Page 129 - ICSE Science 3 : E-book

Freezing: The process during which a liquid Mass: The quantity that tells how heavy or
changes into a solid by cooling or decreased
light an object is
temperature
Matter: Anything that has mass and occupies
Fruit: Part of a plant that develops from a fl ower
space
and contains seeds inside it
Melting: The process during which a rise in
temperature changes a matter from solid to
Gases: Substances that are usually invisible, liquid
and do not have a fi xed shape or size
Monocot seed: Seed that contains only a single
Germination: The process by which a seed
cotyledon inside it
grows into a new plant

Natural resource: Useful things that occur
Habitat: A place occupied by a particular
naturally in the environment
animal or plant to live in
Nocturnal insects: Insects that are active during
Hydroelectric energy: The energy that we get
the night time
from the running water
Non-living things: Things that do not have life
in them
Impurities: Substances that make something
Non-renewable sources of energy: The energy
dirty or impure
sources that are found in limited quantity and
Insects: Very small animals with six legs
cannot be produced again
Insoluble impurities: Impurities that are not
Nut: A particular kind of edible seed that usually
soluble in water
has a hard shell or covering around it
Insoluble substances: Substances that do not
dissolve in water at all
Organ: Part of the body that has a particular
Internal organs: Organs that are located inside function to perform
the body which we cannot see
Organ system: A group of organs that work
together to perform a particular function
Jaggery: A type of raw dark brown sugar made
from sugar cane juice
Personal hygiene: The act of taking good care
of our health by keeping our body clean
Lamina: The fl at or broad part of a leaf
Petal: The soft and brightly coloured part of a
Lifespan: A period of time for which a living fl ower
thing lives
Petiole: A structure that links the leaf to the
Liquids: Substances that do not have a fi xed plant's stem or branch
shape or size, and fl ows easily

Living things: Things that have life in them
Rainwater harvesting: The collection and
Lungs: Two spongy bag-like structures that are storage of rainwater in man-made structures
located in the chest cavity for use in future

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