PHSC 102 2024-
2025 Exam
Question with
correct Answers
New Update
,we can't detect neutrinos. - correct answerfound fewer than expected.
Which of these active regions have the most energy?
Select one:
a.
prominences
b.
coronal mass ejections
c.
flares
d.
sunspots - correct answercoronal mass ejections
Hydrostatic equilibrium in our Sun is the balance between
Select one:
a.
pressure and radiation.
b.
gravitation and pressure.
c.
convection and gravitation.
d.
convection and radiation. - correct answergravitation and pressure
From inside out, put the structure of the Sun in correct order? - correct answer1 → radiation 2 →
convection zone, 3 → photosphere, 4 → chromosphere
The primary source of the Sun's energy is
Select one:
,a.
the slow release of heat left over from the Sun's formation.
b.
the fusing of hydrogen into helium.
c.
fission of heavy nuclei to lighter ones.
d.
the solar magnetic field. - correct answerthe fusing of hydrogen into helium.
Sunspots
Select one:
a.
come in pairs, representing the north and south magnetic fields.
b.
are always found close to the Sun's poles.
c.
are relatively constant in number every year.
d.
were most numerous during the Maunder Minimum. - correct answercome in pairs, representing the
north and south magnetic fields.
Which of the following is the most common type of star?
Select one:
a.
blue supergiants
b.
red giants
c.
, red dwarfs
d.
white dwarfs - correct answerred dwarfs
On the H-R diagram, the Sun lies
Select one:
a.
at the bottom left.
b.
about the middle of the main sequence.
c.
at the top right.
d.
at the top left. - correct answerabout the middle of the main sequence.
What is the single most important characteristic in determining how long a star lives?
Select one:
a.
mass
b.
luminosity
c.
distance
d.
radius - correct answermass
Star A and star B both have the same temperature, but star A has a larger luminosity. What can you infer
about the stars?
Select one:
2025 Exam
Question with
correct Answers
New Update
,we can't detect neutrinos. - correct answerfound fewer than expected.
Which of these active regions have the most energy?
Select one:
a.
prominences
b.
coronal mass ejections
c.
flares
d.
sunspots - correct answercoronal mass ejections
Hydrostatic equilibrium in our Sun is the balance between
Select one:
a.
pressure and radiation.
b.
gravitation and pressure.
c.
convection and gravitation.
d.
convection and radiation. - correct answergravitation and pressure
From inside out, put the structure of the Sun in correct order? - correct answer1 → radiation 2 →
convection zone, 3 → photosphere, 4 → chromosphere
The primary source of the Sun's energy is
Select one:
,a.
the slow release of heat left over from the Sun's formation.
b.
the fusing of hydrogen into helium.
c.
fission of heavy nuclei to lighter ones.
d.
the solar magnetic field. - correct answerthe fusing of hydrogen into helium.
Sunspots
Select one:
a.
come in pairs, representing the north and south magnetic fields.
b.
are always found close to the Sun's poles.
c.
are relatively constant in number every year.
d.
were most numerous during the Maunder Minimum. - correct answercome in pairs, representing the
north and south magnetic fields.
Which of the following is the most common type of star?
Select one:
a.
blue supergiants
b.
red giants
c.
, red dwarfs
d.
white dwarfs - correct answerred dwarfs
On the H-R diagram, the Sun lies
Select one:
a.
at the bottom left.
b.
about the middle of the main sequence.
c.
at the top right.
d.
at the top left. - correct answerabout the middle of the main sequence.
What is the single most important characteristic in determining how long a star lives?
Select one:
a.
mass
b.
luminosity
c.
distance
d.
radius - correct answermass
Star A and star B both have the same temperature, but star A has a larger luminosity. What can you infer
about the stars?
Select one:
