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Brooks Jarrett-Astronomy Chapter 4
Bolded Words
16
Astronomy
7th Grade
02/22/2013

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Term
Constellations
Definition
a pattern of stars in the night sky
Term
Absolute Magnitude
Definition
The measure of light that it gives off
Term
Apparent Magnitude
Definition
The amount of light recieved on earth
Term
Light year
Definition
The distance of light That travels in a year
Term
Photosphere
Definition
The lowest layer of the suns atmosphere and the layer that light is given off from
Term
Chromosphere
Definition
The layer above the photosphere
Term
Corona
Definition
The largest layer of the suns atmosphere above the Chromosphere
Term
Sunspots
Definition
areas of the sun that appear dark because they are cooler than the other parts of the surface
Term
nebula
Definition
a large cloubs of gas, ice and dust
Term
Giant
Definition
the name a star is called when is is in the a late stage of its life cycle
Term
White dwarf
Definition
the last stage in a stars life cycle
Term
Super Giant
Definition
a massive star expands after gaining heavier elements
Term
neutron star
Definition
after a super giant collapses the neutrons stay and then the collapsed core shrinks and then it becomes a neutron star
Term
black hole
Definition
a region where light cannot escape
Term
galaxy
Definition
a large group of stars gas and dust held together by gravity
Term
Big bang theory
Definition
a leading theory that the universe bagan with an explosion
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