Page 143 - Viva ICSE Science 5 : E-book
P. 143
Omnivores: Consumers who feed on both Revolution: The movement of earth around the
plants and animals sun on its orbit
Opaque objects: Objects that do not allow light Rotation: The circular movement of the earth
to pass through them on its axis
Oral hygiene: The hygiene which involves
taking care of teeth and gums Scavengers: Consumers who feed on dead
plants and animals
Orbit: The fi xed path on which the earth moves
around the sun Screw: An inclined plane wrapped around a rod
spirally
Organ system: A group of organs that work
together to carry out a particular function Sedimentation: The settling down of heavy
particles at the bottom of the vessel
Petals: Brightly coloured and scented structures Sepals: Small, green, leaf-like structures that
that form corolla form calyx
Physical change: Any change in matter in which Sexual reproduction: Two parents (male and
no new substance is formed female) involved in producing a new individual
Pleasant sounds: Sounds which are harmonious, Skeletal muscles: The muscles that we use to
and make us feel happy and relaxed move around
Pollination: The transfer of pollen grains from Skeletal system: A rigid framework of bones
the anther to the stigma of a fl ower that provides support, shape and strength to
Potential energy: The energy possessed by a the body, and protects the internal organs
body due to its position Skeleton: The framework of all the bones
Producers/Autotrophs: Living things that can together
prepare their own food Skull: The bony framework of the head
Pulley: A simple machine made with a rope or Smooth muscles: The muscles which are
chain wrapped around a wheel
present in the internal organs of our body
Solar energy: The vast amount of energy
Recycling: Treating wastes to get materials that
obtained from the sun
can be reused
Solubility: Property of a substance to dissolve
Renewable energy sources: Energy sources that
in some other substance to form a mixture of
are present in large amounts and cannot be
uniform nature
used up completely
Solute: The substance which gets dissolved
Reproduction: The process by which living
organisms produce new individuals of their Solvent: The substance in which the solute
kind dissolves
129
