PSU ASTRO ZERO ZERO ONE UNIT THREE
EXAM 2026 FULL QUESTIONS WITH
CORRECT ANSWERS GRADED A+
⩥ Like how we humans, and animals, etc., all glow in? Answer: Infrared
⩥ How many earth's can you fit in the sun's volume? Answer: A million
⩥ About how much of the total mass of all the objects in the Solar
System is contained in the sun? Answer: 99%
⩥ What physical process generate the energy of the sun? Answer:
Nuclear fusion
⩥ How many protons does a hydrogen atom have? Answer: One proton,
and the different forms can have one or two neutrons
⩥ 4He has? Answer: Two protons because it is helium and two neutrons
to make 4 total particles in the nucleus
⩥ What is the first step in the p-p chain? Answer: A proton combines
with a proton to make Hydrogen-2 (deuterium)
, ⩥ What is the second step in the p-p chain? Answer: There was a big
burst of energy and the reaction created Hydrogen-2 (deuterium)
⩥ Why is there a big burst of energy in the p-p chain? Answer: Because
the mass of the particles starting the reaction is more than that of the
products. Mass is converted to energy via E=mc^2
⩥ What is the third step in the p-p chain? Answer: Hydrogen-2
combined with a proton to make Helium-3
⩥ What is the fourth step in the p-p chain? Answer: Radiation/energy is
released and we end up with Helium-3
⩥ What is the final step in the p-p chain? Answer: Helium-3 combines
with Helium-3 to make Helium-4 and two protons then a burst of energy
happens and Helium-4 is produced, with two protons moving off to the
side
⩥ What is the general result of the proton-proton chain? Answer: 4 H ->
He+energy+other products
⩥ The corona of the Sun: Answer: Is visible during a solar eclipse
⩥ In the convective zone of the Sun: Answer: Columns of hot gas rise,
cool, and descend
EXAM 2026 FULL QUESTIONS WITH
CORRECT ANSWERS GRADED A+
⩥ Like how we humans, and animals, etc., all glow in? Answer: Infrared
⩥ How many earth's can you fit in the sun's volume? Answer: A million
⩥ About how much of the total mass of all the objects in the Solar
System is contained in the sun? Answer: 99%
⩥ What physical process generate the energy of the sun? Answer:
Nuclear fusion
⩥ How many protons does a hydrogen atom have? Answer: One proton,
and the different forms can have one or two neutrons
⩥ 4He has? Answer: Two protons because it is helium and two neutrons
to make 4 total particles in the nucleus
⩥ What is the first step in the p-p chain? Answer: A proton combines
with a proton to make Hydrogen-2 (deuterium)
, ⩥ What is the second step in the p-p chain? Answer: There was a big
burst of energy and the reaction created Hydrogen-2 (deuterium)
⩥ Why is there a big burst of energy in the p-p chain? Answer: Because
the mass of the particles starting the reaction is more than that of the
products. Mass is converted to energy via E=mc^2
⩥ What is the third step in the p-p chain? Answer: Hydrogen-2
combined with a proton to make Helium-3
⩥ What is the fourth step in the p-p chain? Answer: Radiation/energy is
released and we end up with Helium-3
⩥ What is the final step in the p-p chain? Answer: Helium-3 combines
with Helium-3 to make Helium-4 and two protons then a burst of energy
happens and Helium-4 is produced, with two protons moving off to the
side
⩥ What is the general result of the proton-proton chain? Answer: 4 H ->
He+energy+other products
⩥ The corona of the Sun: Answer: Is visible during a solar eclipse
⩥ In the convective zone of the Sun: Answer: Columns of hot gas rise,
cool, and descend
