Skip Navigation Links
Glossary of Scientific Terms
Adaptation The process of adjustment to surroundings by animals and plants.
Aerial Animals Animals which spend most of their time in the air.
Amphibian Animals that live both on land and in water.
Apparent Weight The weight of an object in water.
Aquatic Plants Plants that grow in water.
Arboreal Animals Animals which live on the trees.
Atmosphere An envelop of air around the earth.
Basalt An igneous rock formed by lava, cooling on the earth’s surface.
Blood vessels Tubes that carry blood to different parts of the body.
Body building foods Foods that help us to grow and become strong.
Breathing The process of taking air into our lungs and releasing it out through nose or mouth.
Breeze Gentle wind.
Buds They are the parts of a plant which bloom into flowers.
Buoyant Force The upward force acting on an object in a liquid.
Carnivores Animals which eat the flesh of other animals.
Carvan A house on wheels.
Caterpillar Larva of a butterfly.
Cereals Certain grass—like plants that produce grains that can be eaten.
Cerebellum A part of brain that helps to control the movements during reflex action.
Cerebrum The largest part of the brain.
Chlorophyll Green pigment present in leaves.
Claws A pointed horny nail on an animal’s or bird’s foot.
Cleanliness The habit of staying clean.
Climbers Weak plants that need support to remain erect and climb.
Cloth Any material made from fibres.
Clouds A visible mass of condensed water vapour floating in the atmosphere.
Clouds A visible mass of condensed water vapour floating in the atmosphere.
Compound Mater made up of different kinds of atoms combined in fixed numbers.
Condensation Process in which water vapour changes into water on cooling.
Constellation Group of stars arranged in an interesting pattern.
Cooking The art or process by which food is made more digestible by heating.
Creepers Weak plants that grow along the ground.
Crown It is the part of a tooth above the gum.
Decantation Gently pouring a clear liquid into another vessel after sedimentation.
Deficiency Disease They are caused by lack of a particular vitamin or mineral.
Dentine It is a layer below the enamel, made of tough tissues.
Digestion It is a process by which the food we eat is changed into simple substances.
Dispersal Scattering things over a wide area.
Distillation Purification of water by changing it vapour by heating and cooling the vapour to obtain in pure water.
Domestic Animals Animals kept at home or in farms.
Downstroke Movement The movement of wings downward and forward.
Drainage A process or means of carrying off the waste water from the house.
Dye A substance used for colouring.
Earth Our own planet.
Enamel The outermost, hardest substance of a tooth.
Endangered Animals that are very few in numbers and may soon no longer exist.
Energy Ability to do work.
Energy giving foods Foods that give energy to work and play.
Evaporation Process in which water changes into water vapour on heating.
Exercise Any activity that makes our body healthy and strong.
Exosphere The outermost layer of the atmosphere of the earth.
Filtration Removing impurities through a filter paper.
First-Aid Immediate help given to the victim or to the injured.
Flightless Birds Birds which cannot fly.
Floating Ribs Two pairs of lower ribs which are not attached to the breast bone.
Flower The beautiful part of plant that produces seeds of fruits.
Footpath It is a pavement or a path on the side of road where the people walk.
Fracture A crack or break in a bone.
Freezing Water turning into ice when cooled.
Fruit The fleshy part of a plant that produces seeds.
Gale Very strong wind.
Gas A substance which does not have a fixed shape, fixed volume. It fills the entire space of the vessel.
Gemstones Mineral commonly used to make jewellery.
Geothermal Energy Energy from the earth.
Germination The change of a seed to a plant.
Germs Very small living things that can make us ill.
Gills They are used by fish to breathe under water.
Grains They are small, hard seeds. They are usually ground into flour to make bread.
Green plants Plants that have chlorophyll in their leaves.
Ground water Rainwater that seeps into the ground.
Habitat The home or natural environment of a living thing.
Hatching Emerging of young ones from eggs.
Health Condition of a person’s body and mind.
Herbivores Animals which eat plants.
Herbs Small and weak plants.
House A place where we live in.
House boat A house on a boat.
Igloo A house made of blocks of ice.
Impurities Substance that make water unfit for consumption.
Incubate Keeping eggs warm, usually by sitting on them.
Insecticides They are chemicals used to destroy harmful insects on plants.
Insectivorous Plants Plants which eat animals.
Insects Small animals having six legs.
Ionosphere The layer above the stratosphere which reflects radio waves back to the earth.
Joint It is the place where two or more bones meet.
Kilogram The standard unit of mass.
Lava Molten rock that reaches the earth’s surface and flow out through a volcanic vent.
Leaf The part that makes food for the plant.
Ligaments Tough tissues by which the bones are held together.
Liquid A substance which has a fixed volume but no fixed shape. It can flow.
Litre The standard unit of volume.
Living things Things which grow, feel, breathe, take food and move on their own.
Machines They help us to do a job and can make our work easier. Machines can also do things for us that we cannot do ourselves.
Maintenance The process of preserving.
Mammals An animals that gives birth to young ones and nourishes them with milk.
Matter Anything which takes up space.
Medulla The brain stem which connects the brain to the spinal cord.
Metre The standard unit of length.
Microbes They are very small living organisms which can be seen only with a powerful microscope.
