5934734
Descripción
Test por Greg Gustav, actualizado hace más de 1 año
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Creado por Greg Gustav
hace alrededor de 8 años
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Pregunta 1
Pregunta
One reason copernicus's theory of the solar system was a better scientific theory than ptolemy's theory is because...
Respuesta
-
Copernicus's theory is newer than Ptolemy's theory, and a newer theory is always better
-
Copernicus's model predicts that we should observe stellar parallax (ptolmys predicts that we should not), and astronomers do observe stellar parallax.
-
Ptolemy's model of the solar system was accepted by the church in 1600, whereas the church was against Copernicus's model.
-
Ptolemy's model does not include and explanation for retrograde motion of the planets.
Pregunta 2
Pregunta
true or false, the largest optical telescopes on earth are refractors.
Respuesta
- True
- False
Pregunta 3
Pregunta
In a telescope, the star alberio is seen as a double star including a dimmer blue star and a brighter yellow star. Which star is hotter.
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-
blue star
-
yellow star
-
we can't tell without knowing their distance
Pregunta 4
Pregunta
The main function of an optical astronomical telescope is to
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-
make objects look bigger
-
gather as much light as possible
-
increase the sharpness of an image
-
separate white light into its constituent colors
Pregunta 5
Pregunta
on a day when mars rises in the southeast, in what direction will it set
Respuesta
-
southwest
-
southeast
-
northeast
-
northwest
Pregunta 6
Pregunta
What kind of spectrum do you observe after passing a continuous spectrum through a cool, this gas
Respuesta
-
continuous plus bright lines
-
bright line
-
dark line
-
emission line
Pregunta 7
Pregunta
our suns peak energy output occurs in what region of the electromagnetic spectrum
Respuesta
-
infrared radiation
-
red colored light
-
green-blue colored light
-
ultraviolet radiation
Pregunta 8
Pregunta
which of these are types of ionzing radiation? CHECK ALL THAT APPLY
Respuesta
-
infrared rays
-
gamma rays
-
microwaves
-
ultra-long waves
-
x-rays
Pregunta 9
Pregunta
a partial lunar eclipse can only occur when the moon is in [blank_start]_[blank_end] phase
Respuesta
-
full
Pregunta 10
Pregunta
The zodiac band of constellations straddles the
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-
celestial equator
-
horizon
-
milky way
-
ecliptic
-
zenith
Pregunta 11
Pregunta
Approximately what time would the waxing gibbous phase of the moon be highest overhead? [blank_start]-[blank_end]
Respuesta
-
9 pm
Pregunta 12
Pregunta
what kind of spectrum do we see when we observe our sun?
Respuesta
-
bright line
-
dark line
-
emission line
-
maginot line
-
continuous
Pregunta 13
Pregunta
The most important feature of a good scientific theory is that
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-
the theory must not predict any phenomena that have not been observed in the past
-
the predictions the theory makes must agree with observations
-
the theory must agree with all previous theories
-
the theory must work well for obtaining funding from the national science foundation
Pregunta 14
Pregunta
if a star rises at 10:30 pm today (Thursday) what time will it rise TWO days later (on Saturday)
Respuesta
-
10:26
-
10:22
-
10:34
-
10:38
Pregunta 15
Pregunta
compared to visible light, infrared radiation has... MARK TWO
Respuesta
-
longer wavelength
-
shorter wavelength
-
higher energy photons
-
lower energy photons
Pregunta 16
Pregunta
mars in furthest from the sun when it is at
Respuesta
-
perihelion
-
apogee
-
perigee
-
aphelion
Pregunta 17
Pregunta
the solar system model made by Copernicus...
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was heliocentric
-
was centered on earth
-
was geocentric
-
was egocentric
Pregunta 18
Pregunta
the radio receiver dishes of the VLA are spaced far apart to get
Respuesta
-
more observing time on an object
-
higher magnification
-
greater radio wave length gathering area
-
better resolution
Pregunta 19
Pregunta
in the solar system model of _____, mars actually move backward in space (relative to its normal direction of motion) when it is doing its retrograde motion. it doesn't just appear to move backward as seen from earth in this model
Respuesta
-
newton
-
copernicus
-
ptolemy
-
galileo
Pregunta 20
Pregunta
What type of spectrum is given off by a hot, solid object, such as an incandescent light bulb filament? [blank_start]___[blank_end]
Respuesta
-
continuous
Pregunta 21
Pregunta
True or false: the closer to the sun a planet orbits, the slower it moves.
