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Midterm 4 Stars
Test Description: Stars
Instructions: Answer all questions to get your test result.
1) What chracteristics are shown on the Hertzsprung Russell Diagram?
A
shape and color
B
distance and mass
C
temperature and luminosity
D
size and age
2) How would a hot star with low luminosity be classified?
A
red giant
B
white dwarf
C
protostar
D
double star
3) Who is credited with the nebular hypthesis?
A
Newton
B
Kepler
C
LePlace
D
Hertzsprung
4) What determines the lifespan of a star?
A
size
B
mass
C
brightness
D
temperature
5) What is produced when a dying giant or supergiant explodes?
A
quasar
B
protostar
C
double star
D
supernova
6) What is a rotating cloud of dust and gas that becones a star?
A
planeteimal
B
nebula
C
protostar
D
nova
7) What caused the solar nebula to condense to form the sun?
A
energy from collisions and pressure from density
B
enegy and heat from fusion
C
rotation and revolution
D
energy from high temperatures and pressure from gravity
8) What is produced in all phases of fusion in a star's core?
A
hydrogen
B
energy
C
protons
D
neutrons
9) What do all stars begin as?
A
black holes
B
planetesimals
C
protostars
D
nebula
10) Describe the temperature and luminosity of the sun on the Hertzsprung Russell Diagram.
A
cool and dim
B
medium temperature and medium luminosity
C
hot and bright
D
hot and dim
*select an answer for all questions
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