Exam #1: Ch 1-4
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| You are standing on the equator and you notice that the sun is directly overhead. What Equinox is it? | Vernal or Autumn Equinox
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| You are standing on the equator and you notice that the sun is directly overhead. The sun is on the __________. | Zenith
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| You are standing on the equator and you notice that the sun is directly overhead. The sun will be above the horizon for _______ hours that day. | 12 hours
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| You are standing on the equator and you notice that the sun is directly overhead. (True or False). All the stars in the sky will be circumpolar. | False.
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| You are standing on the equator and you notice that the sun is directly overhead. What is the declination of the sun? | 0 degrees
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| You are standing on the equator and you notice that the sun is directly overhead. What is the altitude of the sun? | 90 degrees
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| You are standing on the equator and you notice that the sun is directly overhead. (True or False) The sun is on the celestial meridian | True
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| You are standing on the equator and you notice that the sun is directly overhead. What is the altitude of the north celestial pole from this location? | 0 degrees
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| You are standing on the equator and you notice that the sun is directly overhead. (True or False) 3 months later the sun is now at a declination of -23.5 degrees, this is due to the precession of the earth's axis of rotation. | False.
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| You're still on the equator. Since the sun is directly overhead you know its noon. At exactly noon a full solar eclipse occurs. What phase is the moon in? | New Moon
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| You're still on the equator. Since the sun is directly overhead you know its noon. At exactly noon a full solar eclipse occurs. Approximately what time would you expect the moon to set? | 6pm
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| You are now an ancient Greek astronomer. How would you answer the following question. What is not evidence for an earth centered universe? | Retrograde orbits of planets
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| You are now an ancient Greek astronomer. How would you answer the following question. (True or False) The 3 things we (as ancient greeks) know is that the universe is unchanging, everything orbits in perfect circles, and the earth is the center. | True
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| You are now an ancient Greek astronomer. How would you answer the following question. (True or False) I can easily use the altitude of the north celestial pole to find my longitude on earth | False
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| You are now an ancient Greek astronomer. How would you answer the following question. (True or False) In order to find my longitude on earth I need to define a universal time. | True
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| Answer the following as a modern astronomer would. The Copernicus model simplified the explanation of____________. | Retrograde orbits of planets
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| Answer the following as a modern astronomer would. (True or False). Tycho showed that supernova explosions happened much further away than the planets. | True
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| Answer the following as a modern astronomer would. (True or False) Tycho took some of the most accurate naked eye observations of celestial objects to date. | True
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| Answer the following as a modern astronomer would. What paradigm did Kepler do away with to prove the sun centered model? | The notion of perfect circles
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| Answer the following as a modern astronomer would. Kepler's second law tells that_______. | Orbiting objects sweep out equal areas in equal times during their orbits
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| Answer the following as a modern astronomer would. (True or False) The larger an object's average orbital radius, the smaller the period of the orbit. | False
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| Answer the following as a modern astronomer would. (True or False) Galileo measured stellar parallax. | True
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| Answer the following as a modern astronomer would.What is not a hallmark of science? | It must conform to paradigm
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| Answer the following as a modern astronomer would. Speed and velocity are identical quantities. | False
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| Answer the following as a modern astronomer would. Acceleration requires a ____________. | Force
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| Answer the following as a modern astronomer would. Newtons's second law of motion states _________. | F = ma
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| Answer the following as a modern astronomer would.The sun exerts a force on the earth and the earth exerts a force on the sun ___________. | equal and opposite
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| Answer the following as a modern astronomer would. What is not conserved quantity? | Force
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| Answer the following as a modern astronomer would. What is not an example of kinetic energy? | Chemical
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| Answer the following as a modern astronomer would. A tidal force can ____________. | Cause geological effects on planets and moons
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| A ________________ is a pattern of stars within apparent proximity to each other on the celestial sphere. | constellation
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| _______________ constellations generally have names derived from middle eastern languages | Northern Hemisphere
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| __________________ constellations generally have names familiar to 17th century explorers. | Southern Hemisphere
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| What are the 4 units of distance? | m, au, pc, and ly
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| Astronomy is the oldest of the _________ sciences with roots in ancient religions. | natural
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| This class will focus primarily on ___________ objects such as planets, stars, asteroids, moons, dust, and techniques of astronomy. | solar system
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| This class will also concern itself with the __________ of astronomy. | history
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| How would you write 7,320,000 in scientific notation? | 7.32x10e6
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| How would you write .002? | 2x10e-3
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| 10e10x10e2=....? | 10e12
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| 10e0/10e2= | 10e-2
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| We always reserve the right to use whichever __________we find most convenient. | units
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