Respuesta
- True
- False
Pregunta 22
Pregunta
The two planets that never appear opposite in the sky from the sun are (CHOOSE TWO ANSWERS):
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-
jupiter
-
mars
-
mercury
-
venus
-
saturn
-
neptune
Pregunta 23
Pregunta
The moon displays a complete cycle of phases in one...
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-
sidereal month
-
elliptic month
-
solar week
-
synodic month
Pregunta 24
Pregunta
the method we use to determine the age of the earth is:
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-
measuring earthquake rates
-
radiometric dating
-
ocean salinity increases
-
atmosphere escape dating
Pregunta 25
Pregunta
The first person to report observing the phases of Venus with a telescope was
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-
tycho
-
ptolemy
-
galileo
-
newton
-
hubble
Pregunta 26
Pregunta
a telescope lens forms an image using the principles of
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-
reflection
-
refraction
-
dispersion
-
diffraction
Pregunta 27
Pregunta
a star that is close enough to Polaris that it never rises or sets is called
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-
circumpolar
-
zodiacal
-
synodical
-
annular
Pregunta 28
Pregunta
Very accurate naked-eye observations make by ____ allowed _____ to derive his three laws of planetary motion. (choose one set of names to fill the blanks)
Respuesta
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newton/keplar
-
keplar/newton
-
newton/galileo
-
tycho/kepler
Pregunta 29
Pregunta
How would the mass of an object differ when measured on the earth and on the moon
Respuesta
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the mass is greater on the moon
-
the ass is the same in both places
-
the mass is less on the moon
Pregunta 30
Pregunta
Polaris was not the earth's pole star 10000 years ago, this is because of
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precession
-
obfuscation
-
stellar parralax
-
the earth's magnetic field flips
Pregunta 31
Pregunta
an atom which had an electron removed is called
Respuesta
-
a neutron
-
an isotope
-
an ion
-
a fusion particle
Pregunta 32
Pregunta
there are two questions with images on test one that could not be entered. look at them on your own. Type YES if you understand. [blank_start]___[blank_end]
Respuesta
-
Yes
Pregunta 33
Pregunta
a necleus of an oxygen atom contains (mark all that apply)
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protons
-
electrons
-
waxons
-
neutrons
Pregunta 34
Pregunta
The greenhouse effect of the earths atmosphere keeps the earth warmer because...
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-
air is trasparent to incoming visible light, but partially opaque to outgoing infrared rays
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earth's magnetic field traps heat in the lower atmosphere
-
the ozone layer is very efficient at reflecting cold rays back into outerspace
-
the decay of radioactive elements inside the earth provides heat
Pregunta 35
Pregunta
The layer of ozone in the earth's atmosphere...
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regulates earth's ocean temperature
-
blocks some solar ultraviolet radiation
-
creates the earth's magnetic field
-
reflects dangerous gamma rays back to space
Pregunta 36
Pregunta
Which part of the moon's serface is younger.
Respuesta
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the maria areas
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the cratered highlands
-
the light-colored areas
-
the mountain ranges
Pregunta 37
Pregunta
the asteroid belt is bordered by the orbits of (choose 2 answers)
Respuesta
-
titan
-
neptune
-
mars
-
saturn
-
jupiter
-
venus
Pregunta 38
Pregunta
the solid part of a comet is called the [blank_start]____[blank_end]
Respuesta
-
Nucleus
Pregunta 39
Pregunta
Comet tails are made of (mark all that apply)
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liquid water droplets
-
molten metal droplets
-
gas
-
dust particles
Pregunta 40
Pregunta
The most abundant gas in earth's current atmosphere is
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oxygen
-
nitrogen
-
helium
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ozone
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methane
Pregunta 41
Pregunta
the 2ND most abundant gas in venus's atmosphere is
Respuesta
-
nitrogen
-
oxygen
-
methane
-
carbon dioxide
-
hydrogen
Pregunta 42
Pregunta
han solo has the millennium falcon <3 at Triton, and he has to pick up princess leia from the largest moon in our solar system. which way must he go?
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-
closer to the sun
-
farther from the sun
-
neither because both moons orbit the same planet
-
he is already on the correct moon
Pregunta 43
Pregunta
Which of the planets in our solar system that have rings has the smallest diameter? [blank_start]____[blank_end]
Respuesta
-
neptune
Pregunta 44
Pregunta
we know that this planet has no global magnetic field
Respuesta
-
uranus
-
neptune
-
murcury
-
satern
-
venus
-
jupiter
-
earth
Pregunta 45
Pregunta
although venus is further from the sun than murcury, venus has a thigher surface tempurature. why?
