Chapter 31.1 Flashcards
(34 cards)
Constellations
Groups of stars that form a picture
Radio Telescope
collects and amplifies radio waves
Light-Year
The distance light travels in one year
Spectroscope
uses a prism and diffraction grating to separate light into its component wavelengths.
Nebula
Large cloud of gas, ice and dust.
Main Sequence Stars
Includes the broad band of stars from the hot, bright stars, to the dim, cool stars
giant star
Created when a stars core contracts, the temp increases .
White Dwarf
Forms as the core of a giant star core no longer supports fusion and the stars outer layers escape into space, leaving a hot and dense core.
Supernova
a giant explosion which the temp within collapsing star is 10 billion K and the atomic nuclei in the core is split into nuetrons and protons.
Neutron Star
the ball that is left behind after a supernova (full of neutrons)
Black hole
An area in space that is so dense nothing can escape its pull of gravity.
photo-sphere
the layer of the sun that emits light into space
sunspot
are dark cool areas in the photosphere where the sun magnetic field has weakened.
How do people name constellations?
Characters in stories, animals, and tools
What constellation represents the great hunter?
Orion
What are the names of the two hunting dog constellations?
Canis Major and Canis Minor
What does Canis Major mean?
Big dog
What does Canis Minor mean?
little dog
How many optical telescopes are there?
Two
what kind of lens does a refracting telescope use?
Convex Lenses
What kind of lens does a reflecting telescope use?
A mirror and concave lens
Why are space telescopes better than ground-based telescopes?
Doesn’t have many distortion,obstacles,disruptions in images.
What are the 2 names of the telescope
Chandra X-Ray, Spritzer Space Telescope
What are the three things that a spectroscope can determine about a star?
Chemical composition, surface temperatures,and whether it is moving toward or away from earth.
