A

=A=


 * //__Absolute magnitude__//**:the brightness that a star would have at a long distance from the Earth.
 * online definition:[|Absolute magnitude]
 * [|Picture]
 * [[image:http://farm1.static.flickr.com/25/100879743_1bff4cec77.jpg?v=0 width="170" height="114"]]
 * //__Acceleration__//**:the speed an object travels over time.
 * Online Definition:[|Acceleration]
 * [[image:http://farm1.static.flickr.com/16/23303102_1aa9d840e4.jpg?v=0 width="92" height="123"]]
 * [|RST V8 by Cosmic Spanner]

__//**Accuracy**//__:the quality or state pretty much your free of error [|Picture] __//**Achieve**//__:to do or get done __//**Acid**//__:any compound substance that increases the number of hydronium ions that dissolved __//**Alkali metal**//__:one of the elements in group one of the periodic table __//**Alkaline- Earth metal**//__:one of the elements in go __//**Apparent Magnitude**//__ :the brightness of a star as seen from Earth __//**Appropriate**//__:proper or correct __//**Archimedes' principle**//__:principle that states that the buoyant force on an object in a fluid is an upward force __//**Area**//__:measure of the size of both ends of an objects side multiplied by each other [|The shadow]
 * Online Definition:[|Accuracy]
 * [[image:http://farm3.static.flickr.com/2148/2105409295_88fae769b5.jpg?v=0 width="131" height="83"]]
 * Online Definition:[|Achieve]
 * [[image:http://farm1.static.flickr.com/26/56464992_b170b02526.jpg?v=0 width="130" height="106"]]
 * [|Picture]
 * Online Definition:[|Acid]
 * [[image:http://farm1.static.flickr.com/69/159016963_96460b06bb.jpg?v=0 width="126" height="84"]]
 * [|Picture Yellowstone: Volcanic Pools 2 on Flickr]
 * Online Definition:[|Alkali metal]
 * [[image:http://l.yimg.com/www.flickr.com/images/spaceball.gif]][[image:http://farm1.static.flickr.com/195/483665153_01fe02da0b.jpg?v=0 width="173" height="120"]]
 * [|Metal on metal on flicker]
 * Online Definition:[|Alkaline- earth metal]
 * [[image:http://farm1.static.flickr.com/41/87507267_f848e796b1.jpg?v=0 width="114" height="83"]]
 * [|picture]
 * Online Definition:[|Apparent magnitude]
 * [|Picture]
 * [[image:http://farm3.static.flickr.com/2050/1966026734_a1e33ee9f5.jpg?v=0 width="147" height="107"]]
 * Online Definition:[|Appropriate]
 * [[image:http://farm1.static.flickr.com/167/400603504_7627322fbe.jpg?v=0 width="145" height="111"]]
 * [|Picture]
 * Online Definition:[|Archimedes' principle]
 * [[image:http://farm1.static.flickr.com/79/249412269_7f149589f7.jpg?v=0 width="168" height="115"]]
 * [|Arimedes principle]


 * Online Definition:[|Area]

__//**Asteroid**//__:small rocky object that orbits the sun and are located in the orbit of Mar and Jupiter [|Astroid]
 * Online Definition:[|Asteroid]

__//**Astronomical unit**//__:the distance between the Earth and the sun

[|helix nebula] [|asronomical preuser]
 * Online Definition:[|Astronomical unit]
 * __**asronomical preuse**__r:the pressure caused by the atmosphere
 * [[image:http://farm1.static.flickr.com/68/190101132_a654931331_m.jpg]]
 * Online Definition:[|Atmospheric pressure]

__//**Atom**//__:a elements smallest unit [|Atom tat]
 * Online Definition:[|Atom8]

__//**Atomic mass**//__:the number at the bottom of an element on the periodic table [|Valerio mezzanotti]
 * Online Definition:[|Atomic mass]

__//**Atomic mass unit**//__:a unit of used for atoms [|Happy mole day] [|room34psglossary » A » edit] __//**Atomic number**//__:the number at the top of an element in the periodic table
 * Online Definition:[|Atomic mass unit]
 * Online Definition:[|Atomic number]
 * [[image:http://farm2.static.flickr.com/1283/994941366_2f4aa29b4e.jpg?v=0 width="160" height="166"]]
 * [|maple leaf]

__//**Average speed**//__:is the total distance traveled divided by the total time taken [|avarage speed] __//**Axis**//__:one of two or more reference lines that mark the borders of a graph
 * Online Definition:[|Average speed]
 * [[image:http://farm3.static.flickr.com/2341/2165911276_ec630cb2f1.jpg?v=0 width="173" height="233"]]
 * Online Definition:[|Axis]
 * [[image:http://farm1.static.flickr.com/245/528619602_f6761bb7e4.jpg?v=0 width="182" height="173"]]
 * [|Axis]