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Astronomy 1010 Final Exam Questions and Answers: 2024-2025, Exams of Astronomy

A comprehensive set of questions and answers covering key concepts in astronomy 1010. It covers topics such as the nature of light, the formation of planets, the heliocentric model, and the properties of stars. A valuable resource for students preparing for their final exam in astronomy 1010.

Typology: Exams

2024/2025

Available from 02/11/2025

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ASTRONOMY 1010 FINAL EXAM QUESTIONS WITH THE BEST
ANSWERS 2024-2025.
1) The number of wave crests that pass a given point in space per second is an
example of which quantity? -- Answer ✔✔ Frequency
2) What is the origin of absorption lines that appear after a continuous spectrum of
light has traveled through a cloud of gas? -- Answer ✔✔ Gas atoms absorb photons
of only certain frequencies and re-emit them in all direction
3) What kind of astronomy was used to provide evidence of water plumes on Jupiter's
moon Europa? -- Answer ✔✔ Ultraviolet
4) What happens in the second stage of planet formation in the condensation theory?
-- Answer ✔✔ Planetesimals gain sufficient mass to start attracting other
planetesimals and forming protoplanets
5) What type of light has the most energetic photons? -- Answer ✔✔ Gamma ray
6) One of the reasons that space telescopes are used is because -- Answer ✔✔ their
collecting area can be much larger than ground-based telescopes
7) Einstein's introduction of the idea of photons best illustrates what part of the
scientific process? -- Answer ✔✔ Synthesis
8) Compared with the terrestrial planets, the jovian planets -- Answer ✔✔ have lower
densities
9) Where is the asteroid belt located? -- Answer ✔✔ Between the orbits of Mars and
Jupiter
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ASTRONOMY 1010 FINAL EXAM QUESTIONS WITH THE BEST

ANSWERS 2024-2025.

  1. The number of wave crests that pass a given point in space per second is an example of which quantity? -- Answer ✔✔ Frequency
  2. What is the origin of absorption lines that appear after a continuous spectrum of light has traveled through a cloud of gas? -- Answer ✔✔ Gas atoms absorb photons of only certain frequencies and re-emit them in all direction
  3. What kind of astronomy was used to provide evidence of water plumes on Jupiter's moon Europa? -- Answer ✔✔ Ultraviolet
  4. What happens in the second stage of planet formation in the condensation theory? -- Answer ✔✔ Planetesimals gain sufficient mass to start attracting other planetesimals and forming protoplanets
  5. What type of light has the most energetic photons? -- Answer ✔✔ Gamma ray
  6. One of the reasons that space telescopes are used is because -- Answer ✔✔ their collecting area can be much larger than ground-based telescopes
  7. Einstein's introduction of the idea of photons best illustrates what part of the scientific process? -- Answer ✔✔ Synthesis
  8. Compared with the terrestrial planets, the jovian planets -- Answer ✔✔ have lower densities
  9. Where is the asteroid belt located? -- Answer ✔✔ Between the orbits of Mars and Jupiter
  1. What are planetesimals? -- Answer ✔✔ Objects about the size of small moons orbiting the Sun and having gravitational fields just strong enough to affect their neighbors.
  2. Which of the following is true about the way planets in our solar system orbit the Sun? a) Some planets orbit the sun clockwise and some planets orbit counterclockwise b) Most of the planetary orbits are highly tilted with respect to the ecliptic plane c) All planets orbit the sun counterclockwise as seen from above Earth's North Pole. d) All the planets orbit the Sun clockwise as seen from above Earth's North Pole. -- Answer ✔✔ c) All of the planets orbit the Sun counterclockwise as seen from above Earth's North Pole
  3. According to the condensation theory, which of the following should provide the MOST clues about the conditions of the early solar system? -- Answer ✔✔ The small bodies of the solar system, such as asteroids and comets
  4. Which of the following would improve the angular resolution of a telescope? a) Increasing the collecting area of the telescope b) Decreasing the collecting area of the telescope c) Changing the type of light that the telescope can collect to one with longer wavelength. d) both a and c -- Answer ✔✔ a) Increasing the collecting area of the telescope
  5. What is the relationship between electric and magnetic fields? -- Answer ✔✔ A change in either one necessarily creates the other
  6. Which of the following statements about radio astronomy is FALSE? a) Many of the strongest radio emitters in outer space emit little or no visible light b) An electric field always produces magnetic field c) A changing electric field can produce a magnetic field, but a changing magnetic field can never produce an electric field
  1. How does the heliocentric model account for retrograde motion? -- Answer ✔✔ Earth passing another planet
  2. How did the geocentric model account for day and night on Earth? -- Answer ✔✔ The Sun orbited the Earth
  3. A meter is currently defined as -- Answer ✔✔ the distance light travels in specified amount of time
  4. An astronaut that is twice as far from the center of the Earth as she would be standing on Earth's surface experiences a gravitational pull from the Earth that is ________________ as much as she would experience if she were on Earth. -- Answer ✔✔ one fourth
  5. The energy of a photon is proportional to its -- Answer ✔✔ frequency
  6. Which of the following statements about comets and asteroids is FALSE? a) Comets tend to have larger and more elliptical orbits than asteroids b) Comets tend to be icier than asteroids c) Comets tend to be rockier than asteroids d) Comets are less dense than asteroids -- Answer ✔✔ c) Comets tend to be rockier than asteroids
  7. Which of the following does NOT result in the emission of light? a) an electron going from a higher energy level to a lower energy level b) an electron going from a lower energy level to a higher energy level c) waving a magnet in the air d) waving an electrically charged object in the air -- Answer ✔✔ b) an electron going from a lower energy level to a higher energy level
  8. The average surface temperature of Venus is 737K (864F). What is the peak wavelength of Venus's blackbody radiation in meters? -- Answer ✔✔ 3.93 x 10^- 6 m
  1. According to the condensation theory, a key ingredient in getting the process of planetary formation started is -- Answer ✔✔ dust
  2. Which scientist suggested that emission and absorption lines can be explained if atoms can only certain energy levels? -- Answer ✔✔ Light can behave as a stream of particles
  3. What hypothesis was introduced to explain the shape of blackbody curves? -- Answer ✔✔ Light can behave as a stream of particles.
  4. A perfect blackbody emits and absorbs light of -- Answer ✔✔ all frequencies
  5. Which type of spectrum does a perfect blackbody produce? -- Answer ✔✔ A continuous spectrum
  6. Rigel appears as a bright bluish star, whereas Betelgeuse appears as a bright reddish star. That means that Rigel is -- Answer ✔✔ hotter than Betelgeuse
  7. What are comets like when they are very far from the Sun? -- Answer ✔✔ They are small, cold chunks of dust and ice traveling through space
  8. Which of the following frequency ranges CANNOT be detection by the Hubble Space Telescope? -- Answer ✔✔ Gamma ray
  9. Which of the following lists contains all the jovian planets? -- Answer ✔✔ Jupiter, Saturn, Uranus, Neptune
  10. A father has a mass of 70 kg, and his daughter has a mass of 10 kg. Earth's gravitational pull on that father is -- Answer ✔✔ 7 times greater than on the daughter