31.1 & 31.2 Flashcards
constellations
Group of stars
radio telescope
collects and amplifies radio waves
light year
distance light travels in one year
spectroscope
annalist different wavelengths of light collected by optical telescopes
nebula
stars from a cloud gas
main sequence
how hot stars are
giant star
a star that became big
white dwarf
cooler outside but hotter center
photosphere
the layer of the sun that emits light
sunspots
dark, cool areas in the sun where magnetic feilds weakened.
blackhole
area of space so dense that nothing can escape its gravity pull
supernova
a star that colapses on itself and explodes
neutron star
a ball of neutrons a supernova leaves behind
how did people name constellations?
they named them after characters in stories, animals, and tools.
which constellations represent the great hunter
Orion
which constellations represent the hunting dogs?
canis major and minor.
what does canis major mean?
big dog
what does canis minor mean?
little dog
how many types of optical telescopes are there?
two types
what are the two types of cons
concave and convex
H-R Diagram
The diagram which tells the temperature of stars
What happens when a star implodes?
Black hole
What are the layers of the sun?
The core, radiation zone, convection zone.
What is the atmosphere of the sun composed of
chromosphere and corona
