31.1 and 31.2 Flashcards
constellations
names of the group of stars
radio telescope
collects and amplifies radio signals
light year
distance traveled in one year
spectroscope
using prisms it separates the light in its wave lengths
nebula
stars form from large collections of gas, ice, and dust
main sequence
a broad band of stars from hot to ice cold
giant
the stars core contracts and the temperature increases
white dwarf
giants cores no longer supports the fusion and the outer layers escape into space
supernova
a giant explosion which the temperatures can reach 10 billion k
neutron star
when a star explodes it leaves behind a ball of neurons
black hole
area of space where its so dense nothing can escape its gravitational pull
photo-sphere
layer of the sun that emits light into space
sunspots
cool dark places in the suns photo-sphere where the gravitational pull is weakened
how do constellations get there names
characters in movies, animals, tools
what constellation represents the great hunter
orion
what are orions two hunting dogs names
canis major and canis minor
what do canis major and canis manor mean
big dog and little dog
how many optical telescopes are there
two
what does a refracting telescope use
convex lends
what does a reflecting telescope use
uses a concave mirror
what are the two names of our 2 telescopes
reflecting and refracting
why are space telescopes better than ground based telescopes
dont have much disruptions no pollution
what are the 2 space telescopes we talked abt in class
Chandra X-Ray Observatory and the Spitzer Telescope
what are the 3 things that a spectrascope scope determine
chemical composition, surface temperature, and wither its moving away from earth
objects further away are what color and wave length
red longer waves
objects closer are what color and what wave length
blue short waves
where do stars form from
nebula
what does the h and the r stand for in the hr diagram
h= Hertzsprung and r= Russell
what is the sun considered to be
a giant star
what are the layers of the sun
core, radiation zone, convection zone
what is the atmosphere of the sun composed of
chromosome and corona
are sun spots hotter or cooler than the surrounding are
cooler
true or false are sunspots permanent
false the disappear every fro days too weeks
