AST 443
... 8. Calculate the average density of a red-giant core of 0.25 solar-mass and radius 15,000 km. Compare this with the average density of the giant’s envelope, if it has a 0.5 solar-mass and its radius is 0.5 A.U. Compare each with the central density of the Sun. ...
... 8. Calculate the average density of a red-giant core of 0.25 solar-mass and radius 15,000 km. Compare this with the average density of the giant’s envelope, if it has a 0.5 solar-mass and its radius is 0.5 A.U. Compare each with the central density of the Sun. ...
Our Sun is a Star:
... What is surprising about the actual scaled distances? (Your opinion) Can you answer the flip-up question: What objects have tails created by solar wind? What are the dark spots on this picture? (Hint: they are not sunspots.) ...
... What is surprising about the actual scaled distances? (Your opinion) Can you answer the flip-up question: What objects have tails created by solar wind? What are the dark spots on this picture? (Hint: they are not sunspots.) ...
The Sun - rosedalegrade9astronomy
... The Sun – Is our nearest star. It is 5 billion years old. – It will last another 5 billion years – Has the mass of more than 300 000 Earths – So big that gravity forces everything together so tight that there are nuclear reactions and a great amount of heat. -Hydrogen atoms are squashed together to ...
... The Sun – Is our nearest star. It is 5 billion years old. – It will last another 5 billion years – Has the mass of more than 300 000 Earths – So big that gravity forces everything together so tight that there are nuclear reactions and a great amount of heat. -Hydrogen atoms are squashed together to ...
HW #01
... What goes on in the core, Envelope (radiative zone, and convection zone) of the Sun? How does nuclear fusion produce energy? Why does nuclear fusion need high temperatures and densities? Why is it so hard to develop nuclear fusion as a dependable power source on Earth? Why will chemical reactions or ...
... What goes on in the core, Envelope (radiative zone, and convection zone) of the Sun? How does nuclear fusion produce energy? Why does nuclear fusion need high temperatures and densities? Why is it so hard to develop nuclear fusion as a dependable power source on Earth? Why will chemical reactions or ...
The Solar System and the Universe
... 12. The outermost atmosphere of the sun is called the ___________________. As it extends out from the surface of the sun it forms the ________________ winds. 13. What are sunspots and how are they formed? ...
... 12. The outermost atmosphere of the sun is called the ___________________. As it extends out from the surface of the sun it forms the ________________ winds. 13. What are sunspots and how are they formed? ...
Ay 101 - The Physics of Stars – fall 2015 -... Homework 3, due Friday Oct 23 at class (2 pm)
... 2. (10 points) (a) The amount of energy we receive from the Sun per cm2 per second just above the atmosphere of the Earth is the solar constant. It has a value of S = πf⊙ = 1.38 × 106 erg cm−2 s−1 . Using the distance from the Earth to the Sun, what is the surface flus πF on the Sun. What effective ...
... 2. (10 points) (a) The amount of energy we receive from the Sun per cm2 per second just above the atmosphere of the Earth is the solar constant. It has a value of S = πf⊙ = 1.38 × 106 erg cm−2 s−1 . Using the distance from the Earth to the Sun, what is the surface flus πF on the Sun. What effective ...
Astronomy 115 Homework Set #1 – Due: Thursday, Feb
... 2. How many hydrogen atoms are converted to helium each second in order to power the Sun’s luminosity? To arrive at the solution, answer the following: (a) What is the mass of 4 hydrogen atoms? (b) What is the mass of 1 helium atom? (c) How much more mass is there in the 4 hydrogen atoms than in the ...
... 2. How many hydrogen atoms are converted to helium each second in order to power the Sun’s luminosity? To arrive at the solution, answer the following: (a) What is the mass of 4 hydrogen atoms? (b) What is the mass of 1 helium atom? (c) How much more mass is there in the 4 hydrogen atoms than in the ...
Section 14.7: The Sun
... To compare sizes, if the Sun is a basketball, the Earth would be the head of a pin ...
... To compare sizes, if the Sun is a basketball, the Earth would be the head of a pin ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... neutrinos. Neutrinos come straight from the core of the Sun to us, not interacting much at all with the outer layers of the Sun. If some other energy source generated all the heat necessary, but did not generate the neutrinos, we could tell that it wasn’t fusion. Even though the Sun would stay the s ...