Respuesta
-
Mercury is smaller in size than Venus, so it absorbs less sunlight
-
Mercury has less mass than Venus so it cant hold the heat photons
-
Venus has a thick atmosphere of carbon dioxide
-
Venus has a dense ozone layer
Pregunta 46
Pregunta
theearth's magnetic feild is generated by
Respuesta
-
the solid iron inner core vibrating rapidly
-
a dynamo effect in the liquid outer core
-
the shifting of plates in the earth's crust
-
the solar wind plasma hitting the ozone layer
Pregunta 47
Pregunta
the earth's surface does not contain large amounts of carbon dioxide because
Respuesta
-
it chemically reacted with our helium
-
it all escaped into space due to our low gravity
-
our oceans and life forms remove it
-
cows have removed all the co2 by inhaling it
Pregunta 48
Pregunta
List a planet that exhibits retrograde rotation and is a terrestrial planet: [blank_start]__[blank_end]
Respuesta
-
venus
Pregunta 49
Pregunta
Compared to terrestrial planets, Jovian planets have (choose 3)
Respuesta
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greater density
-
lower denisty
-
fewer moons
-
more moons
-
faster rotation
-
slower roation
Pregunta 50
Pregunta
the asteroids in the asteroid belt are generally composed of
Respuesta
-
rock & metal
-
ice & gasses
-
hydrogen & helium
-
curds & whey
Pregunta 51
Pregunta
the lump of metal we passed around in class is properly called a
Respuesta
-
Meteorite
-
meteroid
-
meteroligest
-
meteor
-
meteor-senpai
Pregunta 52
Pregunta
which of these materials are found in the polar caps on mars (mark all that apply)
Respuesta
-
frozen oxygen
-
water ice
-
helium ice
-
solid carbon dioxide
Pregunta 53
Pregunta
The most common gas in the atmosphere of Saturn is
Respuesta
-
nitrogen
-
oxygen
-
methane
-
carbon dioxide
-
hydrogen
Pregunta 54
Pregunta
this planet has clouds made of concentrated sulfuric acid
Respuesta
-
uranus
-
neptune
-
murcury
-
saturn
-
jupiter
-
venus
Pregunta 55
Pregunta
the gas tail of a comet points away from the sun due to
Respuesta
-
radiation pressure
-
solar wind
-
the sun's magnetic field
-
"jets" from the comet
Pregunta 56
Pregunta
the mean density of the earth is 5.5 times that of water, while the crust is only 3 times that of water. this suggests that..
Respuesta
-
earth has a liquid core
-
earth probably has a dense metal core
-
earths core has a lower density than the crust
-
earth's atmosphere is made mostly of oxygen
Pregunta 57
Pregunta
the largest asteroid in the asteroid belt is
Respuesta
-
ceres
-
titan
-
charon
-
holestein
-
angus
-
guernsey
Pregunta 58
Pregunta
the atmosphere of [blank_start]___[blank_end] has 1.5 times the surface pressure of the earth's atmosphere, is composed mainly of nitrogen, and has an opaque orange smog layer that hides the surface from the view of visible light telescopes.
Respuesta
-
titan
Pregunta 59
Pregunta
mars has a reddish surface color because
Respuesta
-
the carbon dioxide in its atmosphere absorbs blue light, allowing red light to pass through.
-
the temperature of the surface causes it to glow with a dull reddish orange color
-
the single-cell organisms that cover its surface use a chlorophyll that is red, not green
-
the surface material has been oxidized by oxygen that was previously in its atmosphere
Pregunta 60
Pregunta
which planet or moon have we observed that has a crust composed of plates that shift position very slowly over time? [blank_start]__[blank_end]
Respuesta
-
earth
Pregunta 61
Pregunta
why did the Jovian planets only form n the outer part of the solar system?
