesis and Respiration
    4. Comparison of Photosynthesis and Respiration
      637 views

    Chapter 3 Reproduction in Plants ( 15 videos)  (Practice Test)

      3.1: Pollination (Practice Test)
      Parts of a Flower
    1. Parts of a Flower
      1132 views
      2. Reproduction
    2. Reproduction
      1299 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
      3.2: Kinds of Reproduction (Practice Test)
      Vegetative Propagation In Plants
    1. Vegetative Propagation In Plants
      230 views
      2. Cutting and Layering in Plants
    2. Cutting and Layering in Plants
      245 views
      3. Runners and Tubers
    3. Runners and Tubers
      282 views
      4. Budding and Grafting in Plants
    4. Budding and Grafting in Plants
      145 views
      5. Underground Stem
    5. Underground Stem
      759 views
      6. Sexual Reproduction
    6. Sexual Reproduction
      518 views
      7. Sexual Reproduction in Plants
    7. Sexual Reproduction in Plants
      306 views
      3.3: Fertilization in Plants
      Sexual Reproduction In Plants (Germination of Pollen Grains and Fertilization)
    1. Sexual Reproduction In Plants (Germination of Pollen Grains and Ferti
      4349 views
      3.4: 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 4 Environment and Feeding Relationship ( 20 videos)  (Practice Test)

      4.1: Ecosystem (Practice Test)
      Environment
    1. Environment
      2217 views
      2. Ecosystem
    2. Ecosystem
      1792 views
      3. Biotic components of an Environment
    3. Biotic components of an Environment
      2541 views
      4. Abiotic components of an Environment
    4. Abiotic components of an Environment
      1496 views
      5. Impact of Combustion Reaction on Environment
    5. Impact of Combustion Reaction on Environment
      4.2: Habitat (Practice Test)
      The Grassland Habitat
    1. The Grassland Habitat
      337 views
      2. Forest Habitat
    2. Forest Habitat
      343 views
      3. Desert Habitat
    3. Desert Habitat
      223 views
      4. Tundra Habitat
    4. Tundra Habitat
      116 views
      5. Fresh Water Habitat
    5. Fresh Water Habitat
      811 views
      6. Saltwater Habitat
    6. Saltwater Habitat
      26 views
      7. Adaptations of Plants To Live In A Habitat
    7. Adaptations of Plants To Live In A Habitat
      170 views
      8. Adaptations of Animals To Live In A Habitat
    8. Adaptations of Animals To Live In A Habitat
      165 views
      9. Adaptations of Animals To Live In A Habitat (Continued)
    9. Adaptations of Animals To Live In A Habitat (Continued)
      50 views
      10. Aquatic Habitat Adaptations
    10. Aquatic Habitat Adaptations
      1121 views
      11. Factors Causing Changes In A Habitat
    11. Factors Causing Changes In A Habitat
      70 views
      12. Factors Causing Changes In A Habitat (Continued)
    12. Factors Causing Changes In A Habitat (Continued)
      26 views
      4.3: Biotic components and Their Relation With Food Chains And Food Webs (Practice Test)
      Biotic components of an Environment
    1. Biotic components of an Environment
      2541 views
      2. Food Chain
    2. Food Chain
      1060 views
      3. Food Web
    3. Food Web
      359 views

    Chapter 5 Water ( 10 videos)  (Practice Test)

      5.1: Water and Life
      Introduction to Water
    1. Introduction to Water
      4889 views
      5.2: Sources of Water
      Sources of Water
    1. Sources of Water
      678 views
      2. Underground Water
    2. Underground Water
      242 views
      5.3: Impurities of Water
      Impurities in Water
    1. Impurities in Water
      711 views
      5.4: Cleaning of Water (Practice Test)
      Filtration
    1. Filtration
      32 views
      2. Purifying Water By Boiling
    2. Purifying Water By Boiling
      50 views
      3. Purification of Water By Chlorination And Addition of Potash Alum
    3. Purification of Water By Chlorination And Addition of Potash Alum
      100 views
      4. Distillation
    4. Distillation
      424 views
      5.5: Uses of Water
      Uses of Water
    1. Uses of Water
      172 views
      2. Conservation of Water
    2. Conservation of Water
      265 views

    Chapter 6 Structure of an Atom ( 24 videos)  (Practice Test)

