Shared Flashcard Set

Details

title
science stars in the sky
46
Science
8th Grade
02/17/2011

Additional Science Flashcards

 


 

Cards

Term
Constellations
Definition
section of the sky that contain recognizable star patterns.
Term
Light- year
Definition
is a unit of length equal to the distance that light travels through space in one year.
Term
Spectrum
Definition

rainbow of colors

Term
Apparent magnitude
Definition

how bright a light is

Term
Absolute magnitude
Definition
actual brightness of a light
Term
Parallax
Definition

apparent shift of position

Term
H-r diagram
Definition
graph showing the relationship between stars temperature
Term
Main sequence
Definition
diagonal pattern of stars
Term
Supernova
Definition

basically the death neutron star- star made of neutrons of a large

Term
Neutron star
Definition
star made if neutrons
Term
Pulsar
Definition

spinning star

Term
Black hole
Definition
objects more than three times the mass sun squeezed into a ball.
Term
circumpolar stars
Definition
are star seen at all times of the year and all times of the night
Term
contiuous spectrum
Definition
a spectrum that shows all colors of light.
Term
spectograph
Definition
an instrument used to break a stars light onto a spectrum
Term
Emission lines
Definition
lines that are made with certain wavelengths or color of light given off or emitted by hot gases.
Term
universe
Definition
all space matter and contains space contents
Term
astronomy
Definition
the study of all things beyond earth
Term
Year
Definition
time required for the earth to revolve around the sun once
Term
Month
Definition
roughly the amount of time required for the moon to revolve around the earth once
Term
Day
Definition
time required for earth to rotate on axis once
Term
Leap year
Definition
extra day added to calendar
Term
Telescope
Definition
an instrument that collects light to see things in space
Term
refracting telescopes
Definition
 lenses that gather and focus light
Term
reflecting telescopes
Definition
 curved mirros that gather light
Term
electromagnetic spectrum
Definition
 moade of wavelengths of electromagnetic radiation
Term
Galaxies
Definition
large group of stars
Term
Nebulas
Definition
cloud in space
Term
Globular clusters
Definition
 groups of old stars
Term
Open clusters
Definition
groups of stars that are located in spiral galaxies
Term
Quasars
Definition
starlike sources of light that is extremely far away
Term
Cosmology
Definition
is the study of the origin, structure, and future of the universe
Term
Big bang theory
Definition
 universe began by a huge explosion
Term
Roman calendar
Definition
has exactly 365 days
Term
claudius ptolemy
Definition
greek astronomer
Term
Claudius ptolemy
Definition
greek astronomer took information from theories and then created his own theory
Term
Nicoluas Copernicus
Definition
Polish astronomer published a new theory that changed astronomy
Term
Tycho brahe
Definition
Danish astronomer used several large tools to study the sky
Term
Johannes Kepler
Definition
Kept on studying Tychos work when he passed
Term
Galileo galiliei
Definition
became the first person to use a telescope
Term
Edwin Hubble
Definition
he bagan researching the galaxies
Term
Spiral Galaxies
Definition
abulge at the center with spiral arms
Term
Elliptical Galaxies
Definition
galaxies that are spherical
Term
Irregular galaxies
Definition
dont fit in the other classes
Term
Gas clouds
Definition
Made of dust and gasses
Term
Star clusters
Definition
many kinds of star clusters
Supporting users have an ad free experience!