Animals

ANIMALS

IMPORTANT TERMS

Adaptation - Changes in feature and behaviour of an organism that help it to survive in its habitat is called adaptation.

Habitat - The place where an animal lives, feeds and reproduces is called its habitat.

Camouflage - Camouflage is the ability to blend in with the surroundings to be able Read more...

Food and Health

FOOD AND HEALTH

IMPORTANT TERMS

Vaccination - Vaccination is the process of injecting traces of organism into the body to protect against a particular disease.

Antibiotics – Powerful medicines that fight bacterial infections.

Immunity - Ability of an organism to resist a particular infection.

FOOD CLASSIFICATION

Carbohydrates – Energy giving – Daily energy – Cereals, Sugar, Read more...

Air and Water

AIR AND WATER

IMPORTANT TERMS

Atmosphere – The atmosphere is the blanket of gases which surrounds Earth. It is held near the surface of the planet by Earth's gravitational attraction.

Humidity – Humidity is the amount of water vapour in the air. Water vapour is the gaseous state of water and is invisible. Read more...

Plants

PLANTS

IMPORTANT TERMS

Photosynthesis – Photosynthesis is the process by which green plants use sunlight to synthesize nutrients from carbon di oxide and water and generates oxygen as a by -product.

Germination – Germination is the process by which a seed produces a new plant.

Transpiration - Transpiration is process where plants absorb water Read more...

Globe and Maps

GLOBE AND MAPS

MAPS

Representation of Earth or its regions in –

• Three Dimensions         – Globe
• Two Dimensions             – Maps
  • Collection of Maps - Atlas
  • Art of making Maps – Cartography

Elements of Maps – Represent different information about the area on map.

• Direction – Compass on map to show direction or Top of the map is Read more...

States of Matter

IMPORTANT TERMS

Matter-                                  Anything that has a mass and occupies space is called matter.

Volume-                     The amount of space occupied by something is called volume. Volume of a liquid is measured by an instrument called graduated Read more...

Natural Resources

IMPORTANT TERMS

Soil Profile                   Vertical section of the layers of the soil.

Weathering                  Breaking up of rocks by the action of wind, water, climatic changes etc.

Deforestation               Cutting down of trees.

Afforestation                The process of establishing forests in areas that have never been forested.

Reforestation               The restoration of forests in areas where forests were removed.

Ores                            Read more...

Safety and First Aid

IMPORTANT TERMS

First Aid                  The immediate help given to an injured person.

Fracture                  A break or crack in a bone.

Rabies                     A disease caused in humans due to bites of infected animals.

Fire Extinguisher     A device used to put off fires.

Antirabies               A vaccine given when a person is bitten by an infected Read more...

Work, Force and Energy

IMPORTANT TERMS

Force                       A push or a pull acting on an object.

Friction                    The force that tries to stop the sliding movement of objects across a surface.

Energy                     The ability to do work.

Gravity                   The force that pulls everything towards the centre of the Earth.

Magnetism              The pull or push applied by a magnet Read more...

Our Universe

OUR UNIVERSE

IMPORTANT TERMS

Core                            – The innermost layer of the Earth.

Mantle                         – The middle layer of the Earth.

Crust                           – The outermost layer of Earth.

Corona                        – The layer of air around the Sun.

Solar Eclipse                – When Sun, Moon and Earth come in a straight line and Moon casts a shadow on Earth.

Lunar Read more...