Respuesta
-
it was the only part of the solar nebula that contained hydrogen gas molecules
-
the Jovian planets didn't have enough mass to attract rock and metal to form into terrestrials
-
hydrogen molecules move slow enough out there for a forming planet to hold onto them
-
it was too hot out there to melt rock and metal to form terrestrial planets
Pregunta 62
Pregunta
where on our moon would you most likely find water ice
Respuesta
-
in the sea of tranquility
-
in some permanently-shadowed craters near the lunar poles
-
in the largest craters near the lunar equator
-
50 feet below the surfaces of all maria
Pregunta 63
Pregunta
which of these has a sub-surface salt-water ocean
Respuesta
-
europa
-
venus
-
mars
-
jupiter
-
mercury
Pregunta 64
Pregunta
which of these rotates three times on its axis for every two orbits it makes
Respuesta
-
euorpa
-
venus
-
mars
-
jupiter
-
mercury
Pregunta 65
Pregunta
tidal forces in the earth-moon system are responsible for what effects (mark two)
Respuesta
-
the length of earth's day is getting longer
-
the length of earth's day is getting shorter
-
the moon's orbit is getting smaller
-
the moon's orbit is getting larger
Pregunta 66
Pregunta
True or false: Neptune was discovered accidentally by William herchel using a 6-inch telescope
Respuesta
- True
- False
Pregunta 67
Pregunta
the particles that hit the earth's atmosphere and burn up during a meteor shower
Respuesta
-
large rocks from the asteroid belt
-
particles left a comet trail along its oribt
-
ice crystals streaming in from interstellar space
-
ejecta from meteorite impacts on the lunar surface
Pregunta 68
Pregunta
the oort cloud is located
Respuesta
-
in venus' atmosphere
-
in jupiters' atmosphere
-
far beyond neptune
-
around io
Pregunta 69
Pregunta
radiometric dating shows that the age of our solar system is [blank_start]_[blank_end] years.
Respuesta
-
4.6 billion
Pregunta 70
Pregunta
number the stages of stellar evolution our sun will go though in order (1 - 4). White dwarf [blank_start]__[blank_end] , red giant [blank_start]__[blank_end] , main sequence [blank_start]__[blank_end] , planetary nebula ejection [blank_start]___[blank_end] ,
Respuesta
-
4
-
2
-
1
-
3
Pregunta 71
Pregunta
Of the spectral types listed below, which one corresponds to the coolest temperature stars:
Respuesta
-
G
-
F
-
O
-
B
-
A
Pregunta 72
Pregunta
Where are red giant stars located on the H-R diagram
Respuesta
-
along the left side
-
along the top side
-
in the upper right
-
in the lower right
Pregunta 73
Pregunta
what property is plotted vertically on an H-R diagram? [blank_start]__[blank_end]
Respuesta
-
luminosity
Pregunta 74
Pregunta
if the position of and evolving star on a H-R diagram is moving straight left over time, what is happening
Respuesta
-
the star is getting more luminous
-
the star is getting hotter
-
the star is getting larger in diameter
-
the star is getting less luminous
-
the star is getting cooler
-
the star is getting smaller in diameter
Pregunta 75
Pregunta
the location of the main sequence turnoff point on the H-R diagram of a cluster tells us its
Respuesta
-
mass
-
chemical composition
-
age
-
stellar population
Pregunta 76
Pregunta
which element CANT be used by high mass starts as a fuel in nuclear fusion reactions to obtain energy
Respuesta
-
carbon
-
hydrogen
-
helium
-
silicon
-
iron
Pregunta 77
Pregunta
the boundary of a black hole is called the [blank_start]_[blank_end] [blank_start]_[blank_end]
Respuesta
-
Event
-
Horizon
Pregunta 78
Pregunta
einstine's theory of general relitivity explains gravity in terms of
Respuesta
-
the bending of space-time by matter, causing objects to follow curved geodesic paths
-
quantum mechanical effects from the interactions of gravitons with higgs bosons
-
a force of attraction between objects that depends on the electric charges of objects
-
the natural tendency for earthy substances to seek the center of the universe
Pregunta 79
Pregunta
how do we know our galaxy has a very massove halo of "dark matter" if we cant see it
Respuesta
-
from the spectrum of the halo
-
the dark matter does give off detectable radio waves
-
the ages of planetary nebulae
-
the dark matter affects the rotation of the galaxy
Pregunta 80
Pregunta
the diameter of our galaxy is approximately [blank_start]__[blank_end] light years
Respuesta
-
120000
Pregunta 81
Pregunta
if you lower the temperature of a normal gas in a container...
Respuesta
-
it expands
-
its pressure decreases
-
its molecules speed up
-
it ionizes
Pregunta 82
Pregunta
how do we know the interior structure of our sun
Respuesta
-
because it is a gas so we can see all the way into the center
-
space probes can send bursts of x-rays through the sun's core
-
its surface oscillation tell us about the interior (helioseismology)
-
we have landed seismographs on the surface of the sun at night. (apocryphilology)
Pregunta 83
Pregunta
a type 1a supernove (which shows no hydrogen in its spectrum) results from the explosion of a
Respuesta
-
very young star
-
very high-mass star
-
red dwarf
-
white dwarf
Pregunta 84
Pregunta
what is the most common type of star in our galaxy
Respuesta
-
red dwarf
-
white dwarf
-
green giant
-
blue dwarf
Pregunta 85
Pregunta
two stars, gimli and fezzik, are both spectral type m3, but fezzik has much greater luminosity than gimli. Therefore we know...
