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50 Cards in this Set
- Front
- Back
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By locating the north celestial pole in the sky, how can you determkin your altitude?
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The altitude of the NCP is the same as your latitude.
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which of the following statements about parallax is not true?
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The technique of stellar papalas was use by hubble to determine that the andromeda galazy (m 31) us abiyt 2 million light years away.
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which of the following statements about the calastial sphere is not true?
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The "celestial sphere" is just another name for our universe.
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What condituions are required for solar eclipse?
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The phase of hte moon must be new. and the nodes of the moon's orbit must be nearly aligned with Earthe and the sun.
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If the moon is risin gat midnight, the phase of the muoon must be?
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Third quarter
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In addition to the conditions required for any solar eclipse, what must alos be true in order for you to obsereve a total solar eclipse?
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The Moon's umbra must touch the area where you are located
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You observe a full moon rising at sunset. What will you see 6 hours later?
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a full moon on or near your meridian
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Whic of the following correctly describes a relationship between the sky and your location on earth?
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I f you are in the Northern Hemisphere, the alititude of the north celestial pole equals your latitude.
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In any particular place on Earth certain constellations are visible in the evening only at certain time of the year because?
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Our evenig view of space depends on where earth is located in its orbit around the sun.
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If we have new moon today, when will we have the next full moon?
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in about 2 weeks
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Which of the following statements about lunar phase is true?
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It is possible to have two full moons during january, but not during February
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If the moon is relatively far from earth, so that its umbra does not reach earth, someone directly behide the umbra will see?
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a annular eclipse
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When some on earth observes the moon in the first quarter phase, someone on the moon facing earth observes earth in the
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third quarter earth phase
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Stars that aren visisble in the sky on any clear night of the year, at any time of the night are called?
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circumpolar
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Wehn are eclipse seasons?
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when the nodes of the moon orbit are nearly aligned with the sun
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Its 6 am and the moon is high in your sky ( crossing the meridian). What is the moon's phase?
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New
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We can't detect stellar parallax with naked-eye observations. Which of the following would make parallax easier to observe?
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increaseing the size of earth's orbit
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How many arcseconds re in 1 degree?
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3,600
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Ancient people who knew the saros cycle could
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Predict when an eclipse would happen, but not necessarily what type and where it would be visible
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Suppose it is full moon. What phase of earth would someoneon the moon se at this time?
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new earth
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Suppose you lived int he United States and you see a crescent moon in your evening sky tonight. What will a friend in South Americansee tonight?
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Your friend will see a cresent moon
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An angle of 1 arcsecond is
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slightly more than the width of a basketball held at arm's length.
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About how many stars are visible to the naked eye on a clear, dark night away from city lights?
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a couple thousand
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Which of the following statements about a moon is true?
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The moon's distance from earth varies during its orbit.
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What is the saros cycle?
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the roughly 18-year cylcel over which the patttern of eclipse repeats
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During a planet's period of apparent retrograde motion (as seen from Earth)
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For the few weeks or months, the planet moves westward relative to the stars, rather than the usual eastward relative to the stars.
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At approximatly what tiem would a frist quater moon rise?
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noon
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You are satnd on earths equater. Which way Polaris, the North star?
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on the norther horizon
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If pare of the full moon passes through earth's umbra, we will see
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partial lunar eclipse
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If the moon rises around 3 AM, it's phase must be?
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waning cresent
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Which of the following correcytly describes the meridian in your sky?
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a half-cycleextednig from yo9ur horizon due north, through your zenith, to your horizon due south
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Which of the following never goes in retrograde motion?
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the Sun
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Which of the follwoing statements about circumplar stars is true at all latitudes?
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LIke all other stars, tehy rise in the east and set in the west.
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Orion is visibel on winter evenings but not summer eveings because of
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the location of earth in its orbits
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what do we mean when we talk about the "milky way" in our sky?
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We mean the patchy band of light that represents what we see when we look into the plane of the milky way galaxy?
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What happens during the apparent retrograde motion of a planet?
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The planet appers to move eastward with respect to the stars over a period of many nights.
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We cannot see a new moon in our sky because?
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a new moon is quite near the sun in th esky.
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We describe a location on earths surface by stating its
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Latitude and longitude
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When we look into the band of light in our sky that we call the milky way, can we see distant galaxies? Why or why not?
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No, because the stars, gas, and dust of the mily way block us from seeing them.
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For most of history, lthe lack of observable stellar parallax was intrupreted to mean that
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earth is stationar at the center of the universe.
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During the period each year wehn we see Mars undergoing apparent retrograde motion in our sky, what is really going on in space?
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Earth is catching up with and passing by Mars in their respctive orbits.
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What do astronomers mean by a constellation?
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A constellation is a region in the sky as seen from earth
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Suppose you use the southern crose to determine that the south celestial ple appers 40 degrees above your horizon. Then you must be located at?
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Latitude 40
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Suppose you see a photo showing Jupiter half in sunlight and half in shadow
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the Galileo spacecrapft, when it was orbiting Jupiter.
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How does earth varying distance from the sun affect our season?
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Earth's orbital distance plays no obvious role in the seasons.
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waht makes the Norht star, Ploaris, special?
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It appears very near teh north celestial pole.
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If it is midnight in New York, it is
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Daytime in Sydney, AU
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What conditions are required for a luner eclipse?
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The phase of the moon must be full, and the nodes of the moon's orbit must be nearly aligned with earth and the sun
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The point directly over your head is called
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the zenith
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When traveling north from the united states into canada, you'll see the north star (polaris) getting
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higher in the sky
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