What causes sunspots Study guides, Class notes & Summaries

PSU Astro 7N Exam 2 Questions With Answers 100% Correct!!

PSU Astro 7N Exam 2Hydrogen and Helium What gases make up the sun? Magnetic Activity What causes sunspots? Helium-4 What is made from 4 protons during fusion in the sun? Deuterium Nucleus (and released energy) Step 1 of P-P Chain What forms when two protons collide at very high speeds? Helium-3 Nucleus Step 2 of P-P Chain When deuterium and a proton collide it makes this

what is the sun comprised of? - 73% hydrogen 25% helium why is the sun stable? - outward force of gas pressure; inward force of gravity Where does the gas pressure in the sun come from? - nuclear fusion reactions in the core at temperatures of 15 million degrees What is the diameter of the sun compared to earth? mass? luminosity (compared to 100W lightbulbs? - diameter-109x; mass-333,000; luminosity- 4 x 10^24 What percent of mass in the solar system comes from the sun? - 99.9% how long h...

what is the sun comprised of? - 73% hydrogen 25% helium why is the sun stable? - outward force of gas pressure; inward force of gravity Where does the gas pressure in the sun come from? - nuclear fusion reactions in the core at temperatures of 15 million degrees What is the diameter of the sun compared to earth? mass? luminosity (compared to 100W lightbulbs? - diameter-109x; mass-333,000; luminosity- 4 x 10^24 What percent of mass in the solar system comes from the sun? - 99.9% how long h...

What causes sunspots? - -Magnetic fields breaking through the photosphere inhibit gas motion where the field is strong. What is spectroscopy? - -What we learn from analyzing how light interacts with matter. What does an absorption spectrum look like? - -Mostly a band of colors with notable dark lines interspaced throughout the colored band. What does an emission spectrum look like? - -Mostly dark with notable colored lines interspaced throughout the darkness. What's the difference between...

Which of the following relationships is the key to nuclear reactions in a star's core remaining under control? a. Luminosity depends on mass. b. Pressure depends on temperature. c. Density depends on mass. d. Weight depends on temperature. - b What is opacity? a. the balance between the pressure and force of gravity inside a star b. the force that binds protons and neutrons together to form a nucleus c. the temperature and density at which a gas will undergo thermonuclear fusion d. a...

PSU Astro 7N Exam 2 Quizzes & Ans…

Bacteria Size - Answer They can travel easily from place to place through air or water because of their tiny size. Flagella - Answer AKA: Cilia Hair-like projections that help bacilli and spirilli move by themselves. Virus - Answer A sub-microscopic infectious agent that replicates itself only within cells of living hosts. They cannot live on their own and need a "host" to survive. Virus Size - Answer They are smaller than bacteria but cause more serious diseases such as herpes, influen...

Bio 106 final sustainable development means A. providing ever increasing amount of educate housing B. utilizing an every increasing quality of natural resources C. improving peoples lives in the present in a away that can continue far into the future D. continues growth indefinitely as long as it can be paid off - ANS C environmental science is a A. special set of problem solving skills B. theoretical approach in interpreting the environments C. way to see the world in sci...

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