Respuesta
-
gimli is hotter than fezzik
-
gimli is cooler than fezzik
-
gimli is larger than fezzik
-
gimli is smaller than gezzik
Pregunta 86
Pregunta
the gravitational collapse of a white dwarf is prevented by
Respuesta
-
degenerate electron pressure
-
degenerate neutron pressure
-
energy production inside
-
hot gas pressure
Pregunta 87
Pregunta
the maximum mass a white dwarf can have is ___ solar masses
Respuesta
-
0.4
-
1.4
-
3.4
-
8
-
~100
Pregunta 88
Pregunta
when a star first begins its life on the main sequence, what primarily determines where the star is located on the sequence
Respuesta
-
its magnetic field strength
-
its chemical composition
-
its mass
-
its age
Pregunta 89
Pregunta
the nuclear reactions in our sun produce energy because
Respuesta
-
of the radioactive decay of helium necleus
-
a helium nucleus weights less than four hydrogen nuclei that form it by fusion
-
the reactions pull energy out of the suns magnetic field and radiate it into space
-
the reactions pull energy out of the suns rotation and radiate it into space
Pregunta 90
Pregunta
pulsars are
Respuesta
-
black holes detected by their regular radio pulses
-
neutron stars that beam energy as they rotate rapidly
-
white dwarfs that change size
-
old planetary nebulae
Pregunta 91
Pregunta
which of these can produce a black hole?
Respuesta
-
type B supernova
-
type 2 supernova
-
type 1a supernova
-
regular nova
Pregunta 92
Pregunta
how do the chemical composition of stars
Respuesta
-
from their colors
-
from their spectra
-
from their orbits
-
from samples collected by interstellar space probes.
Pregunta 93
Pregunta
the photosphere of the sun has a temperature pf approximately [blank_start]___[blank_end] kelvin
Respuesta
-
5800
Pregunta 94
Pregunta
sunspots are __ than the surrounding photosphere
Respuesta
-
hotter
-
brighter
-
cooler
-
bluer
Pregunta 95
Pregunta
where are the most neutrinos produced in the sun
Respuesta
-
center
-
chromosphere
-
photosphere
-
corona
Pregunta 96
Pregunta
the length of the sunspot cycle averages around ___ years
Respuesta
-
11
-
34
-
5
-
98
Pregunta 97
Pregunta
the very hot, low density outer layer of the suns atmosphere is the
Respuesta
-
corona
-
photosphere
-
aggitosphere
-
chromosphere
Pregunta 98
Pregunta
which stellar population formed first in our galaxy
Respuesta
-
population 1
-
population 2
-
population zero
-
they all formed at the same time
Pregunta 99
Pregunta
which of these stars would have the longest lifetime
Respuesta
-
1.4 solar mass star
-
0.4 solar mass star
-
type B star
-
50 solar mass star
Pregunta 100
Pregunta
the two most abundant gasses in the interstellar medium are [blank_start]___[blank_end] and [blank_start]___[blank_end].
Respuesta
-
hydrogen
-
helium
Pregunta 101
Pregunta
which of these objects in our galaxy is the oldest
Respuesta
-
an open cluster
-
the m13 globular cluster
-
the high mass cepheid star
-
our sun
Pregunta 102
Pregunta
what type of star produces a type 2 supernova
Respuesta
-
white dwarf
-
very high mass star
-
red dwarf
-
all of these
Pregunta 103
Pregunta
we can learn the masses of various stars by observing
Respuesta
-
star tempuratures
-
binary star orbits
-
parallax shifts of stars
-
stellar flares
Pregunta 104
Pregunta
on a H-R diagram, most stars are located on the [blank_start]__[blank_end] [blank_start]___[blank_end].
Respuesta
-
main
-
sequence
Pregunta 105
Pregunta
the crab nebula is
Respuesta
-
a collapsing protostar
-
a giant molecular cloud in orion
-
i giant molecular cloud
-
a cluster of stars in the crab constellation
-
an expanding supernova remnant
-
the
-
largest globular cluster in the milky way
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