      6.1: Structure of an Atom (Practice Test)
      Atom
    1. Atom
      25566 views
      2. Structure of An Atom
    2. Structure of An Atom
      302 views
      6.2: Atomic Number and Mass Number (Practice Test)
      Atomic Number
    1. Atomic Number
      205 views
      2. Mass Number
    2. Mass Number
      152 views
      3. Atomic Number and Mass Number
    3. Atomic Number and Mass Number
      7401 views
      6.3: Distribution of Electrons in Shells or orbits (Practice Test)
      Using 2n²
    1. Using 2n²
      116 views
      2. Distribution of Electrons in Shell
    2. Distribution of Electrons in Shell
      660 views
      3. More on Distribution of Electrons in Shell
    3. More on Distribution of Electrons in Shell
      133 views
      6.4: 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
      5. Ionic Bond
    5. Ionic Bond
      12605 views
      6. Covalent Bond
    6. Covalent Bond
      9028 views
      6.5: Isotopes And Their Uses (Practice Test)
      Isotopes
    1. Isotopes
      11479 views
      2. Uses of Isotopes
    2. Uses of Isotopes
      10948 views
      6.6: Chemical Formula (Practice Test)
      Molecules
    1. Molecules
      186 views
      2. Chemical Formula
    2. Chemical Formula
      109 views
      3. Making Chemical Formula of Ionic Compounds
    3. Making Chemical Formula of Ionic Compounds
      127 views
      4. Why do Atoms Form Chemical Bonds?
    4. Why do Atoms Form Chemical Bonds?
      14190 views
      5. Classify Bonds as Ionic or Covalent
    5. Classify Bonds as Ionic or Covalent
      1966 views
      6. Types of Compound
    6. Types of Compound
      3108 views
      6.7: Law of Constant Composition (Practice Test)
      Law of Definite(Fixed) Proportion
    1. Law of Definite(Fixed) Proportion
      8995 views
      2. Chemical Bond
    2. Chemical Bond
      10646 views

    Chapter 7 Physical and Chemical Changes And Processes ( 12 videos)  (Practice Test)

      7.1: 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. Combustion Reaction
    3. Combustion Reaction
      1831 views
      4. Impact of Combustion Reaction on Environment
    4. Impact of Combustion Reaction on Environment
      5. Prevention of Corrosion
    5. Prevention of Corrosion
      5034 views
      7.2: Applications of Chemical Changes (Practice Test)
      Applications of Chemical Changes And Processes
    1. Applications of Chemical Changes And Processes
      97 views
      2. Hydrocarbons
    2. Hydrocarbons
      148 views
      3. Changing of Vegetable Oil Into Ghee
    3. Changing of Vegetable Oil Into Ghee
      3094 views
      4. Physical and Chemical Properties of Fertilizers
    4. Physical and Chemical Properties of Fertilizers
      284 views
      5. Environmental Hazards Related to Fertilizers Use
    5. Environmental Hazards Related to Fertilizers Use
      2189 views
      6. Plastic And Its Manufacturing
    6. Plastic And Its Manufacturing
      159 views
      7.3: Reversible And Irreversible Changes
      Reversible And Irreversible Changes
    1. Reversible And Irreversible Changes
      357 views

    Chapter 8 Transmission of Heat ( 19 videos)  (Practice Test)

      8.1: Transmission of heat (Practice Test)
      Heat
    1. Heat
      420 views
      2. Define The Terms Heat and Temperature on The Basis of Kinetic Molecular Theory
    2. Define The Terms Heat and Temperature on The Basis of Kinetic Molecul
      3. Temperature Scales
    3. Temperature Scales
      32 views
      4. Converting Temperature Scales
    4. Converting Temperature Scales
      26 views
      8.2: Conduction (Practice Test)
      Heat
    1. Heat
      420 views
      2. Conduction of Heat
    2. Conduction of Heat
      292 views
      3. Good And Bad Conductors of Heat
    3. Good And Bad Conductors of Heat
      2057 views
      4. Everyday Application of Conduction of Heat
    4. Everyday Application of Conduction of Heat
      1577 views
      5. Practical Methods of Thermal Insulation Used for Constructing Buildings
    5. Practical Methods of Thermal Insulation Used for Constructing Buildin
      8.3: Convection
      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
      8.4: 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
      8.5: Vacuum Flask (Practice Test)
      Vacuum Flask
    1. Vacuum Flask
      514 views
      2. Exothermic and Endothermic Changes
    2. Exothermic and Endothermic Changes
      440 views
      3. Expansions of Solids
    3. Expansions of Solids
      39 views
      4. Expansion of Gases
    4. Expansion of Gases
      534 views
      5. Expansion of Liquids
    5. Expansion of Liquids
      1003 views

