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Marano- Other Celest
Marano- Other Celestial Objects
Question | Answer |
---|---|
eclipse | when one celestial object is shaded by another |
lunar eclipse | moon is shadowed by the Earth |
lunar eclipse can only happen during | a full moon |
solar eclipse | sun's light is shadowed by the moon, light blocked from Earth |
solar eclipse can only happen during | a new moon |
annular eclipse | thin ring of sun is seen because the Moon is not large enough- too far away |
apogee | when the moon is farthest away from us in its orbit and looks smaller |
perigee | when the moon is pretty close to us in orbit and looks larger |
comets | small body of ice, rock and cosmic dust loosely packed together |
nucleus of comet | solid center |
ion tail | gas from nucleus that always points away from the sun |
dust tail | follows comet |
elliptical orbit | more elongated than any planetary orbit |
Name two sources of comets | oort cloud and kuiper belt |
oort cloud | where comets are believed to be created |
Kuiper belt | region just past Neptune's orbit |
elasteroids | small rocky bodies in orbit around the sun- belt between Mars and Jupiter |
meteroid | small rocky body orbiting the sun |
meteorite | meteoride that enters the Earth's atmosphere and hits the ground |
meteor | brigth streak caused when a meteroid or comet dust burns up in the Earth's atmosphere before it reaches the ground |
cosmology | study of the origin and future of the universe |
Big Bang Theory | belief that gravity may slow down and cause the universe to clump back together again |
Big Crunch Theory | belief that gravity may slow down and cause the universe to clump back together again |
Pulsating Theory | the universe expands and then starts to slow down, shrinks, and then expands, over and over |