22 Check your knowledge! quiz 1 / 18 What were the masses of the two black holes that produced the first detected gravitational waves? 12 and 21 solar masses 29 and 36 solar masses 33 and 36 solar masses 8 and 42 solar masses 2 / 18 The reason why neutrinos are so hard to detect is low flux small mass weak interaction no electric charge 3 / 18 Which of these supposed messengers aren't detected yet? neurtrino gamma rays dark matter gravitational waves 4 / 18 The existence of gravitational waves was predicted in: 1916 1930 1944 1964 5 / 18 How many electrons does the cascade of secondary particles from cosmic rays create? 2% 4% 7% 9% 6 / 18 How many antiparticles does the cascade of secondary particles from cosmic rays create? less than 1% less than 2% less than 0.5% less than 5% 7 / 18 When was extrasolar multimessenger astronomy born? 1974 1987 1993 1999 8 / 18 How many helium nuclei does the cascade of secondary particles from cosmic rays create? 2% 7% 10% 12% 9 / 18 Which of the following statements is false about space-time? The greater the curvature of space-time, the stronger the pull of gravity Space-time is a way to describe the strength of gravity in terms of a curved surface The size of the object, not the mass, determines the curvature of space-time all of the above 10 / 18 How many heavy nuclei does the cascade of secondary particles from cosmic rays create? 0.5-1% 1-2% 2-3% 3-4% 11 / 18 Up to which energies does it make sense to detect cosmic rays directly? eV MeV PeV TeV 12 / 18 How many protons does the cascade of secondary particles from cosmic rays create? 55% 64% 76% 85% 13 / 18 Why is detection of neutrinos important? neutrinos carry important information about the early stages of the expansion of the universe. studying the properties of neutrinos helps to better understand the dynamics of stellar processes it allows us to detect and study even more distant astronomical objects all above 14 / 18 What are the neutrino sources? the Sun nuclear reactors cosmic rays all of the above 15 / 18 Who was awarded by the Nobel Prize for their role in the detection of gravitational wave? Stephen Hawking, Leonard Susskind and Roger Penrose Leonard Susskind, Barry Barish and Rainer Weiss Rainer Weiss, Kip Thorne and Barry Barish Stephen Hawking, Rainer Weiss and Kip Thorne 16 / 18 What is false? Cosmic rays provides information about the amounts and types of matter which compose the Universe Cosmic rays are produced in violent phenomena as supernovae explosion and can travel in our galaxy billion of years before reaching Earth Cosmic rays carry the traces of their origins Cosmic rays give us information about stars evolution and our solar system 17 / 18 Neutrino can interact via: only the neutral weak interaction only the charged weak interaction the electromagnetic interaction the neutral or charged weak interactions 18 / 18 What is the energy range allowing gamma-ray detection only with the ground-based arrays? MeV GeV TeV EeV Your score is The average score is 53% LinkedIn Facebook Twitter 0% Restart quiz
