6.Question 61 pts
Hydrogen and helium gas can come together to form gas clouds called:
nebulas
black holes
protostars
Asteroids
7.Question 71 pts
Dense areas of a nebula can become unstable and collapse into:
galaxies
black dwarfs
bok globules
Asteroids
8.Question 81 pts
The centers of bok globules will become a young star called:
nebulas
bok globules
asteroids
Protostars
9.Question 91 pts
When a young star begins nuclear fusion and stops collapsing it is called a:
protostar
white dwarf
red giant
main-sequence star
10.Question 101 pts
Low-mass main-sequence stars are also called:
white dwarfs
protostars
brown dwarfs
red dwarfs
6-Nebulas- it is the cloud of gases in very early stage of planet formation.
7- Bok globules - mainly consist of hydrogen and helium
8- protostar
9- protostar- it gather its mass from its parent
10 Red dwarf
6.Question 61 pts Hydrogen and helium gas can come together to form gas clouds called: nebulas black holes protostars As...
choose A B C D QUESTION 1 Star formation in giant gas clouds is a result of competition between which forces? Light and rotation Light and dark Rotation and gas pressure Gravity and gas pressure 10 points QUESTION 2 What effect sets the largest size a star can have? The forming star is shining so strongly that it blows the collapsing gas cloud apart. If the star was any larger it would instantly form a Black Hole. If the...
5) A star (no matter what its mass) spends most of its life Select one: a. as a protostar. b. as a main-sequence star. c. as a planetary nebula. d. as a red giant or supergiant. 6) What is the ultimate fate of an isolated white dwarf? Select one: a. It will cool down and become a cold black dwarf. b. As gravity overwhelms the electron degeneracy pressure, it will explode as a nova. c. As gravity overwhelms the electron...