Observing the Universe 31.1 Flashcards
constellation
star pattern that appears to form images, is used by astronomers to locate and name stars, and is often named for a mythological creature
radio telescope
telescope that collects and magnifies radio waves
light-year
distance light travels in one year- about 9.5 trillion km
spectroscope
device that disperses light into its component wavelengths, using a prism or diffraction grating
How do constellations get their names?
characters from stories, animals, tools
What is the name of the constellation of the Great Hunter?
Orion’s Belt
What are the constellation’s name of the Orion’s hunting dogs?
Canis Major and Canis Minor
What does Canis Major mean?
big dog
What does Canis Minor mean?
little dog
How many basic optical telescopes are there?
2
What are the two types of optical telescopes?
Refracting and Reflecting
What does a refracting telescope use?
Only lenses
What does a reflecting telescope use?
Only mirrors
Why are space telescopes more effective than ground-based telescopes?
No clouds or pollution can distort images
What are the names of the space telescopes?
Chandra X-Ray Observatory and Spitzer Space
Chandra X-Ray Observatory and Spitzer Space
Telescope
