24.1 and 25.1
24.2 and 25.2
24.3 and 25.3
24 vocablary
25 vocablary
100
the doppler effect helps us determine if a star is coming towards us or away from us
how can scientist determine a star moving towards earth or away from earth?
100
light
what do telescope gather
100
the temperature around them are hotter then inside of them
why are sunspots dark?
100
Uninterrupted band of light emitted by an incandescent solid,liquid,or gas under pressure
define continuous light
100
distance light travel in year about 9.5 trillion killometers
define light year
200
continuous spectrum absorption spectrum emission spectrum
what are the three types of spectrum?
200
because the atmosphere isnt in the way
why are space telescopes better to use?
200
e=energy m=mass c=speed of light
2 Explain e=mc
200
arrangement of electromagnetic radiation according to wave lengths.
define electromagnetic spectrum
200
one or two stars revolving around a common center of mass under their mutual gravitational of attraction
define binary star
300
nearest stars have larger parallax angles and farther away stars are to small to measure the parallax
how does distance effect parallax?
300
protostar
What stage are stars born?
300
Edwin hubble
who discovered red shifts?
300
a telescope designed to make observations in radio wavelength
define radio telescopes
300
an apparent group of stars originally named for mythical characters
define constellation
400
absolute magnitude and the temperature
what are the two factors of a h-r diagram?
400
they run out of fuel and collapse due to gravity
what cause stars to die?
400
galaxies are retreating from us at a speed that is proportional to their distance
what is hubbles law
400
property of a lens where by light of different colors is fused at different places
define chromatic aberration
400
variable radio source of small size that emits pulses in very regular periods
define pulsar
500
the temperature
what does a star color tell us?
500
yes!
is gravity a big factor in the life cycle of a star?
500
no, they change on a eleven year cycle
are sunspots always in the same spot?
500
a layer of the sun that is visible
define photosphere
500
system of galaxies containing from several to thousand of member galaxies
define galaxy cluster
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