Exploring the Cosmos - Degree Exam 2012 - Particles, Forces & the Big Bang
1. What is the fundamental particle that the LHC is hunting for?
The proton
The Higgs boson
The Z boson
The neutrino
2. If a source of waves starts moving towards you, how does the frequency of the waves measured in your frame of reference compare to what was observed when the source was not moving?
The frequency will increase.
The frequency will decrease.
The frequency will become negative
The frequency will stay the same.
3. Which of the following is not true of Tycho Brahe?
He did not believe in the Copernican system.
He developed equipment for making the most precise astronomical observations of his time.
He claimed that planets travel along elliptical paths.
He observed a supernova in 1572 and concluded that the celestial sphere is not immutable.
4. In the Standard Model of particle physics, which of the following is NOT its own antiparticle?
The gluon.
The photon.
The Z boson.
The neutron.
5. The cosmic microwave background was created when the universe was roughly how old?
300 000 years old.
3 minutes old.
13.7 billion years old.
10−10 seconds old.
6. Our present best understanding of gravitational lensing comes from which of the following?
Newton’s Law of Gravity
Einstein’s theory of General Relativity
Kepler’s third law
Quantum Chromodynamics
7. In the scenario of inflation, the inhomogeneity in the distribution of galaxies is due to what?
Quark confinement.
Primordial nucleosynthesis.
The cosmic microwave background.
Quantum fluctuations in the very early universe.
8. Which one of the following particles interacts only weakly?
The gluon.
The up quark.
The electron.
The neutrino.
9. Which of the following is not one of Kepler’s Laws?
The planets follow elliptical orbits.
The gravitational force between the sun and a planet is inversely proportional to the square of the distance between them.
The period of a planet’s orbit squared equals the average radius of the orbit cubed.
The speed of a planet varies depending on where it is in its orbit, so that it sweeps out equal area in equal time.
10. According to our best current understanding, most of the matter-energy in the universe is in what form?
Interstellar dust
Dark matter
Stars
Dark energy
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