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Sound Sound Sound
Chapter 1 - Sound
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12 Topic(s)

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Noise_Pollution Noise Pollution

1. Noise Pollution
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Sound_Needs_A_Medium_For_Propagation Sound Needs A Medium For Propagation

2. Sound Needs A Medium For Propagation
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Sound-Produced-by-Humans Sound Produced by Humans

3. Sound Produced by Humans
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How-Sound-is-Produced How Sound is Produced

4. How Sound is Produced
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Audible-Sound Audible Sound

5. Audible Sound
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Noise-and-Music Noise and Music

6. Noise and Music
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Applications-of-Ultrasound Applications of Ultrasound

7. Applications of Ultrasound
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Range-of-Hearing Range of Hearing

8. Range of Hearing
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Sonar Sonar

9. Sonar
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Structure-of-Human-Ear Structure of Human Ear

10. Structure of Human Ear
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Characteristics-of-a-sound-wave Characteristics of a sound wave

11. Characteristics of a sound wave
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Sound-needs-a-medium-to-travel Sound needs a medium to travel

12. Sound needs a medium to travel
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Friction Friction Friction
Chapter 2 - Friction
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9 Topic(s)

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Lwc_Friction Lwc Friction

1. Lwc Friction
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Factor_Affecting_Friction Factor Affecting Friction

2. Factor Affecting Friction
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Increasing-and-Reducing-Friction Increasing and Reducing Friction

3. Increasing and Reducing Friction
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Wheels-Reduce-Friction Wheels Reduce Friction

4. Wheels Reduce Friction
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Fluid-Friction Fluid Friction

5. Fluid Friction
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Force-of-Friction Force of Friction

6. Force of Friction
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Reducing-Friction-Through-Body-Shape Reducing Friction Through Body Shape

7. Reducing Friction Through Body Shape
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Friction-Necessary-Evil Friction Necessary Evil

8. Friction Necessary Evil
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Characteristics-of-Friction Characteristics of Friction

9. Characteristics of Friction
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Some Natural Phenomena Some_Natural_Phenomena Some Natural Phenomena
Chapter 3 - Some Natural Phenomena
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Earthquakes-Natural_Calamities Earthquakes-Natural Calamities

1. Earthquakes-Natural Calamities
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Charging-by-Rubbing Charging by Rubbing

2. Charging by Rubbing
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Light Light Light
Chapter 4 - Light
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9 Topic(s)

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Reflected_Light_Can_Be_Reflected_Again Reflected Light Can Be Reflected Again

1. Reflected Light Can Be Reflected Again
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Multiple_Images Multiple Images

2. Multiple Images
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Lenses 15.1 Lenses.

3. 15.1 Lenses.
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PROPERTIES-OF-LIGHT 15.1 Properties of Light.

4. 15.1 Properties of Light.
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Sunlight---White-or-Coloured 15.1 Sunlight - White or Coloured.

5. 15.1 Sunlight - White or Coloured.
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Regular-and-Diffused-Reflection Regular and Diffused Reflection

6. Regular and Diffused Reflection
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Visually-impaired-persons-can-read-and-write Visually impaired persons can read and write

7. Visually impaired persons can read and write
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Refractive-Index Refractive Index

8. Refractive Index
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Dispersion-of-light Dispersion of light

9. Dispersion of light
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Stars and the Solar System Stars_and_the_Solar_System Stars and the Solar System
Chapter 5 - Stars and the Solar System
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1 Topic(s)

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Moon-and-its-Phases Moon and its Phases

1. Moon and its Phases
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Force And Pressure Force_And_Pressure Force And Pressure
Chapter 6 - Force And Pressure
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Force_Can_Change_The_State_Of_Motion Force Can Change The State Of Motion

1. Force Can Change The State Of Motion
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Force_A_Push_Or_Pull Force A Push Or Pull

2. Force A Push Or Pull
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Pressure Pressure

3. Pressure
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Non-Contact_Force Non-Contact Force

4. Non-Contact Force
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Contact-Force Contact Force

5. Contact Force
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Atmospheric-Pressure Atmospheric Pressure

6. Atmospheric Pressure
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Pressure-Exerted-by-Liquids-and-Gases Pressure Exerted by Liquids and Gases

7. Pressure Exerted by Liquids and Gases
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Source Of Energy Source_Of_Energy Source Of Energy
Chapter 7 - Source Of Energy
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Solar_Power Solar Power

1. Solar Power
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Solar-Power Solar-Power

2. Solar-Power
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