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Prentice Hall Astron

Chapter 1

QuestionAnswer
imaginary line that passes through Earth's center and North & South poles axis
spinning of Earth on its axis rotation
movement of one object around another revolution
path orbit
sun is farthest north or south of the equator solstice
system of organizing time calendar
when noon sun is directly overhead at the equator equinox
push or pull force
a force that pulls moon toward Earth gravity
every object in the universe attracts every other object law of universal gravitation
amount of matter in an object mass
force of gravity on an object weight
tendancy of an object to resist a change in motion inertia
an object at rest will stay at rest . . . Newton's first law of motion
different shapes of the moon you see from Earth phases
when an object in space comes between the sun and a third object eclipse
darkest part of the moon's shadow umbra
larger part of the shadow penumbra
full moon when Earth is directly between the moon and the sun lunar eclipse
the rise and fall of ocean water tides
greatest difference between consecutive low and high tides spring tide
least difference between consecutive low and high tides neap tide
device built toobserve distant objects by making them appear closer telescope
maria dark, flat areas on moon's surface
crater large round pits
chunks of rock or dust from space meteoroids
Created by: Karen Copanic
Popular Earth Science sets

 

 



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