    Chapter 9 Dispersion of Light ( 20 videos)  (Practice Test)

      9.1: Refraction of Light (Practice Test)
      Light
    1. Light
      710 views
      2. Refraction of Light
    2. Refraction of Light
      564 views
      9.2: Laws of Refraction (Practice Test)
      Laws of Refraction
    1. Laws of Refraction
      176 views
      2. Refractive Index
    2. Refractive Index
      754 views
      9.3: Real and Apparent Depth
      Real And Apparent Depth
    1. Real And Apparent Depth
      803 views
      9.4: Critical Angle
      Critical Angle
    1. Critical Angle
      1166 views
      9.5: Total Internal Reflection (Practice Test)
      Total Internal Reflection
    1. Total Internal Reflection
      244 views
      2. Applications of Total Internal Reflection
    2. Applications of Total Internal Reflection
      1601 views
      3. Periscope
    3. Periscope
      558 views
      4. Mirage
    4. Mirage
      215 views
      5. Fish Eye View
    5. Fish Eye View
      987 views
      9.6: Dispersion of Light (Practice Test)
      Dispersion of Light
    1. Dispersion of Light
      568 views
      2. Rainbow Formation
    2. Rainbow Formation
      306 views
      9.7: Colours of Light
      Colours of Light
    1. Colours of Light
      316 views
      9.8: Colours of Objects (Practice Test)
      Colours of Objects
    1. Colours of Objects
      386 views
      2. Types of Mirrors
    2. Types of Mirrors
      829 views
      3. Image Formation In Concave Mirrors
    3. Image Formation In Concave Mirrors
      190 views
      4. Image Formation In Convex Mirrors
    4. Image Formation In Convex Mirrors
      522 views
      5. Usage of Concave Mirror
    5. Usage of Concave Mirror
      853 views
      6. Usage of Convex Mirror
    6. Usage of Convex Mirror
      1509 views

    Chapter 10 Sound Waves ( 17 videos)  (Practice Test)

      10.1: Waves and their Types (Practice Test)
      Sound
    1. Sound
      1461 views
      2. Speed of Sound in Different Materials
    2. Speed of Sound in Different Materials
      840 views
      3. Transverse Waves
    3. Transverse Waves
      1579 views
      4. Longitudinal Waves
    4. Longitudinal Waves
      972 views
      10.2: Wavelength, Amplitude, Frequency and Speed (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
      5. Basic Physical Quantities and Their SI Units
    5. Basic Physical Quantities and Their SI Units
      10.3: Pitch and Loudness (Practice Test)
      Pitch of Sound
    1. Pitch of Sound
      6376 views
      2. Pitch of Sound
    2. Pitch of Sound
      4356 views
      3. Loudness of Sound
    3. Loudness of Sound
      989 views
      10.4: Audible Frequency Range (Practice Test)
      Audible Frequency Range
    1. Audible Frequency Range
      227 views
      2. Sounds Produced By Different Musical Instruments
    2. Sounds Produced By Different Musical Instruments
      262 views
      10.5: Application of Different Sounds (Practice Test)
      Applications of Different Sounds
    1. Applications of Different Sounds
      97 views
      2. Mechanical and Electromagnetic Waves
    2. Mechanical and Electromagnetic Waves
      4682 views
      3. Transverse and Longitudinal Waves
    3. Transverse and Longitudinal Waves
      9093 views

    Chapter 11 Circuits And Electric Current ( 30 videos)  (Practice Test)

