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Space

Vocabulary

QuestionAnswer
Our Sun medium sized star - its mass holds the planets in orbit through gravity. produces nuclear fusion
Asteroids pieces of rock and metal follow a regular orbit around sun. can be tiny pebbles or miles wide rocks
Meteors meteroroid burning up in our atmosphere
meteroid small rocky body traveling in space
meteroite a meteoroid that did not burn up in atmosphere
comets mix of rock dirt ice and gas, orbits sun
planets Bodies in orbit around the sun. They are massive enough to keep round through own gravity. May or may not have moons orbiting them
dwarf planet a celestial body orbits sun, is round due to it's own gravity, but has not cleared its orbital path.
Terrestrial planet highly dense, rocky planets near sun
Gas Giants deep massive atmosphere of gases but with a mantle and a core
Galileo invented telescope and named Jupiter's biggest moons
Model picture, idea or object that represents something too large or too small for study.
Orbit path that one object follows as it revolves around another object in space
Gravity force of attraction between two objects due to their mass
Geocentric Belief that Earth was center of universe
Heliocentric Sun Centered Universe
Shuttle reusable space vehicle takes off like rocket and lands like an airplane
ISS micro gravity laboratory in which an international crew work and live while traveling 5 miles a second orbiting earth
probe unmanned vehicle sent into space to gather scientific data
planetessimal a small body from which a planet originates
Parahelion orbit point closest to sun
Aphelion orbit point farthest away from sun
Parallax apparent shift in the position of an object viewed from another position
Kepler scientist who proved orbits are not round but elliptical instead
Galileo scientist who made first telescope and proved galaxy was heliocentric
Created by: science183
Popular Earth Science sets

 

 



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