The dividing line between a protostar and a star is when:
a. fission reactions start  b. when fusion starts
c. it starts differentiating due to gravity
d. nova processes start  e. none of the above.

 The evidence that the sun is at least a second generation star comes from:
 a. its abnormal consumption of hydrogen and helium    b. the presence of iron in the sun and the  solar system    c. the high rate at which fusion takes place at its surface.   d. its abnormally large  core    e. all the above.

A heavy element such as gold #79, could only have been created in:
 a. variable Cepheids  b. supernovas   c. the giant stage    d. protostars  e. main sequence stars

Fusion in the core of a star:
 a. occurs with elements up to iron    b. involves the conversion of hydrogen to helium during the  main sequence phase    c. causes loss of mass in stars    d. releases large amounts of energy     e. all are correct.

The MOST abundant element in the universe, and from which virtually all the other elements are made is:
 a. iron    b. helium     c. carbon     d. oxygen     e. none of the above.

The use the following answers a-e for the questions below. Which stage is associated with the characteristics listed
a. for white dwarf   b. for main sequence    c. for giant stage
d. for supernova    e. for a stage that is not listed (none of the above)
the object is glowing from the heat of contraction
the fusion process is converting helium to heavier elements up to and including iron
the object has become a ball of neutrons 10 miles in diameter
fusion from H to He is the main source of energy for that stable star
the remnant of a star with a mass of 0.7 solar masses before it cools off and becomes invisible
where ALL the elements are created excepting Hydrogen

A star with a mass of 10 times that of our sun will most likely become:
 a. a black dwarf  b. a white dwarf  c. a neutron star d. a black hole  e. none of the above.

Given the following stages in the life of a star, place them in their proper chronological sequence (first stage first):
 1-protostar    2-super-giant    3-nebula    4-blue star  5-neutron star
 a. 3,4,2,5,1   b.3,1,4,2,5   c.1,2,4,3,5   d.3,4,2,1,5    e. 4,2,3,1,5

Which of the following would not be a correct stage that our sun HAS gone, or WILL go through?
a. white dwarf    b. red giant    c. neutron star    d. black  dwarf     e. protostar

 If a nebula has 5 solar masses and condenses, it will most likely become:
 a. a protoplanet   b. a very bright star   c. a brown dwarf  d. a moon  e. actually it will remain a  nebula for ever

The main characteristic that controls how large the REMNANT of a star will be is:
 a. color   b. age   c. mass  d. location  e. quality

In which stage will a star spend most of its life?
 a. protostar  b. giant  c. main sequence   d. T Tauri   e. this is silly; stars are not alive.

Which of the following are balanced in a main sequence star?
 a. gravity and mass  b. gravity and fission pressure     c. gravity and temperature
 d. gravity and fusion pressure     e. fun and games

The MAIN characteristic that determines how a sun will die is:
 a. mass  b. color   c. temperature  d. size   e. being sick of it all

Stars are different from planets in that:
 a. they formed from different material  b. fusion occurs in stars and they release energy
 c. they occur in space   d. they are less common   e. all of the above are correct

In what part of our sun is hydrogen being converted to Helium?
 a. corona  b. chromosphere  c. photosphere  d. convective zone    e. core

The closest place where you can find fusion going on continually is:
 a. in a research reactor in Berkely, California   b. in the sun  c. in the center of the earth
 d. nowhere yet, though we are working on it    e. in jazz
 Which of the stars below has the hottest surface?
a. a yellow star  b. a red star  c. a red giant
d. a blue star  e. an orange star.

Many of the nuclei of the atoms in a newborn baby were MADE in:
 a. the mother's body  b. the food the mother ate   c. ancient stars  d. the earth's core  e. none of these

Which of the stars below has the hottest surface?
 a. a yellow star  b. a red star  c. a green star  d. a blue star  e. an orange star.

The T Tauri stage begins when:
 a. the nebula contracts  b. when hydrogen fusion starts  c. it starts differentiating due to gravity
 d. supernova processes start  e. helium fusion to heavier elements starts.

The nine planets of our solar system:
 a. have the same origin as the sun  b. began some 5 billion years ago  c. all formed from the same  materials    d. formed from a rapidly rotating nebula   e. all the above are correct

The reason the inner planets are smaller and denser than the outer planets is:
 a. they formed from a different nebula  b. they formed later   c. their nebula had a different   composition    d. temperatures were different     e. they are not that different from the outer planets