Tools Of Astronomy And The Interaction Of Matter And Light Flashcards
Which comet broke up and bombarded Jupiter in 1994?
Shoemaker-Levy 9
Cepheid variable stars are “standard candles” of brightness. What did Edwin Hubble use them for?
He used them to determine the distance from the Earth to the Andromeda galaxy.
Ancient astronomers observed some stars that appeared to more very quickly around the celestial sphere. Sometimes these stars appeared to move backwards with respect to the celestial sphere.
What objects were these astronomers observing?
Planets
What area of the electromagnetic spectrum would a heat lamp peak?
Infrared
Why are optical telescopes often placed in mountainous areas?
To mitigate atmospheric blurring
What impact does a strongly curved lens or mirror have on a telescope?
It shortens the focal length.
What is the purpose of a modern spectrograph?
It separates wavelengths of light using grating.
What does the Doppler Effect produce and apparent change in?
Frequency
Why does redshift support the idea of the Big Bang Theory?
It demonstrates that the universe is expanding as most distant galaxies are moving away from Earth.
What causes a sonic boom?
An object producing sound waves is traveling faster than the speed of sound.
Star A has a peak wavelength at 550 nm and Star B of 800 nm. Assume star A and star B have the same radius.
What star has the largest amount of energy being emitted?
Star A releases more energy as light particles at a higher frequency
What color star would be associated with long wavelengths?
Red
