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AEA Quiz Questions and Answers, Exams of Andragogy

Henderson State University (HSU)Andragogy

AEA Quiz Questions and Answers 1. what do asteroids and comets have in common? ANS most are unchanged sincetheir formation in the solar nebula 2. why do asteroids and comets differ in composition ANS asteroids formed insidethe frost line, while comets formed outside 3. what is the size of the largest asteroid? ANS 1,000 km 4. the combined mass of all the asteroids in the asteroid belt is ANS less than thatof any terrestrial planet 5. the large gaps in the asteroid belt (often called Kirkwood gaps) are causedby ANS orbital resonances with Jupiter 6. if we know the size of an asteroid, we can determine its density by ANS deter-mining its mass from its gravitational pull on a spacecraft, satellite, or planet 7. why aren't small asteroids spherical in shape 2 / 3 ANS the strength of gravity on small asteroids is less than the strength of the rock

Typology: Exams

2023/2024

Available from 09/10/2024

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AEA Quiz Questions and Answers
1. what do asteroids and comets have in common?
ANS most are unchanged since their formation in the solar nebula
2. why do asteroids and comets differ in composition
ANS asteroids formed inside the frost line, while comets formed outside
3. what is the size of the largest asteroid?
ANS 1,000 km
4. the combined mass of all the asteroids in the asteroid belt is
ANS less than that of any terrestrial planet
5. the large gaps in the asteroid belt (often called Kirkwood gaps) are caused by
ANS orbital resonances with Jupiter
6. if we know the size of an asteroid, we can determine its density by
ANS deter- mining its mass from its gravitational pull on a spacecraft, satellite, or planet
7. why aren't small asteroids spherical in shape
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AEA Quiz Questions and Answers

  1. what do asteroids and comets have in common? ANS most are unchanged sincetheir formation in the solar nebula
  2. why do asteroids and comets differ in composition ANS asteroids formed insidethe frost line, while comets formed outside
  3. what is the size of the largest asteroid? ANS 1,000 km
  4. the combined mass of all the asteroids in the asteroid belt is ANS less than thatof any terrestrial planet
  5. the large gaps in the asteroid belt (often called Kirkwood gaps) are causedby ANS orbital resonances with Jupiter
  6. if we know the size of an asteroid, we can determine its density by ANS deter-mining its mass from its gravitational pull on a spacecraft, satellite, or planet
  7. why aren't small asteroids spherical in shape

ANS the strength of gravity on smallasteroids is less than the strength of the rock

  1. a typical shooting star in the mentor shower is caused by a entering Earth;s atmosphere ANS pea-size particle from an asteroid
  2. processed meteorites with high metal content probably are ANS chunks of alarger asteroid that was shattered by a collision
  3. in order to have a comet named after you, you have to ANS be one of the firstthree discoverers who report it to the International Astronomical Union (IAU)
  4. when do comets generally begin to form a tail? ANS Inside of Jupiter's orbit
  5. why won't pluto collide with neptune? ANS the two planets have an orbital reso-nance that prevents them from colliding
  6. in the asteroid impact theory of the extinction of the dinosaurs some 65 million years ago the dinosaurs (and over half of all the other species on Earthat that time) died off largely
  1. a planet is detected via the Doppler technique. the repeating pattern of thestellar motion tells us ANS the orbital period of the planet
  2. the depth of the dip in a star's brightness due to the transit of a planet depends most directly on ANS the planet's size
  3. how do we think the "hot Jupiter's" around other stars were formed? ANS theyformed as a gas giants beyond the frost line and then migrated inwards
  4. which of the following is a consequence of the discovery of hot Jupiters for understanding our own Solar System? ANS it shows that we do not fully understand the formation of our Solar System
  5. why are many of the newly detected extrasolar planets called "hot Jupiters" ANS their masses are similar to Jupiter but they are very close to the centralstar and therefore hot
  6. approximately how many other planetary systems have been discoveredto date? ANS a thousand
  7. why do jovian planets bulge around the equator, that is, have a "squashed" appearance? ANS their rapid rotation flings the mass near the equator outward
  8. how does Jupiter's core compare to Earth's? ANS it is about the same size but is 10 times more massive
  1. Why is Neptune denser than Saturn? ANS it has a different composition than Saturn, including a higher proportion of hydrogen compounds and rocks
  2. How do astronomers think Saturn generates its internal heat? ANS by rainingdense helium droplets from higher to lower altitudes, resembling the process of differentiation
  3. the belts and zones of Jupiter are ANS alternating bands of rising and falling air at different latitudes
  4. the four Galilean moons around Jupiter are ANS a mixture of rock and ice, withthe ice fraction increasing with distance from Jupiter
  5. Why do Uranus and Neptune have blue methane clouds but Jupiter and Saturn do not? ANS Methane does not condense into ice in the warmer atmospherictemperatures of Jupiter and Saturn
  6. The fact that most moons always show the same face to their planet is ANS anatural consequence of tidal forces acting on the moons
  7. what is the most important reason why an icy moon is more likely to be geologically active than a rocky moon of the same size? ANS ice has a lower meltingpoint than rock
  8. which moon has the most substantial atmosphere? ANS Titan
  9. why does Titan have such a nitrogen-rich atmosphere? ANS the nitrogen comesfrom the breakup of ammonia (NH3) by solar radiation and subsequent thermal escape of the hydrogen