Exploring the Cosmos - Degree Exam 2008 - Life and Death of Stars (Part 2)
1. A globular cluster in our Galaxy is
an asterism like the Pleiades.
a group of very young stars.
a group of very old stars.
a constellation such as Orion.
2. T Tauri stars are
frequently strong infrared sources.
remnant cores of dead stars.
optically visible in their cocoon.
standard candles.
3. The Chandrasekhar limit is
the maximum mass of a white dwarf.
around ten times the solar mass.
the maximum radius of a red giant.
the radius of a black hole.
4. Protostars
are most easily observed by the IR radiation emitted.
are Population I stars.
usually emit pulses observable in radio waves.
are stars with abnormally high proton content.
5. Stars on the lower left part of the main sequence on a HR diagram are
blue giants.
red giants.
white dwarfs.
red dwarfs.
6. The Crab Nebula is of interest because it
contains a pulsar.
is in the centre of the constellation Cancer.
contains a black hole.
surrounds the supernova SN1987A.
7. Red giants
have nuclear reactions in their interior.
are a stage in the life of our Sun.
are very hot.
look very large through a telescope.
8. The Pauli exclusion principle explains
supernovae.
why white dwarfs are stable.
why neutron stars collapse.
the solar neutrino problem.
9. Type I and II supernovae
can reoccur.
are both standard candles.
will occur in stars less massive than the Sun.
will occur in stars more massive than the Sun.
10. The final state of a star depends mainly on its
mass.
degeneracy.
chemical composition.
magnitude.
Submit Quiz