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unit 3 lesson 1

vocab

QuestionAnswer
elliptical A shaped like a flattened circle
geocentric B having or representing the earth as the center, as in former astronomical systems.
gravitational force C the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface
Heliocentric D having or representing the sun as the center, as in the accepted astronomical model of the solar system.
moon E the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.
orbit F the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.
Planet G a celestial body moving in an elliptical orbit around a star.
solar system H the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Parallax an apparent shift in the position of an object when viewed from different locations
Created by: Tianalew7
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