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Astronomy Chapter 2 Word Scramble

 
 

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Question Answer
constellationa region of the sky with well defined borders
celestial spherethe illusion of a sphere that encompasses the earth
North celestial polepoint which lies directly over the North Pole
South celestial polepoint which lies directly over the South Pole
celestial equatorprojection of Earth's equator into space
eclipticpath the sun follows
number of constellations88
galactic planeour galaxy's disk of stars
local skythe sky as seen from where you are standing
horizonboundary between Earth and sky
zenithpoint directly overhead
meridianimaginary half-circle stretching from the horizon from N to S
azimuthdirection of object along the horizon - measured in degrees
altitudeposition of object from between earth and sky
angular sizeangle that an object appears to span
angular distanceangle that appears to separate two objects
arcminutesone degree divided by 60
arcsecondsone arcminute divided by 60
circumpolarstars that never rise but make daily counterclockwise circles
latitudemeasures N to S
longitudemeasures E to W
prime meridianline of longitude at 0 degrees - runs through Greenwich, England
sky visibilitysky varies with latitude
zodiacconstellations along the ecliptic
Earth's orbitsummer solstice, winter solstice, spring equinox, fall equinox
precessiona gradual wobble that changes the orientation of Earth's axis
lunar phasesnew moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning crescent
synchronous rotationmoon must rotate once as it makes a single orbit around the Earth
lunar eclipseearth's shadow falls on moon
solar eclipsemoon's shadow falls on earth
nodestwo points at which the moon crosses the surface of the earth
umbrasunlight is completely blocked
penumbrasunlight is partially blocked
total lunar eclipsemoon passes through earth's umbra - moon turns red
partial lunar eclipsepart of moon passes through earth's umbra
penumbral lunar eclipsemoon passes thought earth's penumbra
total solar eclipsemoon comes between sun and earth - moon looks black
partial solar eclipsemoon appears red in a crescent form
annual eclipsea ring of sunlight surrounds the disk of the moon
eclipse seasonstwo periods where the nodes of the moon's orbit are aligned with the sun
saros cyclechanging dates of eclipse seasons