Migration The movement of animals from one place to another to avoid the cold or to find food and water.
Mineral Material of which rocks are made.
Moon Looks like a big white ball which can be seen in the night sky.
Motor Nerves The nerves which carry messages from the brain.
Muscles Soft parts below the skin.
Nest A bird’s home.
Neurons The nerve cells which bind together to form a nerve.
Non-living things Things which do not grow, feel, breathe, take food and move on their own.
Nutrients Nourishing substances which help the body to grow.
Nymphs Young ones of an insect resembling the parents.
Omnivores Animals which eat both plants and animals.
Optic Nerve A nerve at the back of the retina.
Orbit It is the path followed by planets travelling around the sun.
Pebbles Small pieces of rocks.
Pet Animals Animals kept at home for our entertainment.
Photosynthesis The process by which green plants make food with the help of chlorophyll, water, sunlight and carbon dioxide.
Planets They are eight huge ball-shaped objects moving around the sun.
Posture It is the position in which we hold our body.
Potassium permanganate It is a chemical substance used to kill germs in water.
Preservation Preventing cooked or uncooked food from getting spoiled.
Protective foods Foods that protect you from falling sick.
Pull To draw an object towards oneself.
Pulleys They are wheels used with ropes to lift things.
Pulses Seeds of certain plants that can be eaten.
Push To move a thing forward.
Rainwater Water from rain.
Reflex Action The automatic actions for which we do not think before acting.
Reproduction Producing young one of their own kind the living being.
Rest To sleep, to refresh our body.
Ribs The long curved bones in the human body that form the rib cage.
Rock Solid material that comprises the earth’s crust.
Rodents Animals like rats, squirrels etc., which gnaw their foods
Root The part that is under the ground and fixes the plants in the soil.
Safety Staying away from harm.
Safety Rules Rules which you must follow to keep yourself safe.
Sanitation The system of disposal of sewage and refuse from the houses.
Satellite Heavenly bodies which revolve around the planet.
Scales They are thin overlapping plates, covering and protecting fish and reptiles.
Scratching Birds Birds that can scratch the ground with their claws for food.
Sedimentation Process in which the impurities settle down at the bottom.
Sediments The particles (soil or rock) which settle down in water.
Seed The part of the fruit that has a baby plant inside it.
Seedling A small baby plant coming out of a seed.
Sense organs Organs that help us to know the world around us. The five sense organs are skin, nose, eyes, ear and tongue.
Sensory Nerves The nerves which are connected to the sense organs.
Shadow Dark shape formed when an object blocks the light falling on it.
Shelter A place giving protection from heat, cold, rain and enemies.
Shrubs Small but strong plants.
Siphon A ‘U’ shaped tube used to raise a liquid from a container at a higher level and deliver it to a lower level.
Skeleton It is the framework of bones in the body.
Slate A metamorphic rock which splits into thin slices.
Sling A piece of long cloth or a bandage passing over the shoulder to support the fractured arm.
Smoke Particles of gas give out when something burns.
Soil Profile Sequence of layers of soil.
Solar Energy Energy from the sun.
Solar System The sun, eight planets and their moons together form our solar system.
Solid A substance which keeps its shape and volume fixed.
Space The place beyond the blanket of atmosphere.
Splint A piece of cardboard or sheet of newspaper used to hold a broken bone in its right position.
Stars The bright heavenly bodies that can be seen in the night sky.
Steam Vapour is formed when water boils.
Stem The main part of the plant above the ground from which leaves or flowers grow.
Stilt Houses Wooden houses built on raised platforms with sloping roofs.
Stomata Tiny openings lower side of the leaf.
Storm Fast and strong wind.
Stratosphere The layer above the troposphere.
Sun A big hot ball of fire.
Surface water Water in lakes, seas, ponds etc.
Synthetic Artificial fibres produced by man.
Talons Sharp claws of fish-eating birds.
Teeth A set of enamel-coated hard bone structures in the jaws of human and animals.
Temporary House A weak house made up of mud, straw, leaves etc.
Tendons The strong fibres by which the muscles are attached to the bones.
Tent A house made of cloth.
Terrestrial Plants Plants that grow on land
Thermometer An instrument used to measure temperature.
Thorn The sharp pointed small part on the stem.
Tides Rising and falling movements of the ocean water.
Traffic Signal An automatic signal, controlling road traffic by coloured lights.
Trees Big and strong plants
Troposphere The lowest layer of atmosphere.
Upstroke Movement The movement of wings upward and backward.
Ventilation A provision which causes air circulation freely in a room.
Veterinary Doctor A doctor which treats sick animals.
Victim Someone who has been attacked or injured.
Vitamins Chemical substances that are found in food. Our body needs them to stay healthy.
Wading Birds Birds that can walk through shallow water.
Water A precious natural resource
Water Filter We use it at home to filter drinking water.
Water Vapour It is formed when water gets heated.
Weather Condition of the air at a particular time.
Well A deep hole dug in the ground from which people get water.
Wild Animals Animals that live in Jungles and forests.
Wind Moving air.
Wings Parts that help animals to fly.
Wire-gauge A fine mesh of wires.
Zebra Crossing Lines made on the road used for crossing the road safely.
HelpdeskUser PolicyDisclaimer©2016. All Right Reserved. Goyal Brothers Prakashan