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Astronomy chapter

vocabulary words

solar system The sun and the objects that are traveling around it
planets Objects that travel around a star in a path
gravity A force of attraction ,or pull ,between any object and any other object due to their mass
inertia the tendency of a moving object to keep moving in a straight line
revolving orbiting
constellations groups of stars that form patterns in the sky
inner planet the group of planets closest to the sun
outer planets the group of planets beyond the asteroid belt
asteroid belt region between Mars and Jupiter where most asteroids are found
asteroid one of the many small rocky objects that orbit the sun between the orbits of Mars and Jupiter
comet a dirty snowball orbiting the sun a mixture of ices,frozen gases and dust left over from the formation of the solar system
meteor A chunk of rock from space that burns up as it travels through earth's atmosphere
meteorite a chunk of rock from space that strikes the surface of the earth or moon
galaxy a collection of billions of stars. Our sun belongs to the Milky way Galaxy
Created by: msterrell