u930973931_answers

50 Score: 0 Attempted: 0/50 Subscribe 1. What does the “N” represent in the N-body problem? (A) Number of stars (B) Number of bodies in the system (C) Number of galaxies (D) Number of satellites 2. The N-body problem arises in which field of physics? (A) Thermodynamics (B) Celestial mechanics (C) Quantum mechanics (D) Electrodynamics … Read more

50 Score: 0 Attempted: 0/50 Subscribe 1. Who formulated the three laws of planetary motion? (A) Isaac Newton (B) Johannes Kepler (C) Galileo Galilei (D) Nicolaus Copernicus 2. According to Kepler’s First Law, the orbit of a planet is a(n): (A) Circle (B) Ellipse (C) Parabola (D) Hyperbola 3. In Kepler’s First Law, the Sun … Read more

50 Score: 0 Attempted: 0/50 Subscribe 1. Which planet is known as the “Red Planet”? (A) Venus (B) Jupiter (C) Mars (D) Mercury 2. Which planet has the largest number of moons in the Solar System? (A) Jupiter (B) Saturn (C) Uranus (D) Neptune 3. The asteroid belt lies between which two planets? (A) Mars … Read more

50 Score: 0 Attempted: 0/50 Subscribe 1. What is planetary geology? (A) Study of Earth’s oceans (B) Study of the structure and processes of planets and moons (C) Study of galaxies (D) Study of black holes 2. Which planet is most geologically active today? (A) Earth (B) Mars (C) Mercury (D) Venus 3. The most … Read more

50 Score: 0 Attempted: 0/50 Subscribe 1. What is the main component of Earth’s atmosphere? (A) Oxygen (B) Nitrogen (C) Carbon dioxide (D) Hydrogen 2. Which terrestrial planet has the densest atmosphere? (A) Earth (B) Mars (C) Venus (D) Mercury 3. What is the main gas in Venus’s atmosphere? (A) Oxygen (B) Nitrogen (C) Carbon … Read more

50 Score: 0 Attempted: 0/50 Subscribe 1. What is an exoplanet? (A) A planet within our solar system (B) A planet orbiting a star outside our solar system (C) A moon around Jupiter (D) A comet orbiting the Sun 2. Which was the first confirmed exoplanet discovered around a Sun-like star in 1995? (A) Kepler-22b … Read more

50 Score: 0 Attempted: 0/50 Subscribe 1. What does comparative planetology study? (A) Life on Earth only (B) Comparison of planets and moons in the solar system (C) The Sun’s internal structure (D) Black holes 2. Which two planets are often called “twin planets” because of their similar size and mass? (A) Earth and Mars … Read more

50 Score: 0 Attempted: 0/50 Subscribe 1. Which process powers the main sequence stars? (A) Nuclear fission (B) Nuclear fusion of hydrogen (C) Radioactive decay (D) Gravitational collapse 2. What is the final fate of a star with mass less than 8 solar masses? (A) Black hole (B) Neutron star (C) White dwarf (D) Supernova … Read more

50 Score: 0 Attempted: 0/50 Subscribe 1. What are neutrinos primarily produced by in astrophysical sources? (A) Nuclear reactors (B) Cosmic rays interactions (C) Black holes (D) Pulsars 2. Which type of neutrino was first detected experimentally? (A) Electron neutrino (B) Muon neutrino (C) Tau neutrino (D) Sterile neutrino 3. The first detection of solar … Read more

50 Score: 0 Attempted: 0/50 Subscribe 1. What is the primary source of high-energy photons in the universe? (A) Stars (B) Supernovae (C) Black holes and neutron stars (D) Planets 2. X-ray astronomy mainly studies which cosmic objects? (A) Planets (B) Cold molecular clouds (C) Hot and compact objects (D) Globular clusters 3. The Crab … Read more