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24
Astronomy
6th Grade
02/23/2012

Additional Astronomy Flashcards

 


 

Cards

Term
asteroids
Definition
a large solid object made of rock and metal.
Term
asteroid belt
Definition
the group of asteroids found between Mars and Jupiter
Term
comets
Definition
*made of gas, ice and dust
*has a bright fiery head and a long tail of light
*comets have very large obits and travel to the edge of the solar system
Term
the sun
Definition
a star made of hot explosive gases
Term
planet
Definition
large solid object that travels around the sun (a star) on a specific path called an orbit
Term
solar system
Definition
our sun and eight planets
Term
orbit
Definition
curved path the planets take as they travel around the sun
planets close to the sun have smaller orbits
Term
gravity
Definition
a force that works between the sun and planets to keep the planets in place
Term
inner planets
Definition
mercury
venus
earth
mars
Term
outer planets
Definition
jupiter
saturn
uranus
neptune
Term
big bang theory
Definition
explosion that resulted in the formation of universe ( a theory )
Term
astronomer
Definition
person who studies astronomy
Term
sunspots
Definition
a dark area on the sun
it is darker because it is cooler than the areas around it
Term
corona
Definition
the outer layer of the sun's atmosphere
Term
revolves
Definition
earth's movement around the sun-takes one year
each planet has a different number of days to make up its year
Term
rotation
Definition
the spinning of a planet on its axis to create day and night
Term
supernova
Definition
the explosion of a dying supergiant star
Term
equator
Definition
an imaginary line that separates the northern hemisphere from the southern hemisphere
Term
axis
Definition
an imaginary line through the center of the earth at the north and south poles-
Term
tilt
Definition
the earth is tilted on its axis that is why we have seasons
Term
universe
Definition
all of space and everything in it
Term
milky way
Definition
the name of our galaxy
Term
galaxy
Definition
a bright, giant group of stars
Term
elliptical
Definition
shape of the orbits in our solar system-like an egg
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