Topics
Natural Resources – Air, Water and Land
- Natural Resources
- Atmosphere and Its Layers
- Air Around Us
- Composition and Components of Air
- Importance of Air
- Air Pollution and Its Causes
- Water: Our Lifeline
- Availability of Water
- Composition of Water
- Importance of Water
- Scarcity of Water
- Land
- Soil Formation
- The Importance of Conserving Earth’s Natural Resources
The Living World
Diversity in Living Things and Their Classification
Disaster Management
Substances in the Surroundings –Their States and Properties
Substances in Daily Use
Nutrition and Diet
- Nutrients and Nutrition
- Component of Food
- Carbohydrates
- Diseases Due to Deficiency of Carbohydrates
- Fats (Lipids)
- Diseases Due to Deficiency of Fats
- Proteins
- Diseases Due to Deficiency of Proteins
- Vitamin and Minerals
- Diseases Due to Deficiency of Vitamin
- Diseases Due to Deficiency of Minerals
- Fibre
- Diseases Due to Deficiency of Fibre
- Water
- Diseases Due to Deficiency of Water
- A Balanced Diet
- Nourishment and Malnutrition
- Food Adulteration
Our Skeletal System and the Skin
Motion and Types of Motion
Force and Types of Force
Work and Energy
- Force, displacement and work
- Energy
- The relationship between work and energy
- Forms of Energy
- Mechanical Energy
- Power Plants Based on Thermal Energy
- Light Energy
- Sound energy
- Chemical Energy
- Transformation of Energy
- Energy Resources
- Conventional energy resources or non-renewable energy resources
- Non-conventional energy resources or renewable energy resources
- Energy saving and green energy
Simple Machines
Sound
Light and the Formation of Shadows
Fun with Magnets
The Universe
- Introduction
- Causes of Flood
- Effects of Floods
- Prevention of Flood
Introduction:
Floods are a common natural disaster that happens all over the world. A flood occurs when there is too much rain in a short period, causing water to overflow onto land that is usually dry.
Causes of Flood:
- Excessive Rainfall: When there is heavy rainfall in the same place for a long time, rivers cannot hold all the water. The water overflows the riverbanks and spreads to nearby areas, causing a flood.
- Poor Drainage in Cities: In big cities, the drainage system sometimes cannot handle heavy rain. This causes gutters and drainage lines to get clogged, which leads to water overflowing onto roads and entering houses.
Effects of Floods:
- Loss of life
- Damage to property
- Soil erosion
- Destruction of crops
- Water contamination
- Spread of diseases
- Displacement of people
- Economic loss
Prevention of Floods:
- Construction of small dams in mountainous regions
- Construction of percolation tanks
- Making river beds flat
- Cultivation of new forests
- Connecting rivers
- Rainwater Harvesting
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