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Space Unit Exam

TermDefinition
Inner planets Mercury Venus Earth and Mars
Outer planets Jupiter Saturn Uranus Neptune
Jovian scientific name for the gas giants
Terrestrial scientific name for the rocky planets
altitude the height of a planet or star you are looking at
azimuth the rotation from north
sextant used to find altitude
compass used to find azimuth
celestial bodies everything in space. Planets and stars
constellations groups of stars
solar system the planets and asteroids that revolve around our sun
nebula gas and dust region in space that forms stars
geocentric earth centered model of the solar system that circle orbits
heliocentric sun centered model of the solar system that has elliptical orbits
ellipse the shape of a squished circle.
objective lens the lens in a telescope closer to the object you're looking at
ocular lens the lens you look through in a telescope
refracting telescope telescope that uses lenses
reflecting telescope telescope that uses mirrors
inertia a body in motion wants to stay in motion
spectroscope allows you to view spectral lines and see what element stars are made of
Doppler effect expansion or compression of waves depending on which direction that object is moving
red shifted object is moving away from you
blue shifted object if moving towards you
interferometry combining powers of telescopes to increase magnification
adaptive optics mirrors adjusting for the dust in the atmosphere to stop the "twinkling" or stars
Hubble telescope a space telescope sent out past the atmosphere to stop atmospheric distortion
triangulation (aka parallax) a method of creating similar triangles to help find distances to far objects
radio waves electromagnetic waves that can travel through solids
rockets payload, tube, combustible material
staged rocket fuel containers fall off to decrease mass
low earth orbit satellites in orbit closer to earth
geosynchronous orbit satellites in orbit so far out that they follow one spot on earth
Created by: carly.riddle
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