Science 8

Science
Course content
Note:
L - Lesson   A - Activity
1.1: Agricultural Practices  

01:09

2.1: Basic Practices of Crop Production  

00:40

3.1: Harvesting and Storage  

00:30

4.1: Irrigation  

01:37

5.1: Manure and Fertilizers  

00:29

6.1: Preparation of Soil  

01:32

7.1: Protection from Weeds  

00:44

1.1: Diseases  

01:17

2.1: Food Preservation  

02:58

3.1: Importance of Micro-organisms in our Daily Life  

01:53

4.1: Microbes Causing Disease in Humans  

00:32

5.1: Micro-Organisms Friend and Foe  

01:40

6.1: Nitrogen Cycle  

02:15

7.1: Transmission of Diseases Through the Carriers  

02:44

8.1: Where do Micro-Organisms live  

00:19

1.1: Merits And Demerits Of Synthetic Fibres  

2.1: Nylon Properties And Uses  

01:51

3.1: Plastic And The Environment  

00:53

4.1: Plastics and Their Types  

00:38

5.1: Polyester and Acrylic  

02:23

6.1: Properties And Uses Of Plastic  

02:18

7.1: Rayon Properties And Uses  

01:08

8.1: Synthetic Fibres  

01:03

9.1: Thermoplastics, Thermosetting Plastics and Elas  

02:03

1.1: Conduction of heat  

00:42

2.1: Conductor of Electricity  

00:43

3.1: Displacement reaction  

02:39

4.1: Malleability  

01:09

5.1: Reaction metals with water  

00:48

6.1: Reaction of Non-metal with oxygen  

01:21

7.1: Reaction With Air  

00:52

8.1: Reactions with Acids  

02:01

9.1: Reactions with Bases  

01:56

10.1: Sonority  

00:23

11.1: Uses Of Metals  

01:23

12.1: Uses of Non-metals  

00:51

1.1: Formation of Coal  

01:47

2.1: Inexhaustible Natural Resources  

01:10

3.1: Natural Gas  

00:45

4.1: Petroleum  

01:53

5.1: Products of Coal  

01:32

6.1: Some Natural Resources are Limited  

01:10

1.1: Combustible and Non-combustible  

00:38

2.1: Combustion  

01:08

3.1: Essential requirements for combustion  

01:05

4.1: Fuel and fuel efficiency  

00:35

5.1: Harmful Effects  

01:17

6.1: Ignition temperature  

01:29

7.1: Methods Used To Control Fire  

00:51

8.1: To Show the Presence of Wax Vapour in the Dark Inner Zone  

00:48

9.1: Types of Combustion  

01:36

1.1: Biosphere Reserve  

00:29

2.1: Consequences of Deforestation  

02:04

3.1: Conservation of Forest and Wildlife  

00:52

4.1: Deforestation and its Causes  

01:00

5.1: Endangered species  

00:46

6.1: Flora and Fauna  

00:54

7.1: Migration  

00:37

8.1: National Park  

00:21

9.1: Recycling and Reforestation  

01:26

10.1: Reforestation  

00:22

11.1: Species  

00:52

12.1: Wildlife Sanctuary  

00:39

1.1: Cell – The basic Unit of Life  

00:49

2.1: Discovery of Cells  

00:36

3.1: Organisms show Variety in Cell Number, Shape and Size  

00:45

4.1: Parts of the Cell - I  

02:49

5.1: Parts of the Cell – II  

01:51

6.1: Shape of Cells  

00:53

7.1: Size of Cells  

8.1: The Cell  

00:56

9.1: Types of Cell  

00:56

1.1: Asexual Reproduction-8  

00:58

2.1: Clonning  

02:20

3.1: Fertilization-8  

01:33

4.1: In Vitro Fertilization  

00:50

5.1: Reproduction  

01:00

6.1: Sexual Reproduction-8  

01:48

7.1: Types of fertilization  

00:42

8.1: Viviparous and Oviparous Animals  

01:02

1.1: Adolescence and Puberty  

01:19

2.1: Development of Sex Organs  

00:15

3.1: How is the Sex of the Baby Determined  

01:47

4.1: Increased Activity of Sweat and Sebaceous Glands  

00:19

5.1: Precautions to be taken  

01:04

6.1: Puberty  

00:40

7.1: Reaching Mental, Intellectual and Emotional Maturity  

00:26

8.1: Reproductive Health  

01:09

9.1: Reproductive Phase of Life in Humans  

01:37

10.1: Role of Hormones in Insects  

00:24

11.1: Role of Hormones  

02:19

12.1: Secondary Sexual Characters  

00:35

13.1: Voice Change  

00:37

1.1: A Force can Change the state of motion  

01:49

2.1: Exploring Forces  

02:17

3.1: Force – A Push or a Pull  

01:18

4.1: Forces are due to an interaction  

00:44

5.1: Non-contact forces  

02:58

6.1: Pressure exerted by gases  

01:56

7.1: Pressure Exerted by Liquid  

01:45

8.1: Pressure  

01:43

9.1: Types of Force  

01:33

1.1: Factors affecting friction  

02:20

2.1: Fluid friction  

01:08

3.1: Force of friction  

01:26

4.1: Friction A necessary evil  

02:14

5.1: Methods of increasing friction  

00:46

6.1: Methods of reducing friction  

01:07

7.1: Rolling Friction  

00:25

8.1: Static friction and sliding friction  

01:05

1.1: Different types of sound and range of sound  

01:47

2.1: Human Ears  

00:46

3.1: Properties of Sound – Amplitude and Frequency  

01:46

4.1: Sound needs a medium to propagate  

02:13

5.1: Sound produced by humans  

01:17

6.1: What is sound and How Sound is produced  

01:50

1.1: Chemical effects of current  

01:45

2.1: Electroplating  

02:44

3.1: Good and Poor Conductors of the Electricity  

02:07

4.1: Liquid conductors  

03:06

1.1: Lightning Safety  

00:57

2.1: Lightning  

01:04

3.1: Nature of electric Charges  

01:24

4.1: Transfer of Charges  

01:48

5.1: Types of charges and their interaction  

6.1: What causes an Earthquake  

02:53

1.1: Care of the eyes  

02:44

2.1: Human eye and its care  

02:49

3.1: Image formation by reflection  

02:25

4.1: Multiple Images  

03:03

5.1: Reflection and Its laws  

02:05

6.1: Regular and Diffused Reflection  

01:01

7.1: Sunlight – White or colored  

00:49

1.1: Celestial Objects  

00:20

2.1: Some Other Members of the Solar System  

01:53

3.1: The Moon  

01:33

4.1: The Solar System – Sun and Planets  

00:20

5.1: The stars  

02:34

1.1: Causes of Water Pollution  

01:00

2.1: Consequence of air pollution-Acid Rain  

00:46

3.1: Controls of air pollution  

00:34

4.1: Effects of Water Pollution  

00:39

5.1: Global Warming  

00:50

6.1: Greenhouse Effect  

00:46

7.1: Pollution  

02:42

8.1: Potable Water _ Purification of Water  

00:51

9.1: Water pollution  

00:33

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