Elementary Academic Words

Words for students from kindergarten to grade 8, each grade has 4 lists: art, math, science, and social. They are essential vocabulary for elementary academic classes.

Grade 3: Online Card - Science
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absorb
assimilate or incorporate; suck or drink up; occupy full attention
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adaptations
change in behavior of a person or group in response to new or modified surroundings
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chlorophyll
any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms
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clay
very fine-grained soil that is plastic when moist but hard when fired
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compost
a mixture of decaying vegetation and manure; used as a fertilizer
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decay
decompose; break sown; disintegration; rottenness; decline; worsen; decadence
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germinate
cause to sprout or grow; come into existence
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gravity
seriousness; solemn and dignified feeling; natural force between two massive bodies
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humus
partially decomposed organic matter; the organic component of soil
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inorganic
lacking the properties characteristic of living organisms; relating or belonging to the class of compounds not having a carbon basis
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joints
junction by which parts or objects are joined together
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ligament
any connection or unifying bond; a sheet or band of tough fibrous tissue connecting bones or cartilages or supporting muscles or organs
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locomotion
self-propelled movement; power or ability to move
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moon phases
Lunar phase or phase of the moon refers to the shape of the illuminated portion of the Moon as seen by an observer, usually on Earth
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muscle
authority or power or force, especially when used in a coercive way; one of the contractile organs of the body
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nutrients
source of nourishment, especially a nourishing ingredient in a food
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organic
simple and healthful and close to nature
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planets
star other than a fixed star; star revolving in an orbit
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pollinate
fertilize by transferring pollen
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protection
the activity of protecting someone or something; a covering that is intend to protect from damage or injury
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reflect
throw or bend back light from a surface; give back or show an image of; mirror
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reproduction
act of making copies
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revolution
act of revolving; motion of body round a fixed point or line; rotation; total or radical change; fundamental change in political organization
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rotation
revolution; act of rotating as if on an axis
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sand
a loose material consisting of grains of rock or coral
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shadow
an unilluminated area
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skeleton
framework; internal supporting structure that gives an artifact its shape
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solar system
the sun with the celestial bodies that revolve around it in its gravitational field
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stars
the topology of a network whose components are connected to a hub
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support
the act of bearing the weight of or strengthening
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survival
existence; remaining alive
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variable
factor; something that is likely to vary; changeable; inconstant