Topics
Nutrition in Plants
Nutrition in Animals
- Different Ways of Taking Food
- Human Digestive System
- The Mouth and Buccal Cavity
- The Teeth and Its Structure
- The Salivary Glands
- The Food Pipe/Oesophagus
- The Stomach
- The Small Intestine
- Pancreas (Islets of Langerhans)
- Absorption of Food
- The Large Intestine
- Assimilation of Food
- Liver
- Digestion in Grass-eating Animal
- Feeding and Digestion in Amoeba
Heat
- Heat
- Heat Exchange
- The Temperature and a Thermometer
- Thermometer and Its Types
- Measuring Temperature
- Transfer of Heat
- Conduction
- Convection
- Radiation
- Kinds of Clothes Wear in Summer and Winter
Fibre to Fabric
- Fibre
- Fabrics
- Animal Fibres: Wool
- Animal Fibre: Silk
- Fibre to Yarn to Fabric
Acids, Bases and Salts
- Acids
- Bases (Alkalis)
- Indicators
- Types of Double Displacement: Neutralization Reaction
- Neutralization Reactions in Our Daily Life
- Similarities and Differences Between Acids and Bases
Physical and Chemical Changes
- Classification of Change: Physical Changes
- Chemical Reaction
- Experiment of Chemical Change
- Corrosion of Metals
- Crystallisation Method
Respiration in Organisms
- Cellular Respiration
- Mechanism of respiration-Breathing
- Human Respiratory System
- Breathing in Other Animals
- Breathing Under Water
- Respiration in Plant
Transportation in Animals and Plants
- Blood
- Composition of Blood > Cellular Elements: Red Blood Cells (Erythrocytes)
- Composition of Blood > Cellular Elements: White Blood Cells (Leukocytes)
- Composition of Blood > Cellular Elements: Blood Platelets (Thrombocytes)
- Blood Vessels
- Heart Beat
- Blood Circulatory System
- Human Heart
- Circulation of Blood in the Heart (Functioning of Heart)
- Excretion
- Human Excretory System
- Transport System in Plants
- Complex Permanent Tissues
- Complex Permanent Tissue: Phloem Structure and Function (Conducting Tissue)
- Complex Permanent Tissue: Xylem Structure and Function (Conducting Tissue)
- Concept of Transpiration
Weather, Climate and Adaptations of Animals to Climate
- Weather and Climate
- Climate
- Climate and Adaptation
- Adaptations and Its Types
- Adaptation in Animals
- Adaptation in animals of snowy regions
- Adaptations in Tropical Rainforests
Reproduction in Plants
- Sexual Reproduction in Plants
- Fruit
- Dispersal of Seeds
Wind Storms and Cyclones
- Atmospheric Pressure
- High Speed Winds Are Accompanied by Reduced Air Pressure
- Air Expands on Heating
- Wind Currents Are Generated Due to Uneven Heating on the Earth
- Thunderstorms
- Cyclones
- Thunderstorm and Cyclone: Destruction Causes, Safety Measures and Role of Advanced Technology
Motion and Time
- Force and Motion
- Speed
- Types of Speed
- Measurement of Time
- Devices for Measuring Time
- Simple Pendulum
- A Time Period of Oscillation and Frequency
- Measuring Speed
- Displacement - Time Graph Or Distance - Time Graph
Soil
- Properties of Soil
- Soil Profile
- Types of Soil
- Moisture in Soil
- Water Retention in Soil
- Soil and Crops
Electric Current and Its Effects
Light
- The propagation of light
- Reflection of Light
- Mirrors
- Plane Mirror
- Lateral Inversion
- Divergence and Convergence of Light
- Spherical Mirrors
- Formation of Image by Reflection: Real and Virtual Image
- Spherical Mirror > Concave Mirror
- Spherical Mirror > Convex Mirror
- Concept of Lenses
- Images Formed by Sperical Lenses
- Colour
- Prism
- Dispersion of Light
Forests: Our Lifeline
- Forests: Our Lifeline
- Forest Biome
- Classification of Plants
- The Oxygen Cycle
- Water Cycle
- Importance of Forests
Wastewater Story
- Water: Our Lifeline
- Sewage and Its Management
- Purification of Water
- Wastewater Treatment Plant (WWTP)
- Better Housekeeping Practices
- Controlling the Wastage of Water
- Sanitation and Disease
Water: A Precious Resource
- Water: Our Lifeline
- Availability of Water
- Water Cycle
- Sources of Water
- Scarcity of Water
- Distribution of Water in India
- Water Management (Conservation of Water)
- Fresh Water Management
- Controlling the Wastage of Water
- Scarcity of Water
Maharashtra State Board: Class 7
Transfer of heat:
When a hot object is placed near a cold object, the cold object becomes warm and the hot object cools down. This shows that heat always flows from the hot object to the cold object.
- Heat transfer means the movement of heat energy from one place or object to another.
- Heat always flows from a hot body to a cold body until both objects reach the same temperature (equilibrium).
For example,
- Holding a hot cup of tea warms your hands.
- A spoon left in hot soup becomes warm after a while.
