Worksheet For CBSE Class 8 Science

Crop Production And Managment-Introduction

• Introduction

• Crop and Its Types

• Basic Practices of Crop Production

• Preparation Of Soil

• Agriculture Implementation

• Plough

• Cultivator

• Sowing

Crop Production And Managment-Fertilizers

• Adding Manure And Fertilizers

• Irrigation

• Protection From Weeds

• Harvesting

• Storage

• Food From Animals

Microorganism Friend Or Foe-Microorganisms

• Microorganisms

• Where do Microorganisms Live?

• Microorganisms and Us

Microorganism Friend Or Foe-Harmful Microorganisms

• Harmful Microorganisms

• Food Preservation

• Nitrogen Fixation

• Nitrogen Cycle

Synthetic Fibres And Plastics-Types of Synthetic Fiber

• Introduction to Synthetic Fibres

• Types of Synthetic Fibre

• Characteristics Of Synthetic Fibres

Synthetic Fibres And Plastics-Plastics

• Plastics

• Plastics as Materials of Choice

• Plastics and the Environment

Materials Metals And Non Metals-Physical Properties Of Metals And Non Metals

• Introduction

• Physical Properties Of Metals And Non-Metals

Materials Metals And Non Metals - Chemical Properties Of Metals And Non Metals

• Chemical Properties Of Metals And Non-Metals

• Use Of Metals And Non-Metals

Coal And Petroleum-Introduction

• Introduction

• Coal

Coal And Petroleum-Petrol

• Petroleum

• Natural Gas

• Some Natural Resources are Limited

Combustion And Flame - Combustion

• Introduction

• Combustion

• How Do we Control Fire

Combustion And Flame- Types of Combustion

• Types Of Combustion

• Flame

• Structure of a Flame

• Fuel

• Fuel Efficiency

• Burning of Fuel Leads to Harmful Products

Conservation Of Plants And Animals-Deforestation

• Introduction

• Deforestation And It's Causes

• Consequences Of Deforestation

• Conservation Of Forest And Wildlife

• Biosphere Reserve

• Flora Fauna

• Endemic Species

Conservation Of Plants And Animals-Wildlife Sanctuary

• Wildlife Sanctuary

• National Park

• Red Data Book

• Migration

• Recycling Of Paper

• Reforestation

Cell Structure And Function-Introduction

• Introduction

• Discovery of Cell

• The Cell

• Organisms Show Variety in Cell Number, Shape & Size

Cell Structure And Function - Cell Structure

• Parts of the Cell

• Comparison Of Plant And Animal Cell

Reproduction In Animals - Fertilization

• Introduction

• Sexual Reproduction

• Fertilisation

• Asexual Reproduction

Reaching The Age Of Puberty - Adolescence And Puberty

• Introduction

• Adolescence And Puberty

• Changes At Puberty

Reaching The Age Of Puberty - Secondary Sexual Character

• Secondary Sexual Character

• Role Of Hormones In Initiating Reproductive Function

• Reproductive Phase Of Life In Humans

Reaching The Age Of Puberty - Sex of baby

• How Is The Sex of Baby Determined

• Hormones other than Sex Hormones

• Role Of Hormones In completing History of Frog And Insects

• Reproductive Health

Force And Pressure - Introduction

• Introduction

• Force- A Pull Or A Push

• Forces are Due To An Interaction

• Exploring Force

Force And Pressure - Force Can Change State Of The motion

• A Force Can Change The State Of Motion

• Force Can Change The Shape Of An Object

• Contact Forces

Force And Pressure - Non contact force

• Non-Contact Forces

Force And Pressure - Pressure

• Pressure

• Pressure Exerted By Liquids And Gases

• Atmospheric Pressure

Friction - Introduction

• Introduction

• Force Of Friction

• Factors Affecting Friction

• Friction: A Necessary Evil

• Increasing And Reducing Friction

• Wheels Reduce Friction

• Fluid Friction

Sound and Human Ear

• Introduction

• Sound Is Produced By A Vibrating Body

• Sound Produced By Humans

• Sound Needs a Medium for Propagation

• Humans Hear Through Ear

Sound - Noise And Music

• Amplitude, Frequency and Time Period of a Vibration

• Audible And Inaudible Sound

• Noise And Music

• Noise Pollution

Chemical Effects Of Electric Current

• Introduction

• Do Liquids Conduct Electricity?

• Chemical Effect Of Electric Current

• Electroplating

Some Natural phenomena

• Introduction

• Lightening

• Charging By Rubbing

• Types Of Charges and Their Interaction

• Transfer of Charge

• Lightning Safety

• Earthquakes

Light - Reflection

• Introduction

• Laws Of Reflection

• Regular And Diffused Reflection

• Reflected Light can Be Reflected Again

Light -Eye and Images

• Multiple Images

• Sunlight

• Eye

• Visually Challenged Person Can Read And Write

Stars And The Solar System - The Moon and The stars

• Introduction

• The Moon

• The Stars

• Constellations

Stars And The Solar System - The Solar System

• The Solar System

• Some Other Members Of Solar System

Pollution Of Air And Water - Pollution

• Pollution

• Air Pollution

• How Does Air Get Polluted

• Case Study- The Taj Mahal

• Greenhouse Effect

• What Can Be Done

• Water Pollution

• How Does Water Get Polluted

• What is Potable Water & How is Water Purified?