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SBCC Astronomy 101 Final Exam With Correct
Answers 100% Verified
Which was seen by Galileo - ANSWER Stellar Parallax How big is the Milkyway - ANSWER 100,000 Light years Precession Cycle - ANSWER 26,000 years according to kepler's 3rd law, the square of the planets period in years is. - ANSWERproportional to the cube of its semi major axis in A.U.
Kepler's second Law (equal areas) implies. - ANSWER a planet moves faster when it iscloser to the sun
aristotle's hypothesis - ANSWER only a spherical earth would always cast a circularshadow on the moon.
the number of waves passing over the observer is - ANSWER frequency in Hertz which design is subject to chromatic aberration - ANSWER refractor Ptolemic model persisted for all of these reasons EXCEPT: - ANSWER it accounted wellfor Galileo's observations of the phase cycle of Venus
The Ecliptic - ANSWER the apparent path of the Sun on the celestial sphere
Kepler's first law worked, where Copernicus' original Heliocentric model failed,because Kepler described the orbit as: - ANSWER elliptical, not circular
Kepler's third law (period law) imply's: - ANSWER planets further from the sun orbit at aslower speed than the planets closer to the sun.
colors appear different because of their photons project different: - ANSWERwavelengths
both sound waves and electromagnetic radiation - ANSWER transfer energy Tycho brahe's contribution to Kepler's laws of planetary motion - ANSWER his detailedand accurate observations of the planets positions
neap tides - ANSWER a tide just after the first or third quarters of the moon when thereis the least difference between high and low water.
spring tides - ANSWER a tide just after a new or full moon, when there is the greatestdifference between high and low water.
universe largest to smallest - ANSWER universe, local, group, Milkyway, etc stars like our sun emit most of their light in: - ANSWER ultraviolet light where would you be if the sun passes through your zenith on december 21 - ANSWERTropic of Capricorn
zenith - ANSWER the point in the sky or celestial sphere directly above an observer. the force of gravity varies with the - ANSWER -product of two masses
How does Newtons Universal Law of Gravitation explain Keplers Laws - Planets, farther from the Sun will travel at a slower paceCloser to the Sun-planets will travel faster If you are in the moons umbral shadow then you will witness - ANSWER A Total solareclipse Why are most Large Telescopes reflectors not refractors - ANSWER ALL Of the above Law of universal gravitation was developed by- ANSWER Newton On which point do Copernicus and Kepler disagree? - ANSWER The orbits of the planetsare ellipses with one focus at the sun
if all of the visible colors are mixed together, what color of light would appear - ANSWERwhite light
uranus and neptune do not contain liquid metallic hydrogen because - ANSWER notmassive enough
the higher the frequency of light the _ each photon contains - ANSWER more energy clouds of venus are made of - ANSWER sulfuric acid sunspots are - ANSWER cooler than their surroundings both jupiter and saturn - ANSWER all of the above why is saturn moon titan able to retain an atmosphere - ANSWER it has a large enoughmass and cold enough
what is the reason that the interior of the earth is hot - ANSWER -heat from originalformation -radioactive decay of elements in the mantle mars has enough mass and is cold enough that water molecules could be present in itsatmosphere as vapor. one reason mars' atmosphere does not contain significant water vapor is: - ANSWER ultraviolet radiation breaks the water molecule into less massiveparticles that can escape
the flow patterns found on the surface of mars and the number of craters on top of themsuggest that - ANSWER the climate on mars was different billions of years ago
driving due east just before sunrise, you observe the moon low in the eastern sky. whatphase is it in? - ANSWER waning crescent
satellites discovered by galileo - ANSWER orbit the planet jupiter uranus and neptune appear blue/ blue-green because - ANSWER traces of methane intheir atmospheres absorb red light very efficiently
_ is a satellite of uranus - ANSWER miranda in contrast to the outer solid mantle, parts of the central regions of earths interior arethought to be fluid because - ANSWER s seismic waves cannot make it though those regions the atmosphere of _ contains mostly nitrogen with some methane. ANSWER titan saturn rings are ANSWER in the plane of the planets equator the sidereal rotation of mercury is about 59 days, while the revolution takes about 88
