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vocab for chapter 1

lessons 1-6

QuestionAnswer
satellite an object that orbits a planet
planet an object that orbits a star is large enough to have become rounded by its own gravity and has cleared the area of its orbit
meteor a streak of light in the sky produced by the burning of a meteoroid in Earth's surface
comet a loose collection of ice and dust that orbits the sun
star a all of hot gas primarily hydrogen and helium that undergoes nuclear fusion
constellation a pattern or grouping of stars that people imagine to represent a figure or objet
axis the imaginary line that passess through a plplanets center
rotation the spinning motion of a planet on its axis
revolution the movement of an object around a another object
orbit the path of an object as it revolves around another object in space
calendar a system of organizing time
solstice either of the 2 days of the year which the sun reached its greats distance north or south of the equator
equinox either of the 2 days of the year on which nether the hemisphere is tilted tords the sun
force a push or pull on an object
gravity the attractive force between objects
law of universal gravitation the scientific law that states that every object in the universe attracts every other object
mass the amount of mater in an object
weight a measure of the force of gravity on an object
inertia the tendency of an object to resist a change in motion
newtons 1 law in motion the scientific law that states that an object at rest will stay at rest and an objet in motion will stay in motion with a constant spwwwd and direction unless acted on by a force
phase one of the different apparent shapes of the moon as seen from earth
eclipse the partial or total blocking of one object in space by another
solar eclipse the blocking of sunlight to earth that occurs when the moon is directly between the sun and earth
umbra the darkest part of a shadow
penumbra the part of a shadow surrounding the darkest part
lunar eclipse the bloking of the moon that occurs when earth is directy between the sun and the moon
tide the periodic rise and fall of the leve of water in the ocean
spring tide the tide with the greatest difference between consecutive low and high tides
neap tide the tide with the least amount of difference
maria dark flat areas on the moons surface
crater 1 a large pit caused by the impact of a meteoroid 2 a bowl shaped area that forms the hole in a vocano
meteoroid a chunk of rock or dust in space
Created by: user-1975225
 

 



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