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Astronomy chapter
vocabulary words
Question | Answer |
---|---|
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 |