Page 131 - Viva ICSE Science 4 : E-book
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Friction: A type of force that is exerted by the Magnetic force: Force exerted by a magnet
surface when an object moves across it that pulls some materials towards itself
Frictional force: Force exerted by a surface
Marshy area/Swamp: An area which is always
when an object moves across it wet or fl ooded
Mass: A property of matter that tells how light
Glucose: A type of sugar or heavy a particular object is
Gravitational force: Force that pulls every object Measurement: Process of fi nding out the size,
towards the centre of the earth length, quantity or degree of something
Gums: Soft tissue, surrounding the teeth and Minerals: Nutrients that help in the formation
holding it fi rmly in its place of bones, blood and teeth
Molars: Bigger and wider teeth having ridges,
Habitat: The place where particular type of located next to the premolars
plant or animal normally lives
Motion: The act of movement
Herbivores: Plant-eating animals
Muscular force: Force applied by muscles of
Hibernation: A sleeping pattern of some body
animals in which they sleep during winters
Non-luminous objects: Objects that refl ect
light of luminous objects
Incisors: Front fl at teeth having sharp edges
Nutrients: The components in food that help
Infl ate: Expand in size
our body to survive, grow and become strong
Inhalation: Process of breathing in air
Insoluble: Not able to dissolve Odourless: Without any smell
Oesophagus: Also known as food pipe, it
Kidneys: Filter and remove wastes, salts and helps to carry food and liquids from mouth to
extra water from the blood; also fi lter blood to stomach
produce urine
Omnivores: Animals that eat both plants and
fl esh of other animals
Length: Distance between the two ends of an Opaque: Materials through which light cannot
object pass at all
Liver: Produces digestive juice which helps in
digestion of food and absorption of nutrients
Permanent teeth: Also called adult teeth, starts
LPG: Liquefi ed Petroleum Gas appearing in place of temporary teeth from the
age of 6 or 7 years
Lubricants: Things which help in smoothening
the movement of objects Petiole: The part linking the leaf to the stem
Luminous objects: Objects that emit light of Photosynthesis: Process of making food by
their own green leaves
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