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1-4 solar system
solar system
23
Astronomy
7th Grade
02/22/2013

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Cards

Term
constellations
Definition
patterns of stars in the night sky
Term
modern constellations
Definition
88 constellations
Term
Circumpolar constelations
Definition
as earth rotates, ursa major, ursa minor, and other constellations circle around polariss
Term
absolute magnitude
Definition
amount of light a star gives off
Term
Apparent magnitude
Definition
The amount of light recieved on Earth
Term
A light year
Definition
the distance light travels in a year
Term
photosphere
Definition
the surface of the sun. gives of light
Term
chromosphere
Definition
above the photosphere is the chromosphere
Term
corona
Definition
above the transition zone is the corona zone. Which is outer most layer
Term
sun spots
Definition
areas of sun surface tat appear dark because they are cooler than their surroundings
Term
Coronal Mass Ejections
Definition
when large amounts of electricety charged gas are ejected suddenly from the earths corona
Term
Giant
Definition
In the late stage of star life cycle
Term
White dwarf
Definition
When a star gets a hot dense core and is about th size of earth
Term
super giant
Definition
late stage in a massive stars in which the core heats. The star eventually expands to form a supernova
Term
neutron star
Definition
collapsed core of supernova that can shrink to 20 km in diameter and contains only neutrons in a dense core
Term
black hole
Definition
final stage in evolution of very massive star. where the cores mass collapses to a point its gravity is so strong that not even light can escape
Term
galaxy
Definition
large group of stars, dust, and gas held together by captivety
Term
Proxima centuri
Definition
closest star to Earth besides sun
Term
Sunspots
Definition
cool spots on the Sun that can disturb radio frequency
Term
Milky Way
Definition
the galaxy that we live in
Term
Super Nova
Definition
forms from a red supergiant
Term
Big Bang Theory
Definition
theory that 13.7 billion years ago, the Universe began with a fiery explosion
Term
H-R diagram
Definition
a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their spectral types or classifications and effective temperatures
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