      11.1: Flow of Electric Current (Practice Test)
      Electricity and Its Kinds
    1. Electricity and Its Kinds
      134 views
      2. Flow of Current
    2. Flow of Current
      189 views
      3. Circuit Diagrams
    3. Circuit Diagrams
      61 views
      11.2: Types of Electric Circuits (Practice Test)
      Circuit Diagrams
    1. Circuit Diagrams
      61 views
      2. Advantages of A Parallel Circuit Over A Series Circuit
    2. Advantages of A Parallel Circuit Over A Series Circuit
      318 views
      11.3: The Circuits Used For Different Purposes
      Different Purposes of Electrical Circuits
    1. Different Purposes of Electrical Circuits
      20 views
      11.4: Energy Transfer In an Electrical Circuit
      Energy Transfer In An Electrical Circuit
    1. Energy Transfer In An Electrical Circuit
      1511 views
      11.5: Effects of Electric Current (Practice Test)
      Heating Effect of Current
    1. Heating Effect of Current
      58 views
      2. Chemical Effect of Current
    2. Chemical Effect of Current
      1269 views
      3. Magnetic Effect of Current
    3. Magnetic Effect of Current
      265 views
      4. Uses of Magnets And Electromagnets
    4. Uses of Magnets And Electromagnets
      85 views
      5. Magnets and Magnetic Materials
    5. Magnets and Magnetic Materials
      131 views
      6. Magnetic Field
    6. Magnetic Field
      143 views
      7. Advantages of Electromagnets
    7. Advantages of Electromagnets
      168 views
      8. Electromagnet
    8. Electromagnet
      9. Electromagnetic Devices (Electric Bell)
    9. Electromagnetic Devices (Electric Bell)
      10. Electromagnetic Devices ( Electric Motor)
    10. Electromagnetic Devices ( Electric Motor)
      11.6: Measuring Current, Voltage And Resistance (Practice Test)
      Measuring Current
    1. Measuring Current
      77 views
      2. Electric Current
    2. Electric Current
      112 views
      3. Potential Difference
    3. Potential Difference
      306 views
      4. Measuring Resistance
    4. Measuring Resistance
      97 views
      5. Relationship Between Voltage And Resistance (Ohm's Law)
    5. Relationship Between Voltage And Resistance (Ohm's Law)
      166 views
      11.7: Electrical Hazards and Safety
      Why is Electricity Dangerous?
    1. Why is Electricity Dangerous?
      47 views
      11.8: Safety Devices (Practice Test)
      Safety Devices To Avoid Electrical Hazards
    1. Safety Devices To Avoid Electrical Hazards
      80 views
      2. More on Safety Devices To Avoid Electrical Hazards
    2. More on Safety Devices To Avoid Electrical Hazards
      60 views
      3. Functions of Bicycle
    3. Functions of Bicycle
      74 views
      4. Speed and its Measurement
    4. Speed and its Measurement
      5. Force
    5. Force
      47 views
      6. Types of Force
    6. Types of Force
      463 views
      7. Action And Reaction And Their Examples
    7. Action And Reaction And Their Examples
      190 views

    Chapter 12 Investigating Space ( 17 videos)  (Practice Test)

      12.1: What Is Beyond Our Solar System (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
      12.2: Stars, Stars Distances, Galaxies and Milky Way (Practice Test)
      Stars
    1. Stars
      128 views
      2. Galaxies
    2. Galaxies
      311 views
      3. Milky Way Galaxy
    3. Milky Way Galaxy
      201 views
      12.3: Constellations (Practice Test)
      Constellations
    1. Constellations
      136 views
      12.4: Looking At Stars
      Looking At Stars
    1. Looking At Stars
      27 views
      12.5: Precautions to Observe Sun
      Safety Tips For Observing The Sun
    1. Safety Tips For Observing The Sun
      63 views
      12.6: The Life of Stars (Practice Test)
      Birth Of A Star
    1. Birth Of A Star
      102 views
      2. Death Of A Star
    2. Death Of A Star
      77 views
      3. Black Holes
    3. Black Holes
      147 views
      4. Importance of Gravitational Force
    4. Importance of Gravitational Force
      5. The Moon and the Tides
    5. The Moon and the Tides
      6. Earth's Rotation and Revolution
    6. Earth's Rotation and Revolution
      7. Seasons in Northern and Southern Hemispheres
    7. Seasons in Northern and Southern Hemispheres
      8. Seasons in Northern and Southern Hemispheres (continued)
    8. Seasons in Northern and Southern Hemispheres (continued)
      9. What Are Constellations?
    9. What Are Constellations?