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Physics Gravitation Vocab
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Gravity
Terms in this set (14)
astronomer
scientist who studies everything about the universe (planets, stars, history, black holes, radiation, movement ..)
ellipse
a curve on a plane that surrounds two focal points such that the sum of the distances to the two focal points is constant for every point on the curve
orbit
the curved (usually elliptical) path of an object around a point in space
rotate
to spin in place around an internal axis
revolve
to spin around another object or external axis (orbit)
period
the time it takes to complete one cycle of an event
radius
the distance between the center and edge of a circle
satellite
any object that revolves around another
intertial mass
the amount of resistance from an object due to its mass
gravitational mass
the mass acted on by gravity
gravitational field
force of attraction around any massive object
planet
a massive astronomical object that orbits a star
heliocentrism
theory that that sun is the center of the solar system
geocentrism
theory that the earth is the center of the solar system
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