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science vocabulary

space vocaubulary

. rotation – the spin of an object in space ( Note: Period of rotation is the amount of time it takes for an object to make one complete rotation.)
revolution the elliptical motion of a body as it travels around another more massive body in space (Note: Period of revolution is the amount of time it takes for one object to revolve around another object.)
. orbit the elliptical PATH an object takes in space while revolving around another object
. gravity attracting force due to mass or rotation
. atmosphere – mixture of gases that surrounds a planet
. sun – a medium sized star; the center of our solar system
. planet – body that orbit around the sun or a star and does not produce its own light
terrestrial planet – a small, dense, rocky planet similar to Earth (Inner planets)
. gas giant a large, gaseous planet of the outer solar system with no known solid surface (Outer planets)
. Natural satellite smaller body that orbits around a larger body
. moon a natural satellite of a planet (Note: satellites are natural or artificial bodies that revolve around more massive bodies such as planets)
. artificial satellite any human made object placed in orbit around a body in space
. comet a small body of ice, rock, and cosmic dust loosely packed together
. asteroid a small, rocky body that revolves around the sun
. meteoroid – a very small, rocky body found in space HINT: mini asteroid
meteorite – a meteoroid that reaches Earth’s surface without burning up completely HINT: It takes the “right” path to Earth
meteor – a bright streak of light caused when a meteoroid or comet dust burns up in the atmosphere NOTE: Many people call this a “shooting star”, but it is not
. thrust the force that accelerates a rocket
9. orbital velocity . the speed and direction a rocket must have in order to orbit Earth
escape velocity the speed and direction a rocket must have in order to completely break away from a planet’s gravitational pull
. centripetal force the force that causes an object to follow a curved path
Created by: aviana_