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science vocabulary study guide
science
16
Science
3rd Grade
01/20/2016

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Term
axis
Definition
an imaginary line around which a sphere,like
a planet rotates
Term
cardinal directions
Definition
the four main directions;north,south,east,west
Term
day
Definition
the time between sunrise and sun sunset on
earth when it is light
Term
horizon
Definition
the apparent boundary between earth's when surface and the sky
Term
night
Definition
the time between sunset and sunrise on earth when it is dark
Term
predictable
Definition
to estimate accurately in advance based on a pattern or previous knowledge
Term
shadow
Definition
the dark area behind an object that blocks light
Term
solar system
Definition
the sun ,the eight planets,and other objects that orbit it
Term
sun
Definition
the star around which earth and other planets orbit
Term
sunrise
Definition
the time of day when the sun is coming over the horizon in east
Term
sunset
Definition
the time of day when the sun is going below the the horizon in the east
Term
rotate
Definition
to turn an axis
Term
copass
Definition
an instrument for locating directions on earths surface using a magnetic needle that points toward the north
Term
season
Definition
the four times during the year that bring predictable weather conditions to a region on earth ;the four of them are spring ,summer, fall,and winter
Term
star
Definition
the huge sphere of hydrogen and helium that radiates heat and light ;the sun is a star
Term
planet
Definition
a large ,celestial body orbiting a star
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