... neutrinos. Neutrinos come straight from the core of the Sun to us, not interacting much at all with the outer layers of the Sun. If some other energy source generated all the heat necessary, but did not generate the neutrinos, we could tell that it wasn’t fusion. Even though the Sun would stay the s ...
DUNE: The Deep Underground Neutrino Experiment
... Neutrinos are the second most numerous type of particle in the Universe. These almost “invisible” particles are incredibly difficult to detect, passing freely through matter. However, as a result of a series of innovative large experiments in the last 20 years, we have learnt a great deal about neut ...
... Neutrinos are the second most numerous type of particle in the Universe. These almost “invisible” particles are incredibly difficult to detect, passing freely through matter. However, as a result of a series of innovative large experiments in the last 20 years, we have learnt a great deal about neut ...
the Sun - University of Redlands
... again transparent to light. – The hot convection cell tops radiate energy as a function of their temperature (5800 K). ...
... again transparent to light. – The hot convection cell tops radiate energy as a function of their temperature (5800 K). ...
The Earth in Space Scientific evidence indicates the universe is
... motion of objects in the universe. Early in the history of the universe, matter clumped together by gravitational attraction to form stars and galaxies. According to the Big Bang theory, the universe has been continually expanding at an increasing rate since its formation about 13.7 billion years ag ...
... motion of objects in the universe. Early in the history of the universe, matter clumped together by gravitational attraction to form stars and galaxies. According to the Big Bang theory, the universe has been continually expanding at an increasing rate since its formation about 13.7 billion years ag ...
The Sun as We See It Lecture 10, September 17, 2003
... Further properties of the Sun • The chemical composition of the Sun: cosmic composition • The luminosity of the Sun = 3.85E+26 Watts • The age of the Sun (how could we know this?) • Comparison of other objects (M4, Arcturus) ...
... Further properties of the Sun • The chemical composition of the Sun: cosmic composition • The luminosity of the Sun = 3.85E+26 Watts • The age of the Sun (how could we know this?) • Comparison of other objects (M4, Arcturus) ...
Friday, November 7 - Otterbein University
... Start: 4 protons End: Helium + neutrinos + energy Hydrogen fuses to Helium ...
... Start: 4 protons End: Helium + neutrinos + energy Hydrogen fuses to Helium ...
Structure of the Sun
... 2) In the core (unlike on Earth), the energy and pressure strip electrons away from the atomic nuclei. 3) The nuclei have positive charges, so they tend to push away from each other. Sue to high temperatures and pressure the nuclei are forced to fuse. 4) The most common nuclear fusion that occurs is ...
... 2) In the core (unlike on Earth), the energy and pressure strip electrons away from the atomic nuclei. 3) The nuclei have positive charges, so they tend to push away from each other. Sue to high temperatures and pressure the nuclei are forced to fuse. 4) The most common nuclear fusion that occurs is ...
summary of key concepts: week #1
... As well as sunspots, we can observe a `boiling’ pattern on the photosphere. Technically this is called granulation, and it’s the surface manifestation of a process called convection in which hot gas rises to the surface, loses energy and cools, before dropping back down. Convection is how the energ ...
... As well as sunspots, we can observe a `boiling’ pattern on the photosphere. Technically this is called granulation, and it’s the surface manifestation of a process called convection in which hot gas rises to the surface, loses energy and cools, before dropping back down. Convection is how the energ ...
Astro 101-001 Summer 2013 (Howard) Assignment #3 Due: Wed
... are hotter than the surrounding areas of the Sun; (b) They are extremely cold objects, as cold as Pluto; (c) They are extremely hot, but cooler than the surrounding areas of the Sun; (d) They are solid bodies floating on the surface of the Sun; (e) They are associated with areas of very low magnetic ...
... are hotter than the surrounding areas of the Sun; (b) They are extremely cold objects, as cold as Pluto; (c) They are extremely hot, but cooler than the surrounding areas of the Sun; (d) They are solid bodies floating on the surface of the Sun; (e) They are associated with areas of very low magnetic ...
