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Earth in Universe

Science- Ch 11, 17

TermDefinition
Asteroid Solid, rocky body that orbits the sun.
Astronomical unit (AU) Earth's average distance from the sun. Which is approximately 150 million kilometers (93 million miles)
Axis of rotation An imaginary line about which a turning body rotates
comet Body that produces a coma of gas and dust
corona outer layer of the sun's atmosphere
eclipse one object in space casts a shadow onto another
equinox sunlight shines equally on the NH and the SH
galaxy Billions of stars held together in a group by their own gravity
light year the distance light travels in one year
mare solidified lava on the moon
Meteor brief streak of light produced by a small particle.
orbit elliptical path of an object in space as it moves around another object due to gravity
penumbra A region of a lighter shadow that may surround an umbra
revolution motion of one body around another
satellite An object that orbits a more massive object
season defined and causes by the position of Earth's axis relative to the direction of sunlight
solar system The sun and it's family of orbiting planets, moons, and other objects
solstice one hemisphere gets its maximum area of sunlight
umbra Dark central region of a shadow
universe space and all the matter and energy in it
Created by: beckbeck078
Popular Earth Science sets

 

 



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