the motions of gas in granules on the surface of the Sun are - ANSWER upward in thebright cell centers and downward around the dark edges
the reason Pluto was demoted to the status of dwarf planet is because - ANSWER it doesnot clear out its orbital path
the _ occurs when a rapidly rotating conductor is stirred by convection to produce amagnetic field - ANSWER dynamo effect
the atmospheric pressure at the surface of venus is - ANSWER about 90 times that ofearth
the central regions of the earths core are solid because - ANSWER the pressure at thecenter raises the melting point each element has its own set of characteristic absorption lines because - ANSWERelectron energy levels differ from each other
stars like our sun emit most of their light in - ANSWER visible light what type of geological activity is observed on Neptune's triton - ANS volcanoes ofmolten lave like earth have been observed there
satellites of mars- ANS -deimos -phobos the ancient surfaces of icy satellites of jovian planets - ANS are dark in color withnumerous impact craters
aurorae around a body indicate that it possesses - ANS a magnetic field
new horizons space craft found all EXCEPT - ANSWER a surface ocean of liquid nitrogen which galilean statellite is most geologically active - ANSWER io why would a decrease in the density of the ozone layer create a public health concern -ANSWER ultraviolet radiation from the sun would bombard the earth
Europa has few craters because - ANSWER it has erased craters nearly as fast as theyhave formed
why do nuclear fusion reactions only occur in the interior of a star - ANSWER -thetemperature is hottest in the center -the density of material is very high in the center A _ blank is a meteor which explodes before reaching the ground, some fragments willreach the ground - ANSWER bolide
the formation of _ involves a young hot star (T 25,000) being relatively close by -ANSWER emission nebulae
parallax would be easier to measure if - ANSWER the earths orbit was larger for observations of stars as viewed from earth, the measurements are taken six monthsapart. the baseline of observation is - ANSWER 2AU
we know that giant stars are larger in diameter than the sun because - ANSWER theyare more luminous but have about the same temp
stars with masses between.4 and 4 - ANSWER undergo thermonuclear fusion andhydrogen and helium, but never get hot enough to ignite carbon
red giant stars are - I, II, III, IV _ is the separation of material in a newly formed planet or asteroid according to densitythis happens when an object becomes molten - ANSWER differentiation condensation in the solar nebula probably led to the formation - ANSWER all of the above what forces are responsible for the collapse of an interstellar cloud - ANSWER gravity A planetary nebula is - ANSWER the expelled outer envelope of a medium mass star.Correct
A Type I supernova is believed to occur when - ANSWER a white dwarf exceeds theChandrasekhar limit.
About how long will a 0.5 star spend on the main sequence? - ANSWER 57 billion years If the theory that novae occur in close binary systems is correct, then novae should -ANSWER repeat after some interval.
Massive stars cannot produce energy by iron fusion because - ANSWER both fusion orfission of iron nuclei absorb energy
Stars in a star cluster - ANSWER -all have the same age
-all have the same chemical composition. The Chandrasekhar limit tells us that - ANSWER white dwarfs more massive than 1.4solar masses are not stable.
The Crab nebula is - ANSWER supernova remnant. The explosion of a supernova usually leaves behind - ANSWER a shell of hot, expandinggas with a pulsar at the center
The theory that neutrinos are created in the collapse of the iron core of a massive starwas confirmed by - ANSWER the detection of neutrinos from the supernova of 1987
By what means does an isolated white dwarf generate energy? - ANSWER White dwarfsdo not generate their own energy.
Where are elements heavier than iron primarily produced? - ANSWER Supernovae Which of the following nuclear fuels does a one solar mass star use over the course ofits entire evolution? - ANSWER hydrogen and helium
is a form of electromagnetic radiation produced by rapidly moving electrons spiralingthrough magnetic fields. - ANSWER Synchrotron radiation
A group of 10 to 100 stars that formed at the same time but are so widely scattered inspace their mutual gravity cannot hold them together is called - ANSWER an association
How does the traditional theory of the formation of the galaxy explain the origin ofglobular clusters? - ANSWER They formed early on during the free-fall collapse of the proto-galactic material.
