Stars Powerpoint
... to condense into a dense region called a Protostar • The Protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusion begins. ...
... to condense into a dense region called a Protostar • The Protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusion begins. ...
AnwerkeyTypes-of-stars-and-HR-diagram
... 2. How does surface temperature of White dwarf compares to red giants? __________________Higher______ 3. What is color of stars with highest Surface Temperature? ____________blue____________ 4. What is color of stars with lowest Surface Temperature? _______________Red_________ 5. List the colors fro ...
... 2. How does surface temperature of White dwarf compares to red giants? __________________Higher______ 3. What is color of stars with highest Surface Temperature? ____________blue____________ 4. What is color of stars with lowest Surface Temperature? _______________Red_________ 5. List the colors fro ...
The Inverse Square Law and Surface Area
... The diagram shows Earth Orbit around the Sun. The position of a nearby star changes by a tiny amount over a six month period. This allows us to use trigonometry to find its distance. The angles are extremely small. This direct method is the most accurate way of determining distance ...
... The diagram shows Earth Orbit around the Sun. The position of a nearby star changes by a tiny amount over a six month period. This allows us to use trigonometry to find its distance. The angles are extremely small. This direct method is the most accurate way of determining distance ...
PPT - University of Delaware
... Can observe light from stars Can apply physical laws and concepts to learn about stars ...
... Can observe light from stars Can apply physical laws and concepts to learn about stars ...
Theoretical Modeling of Massive Stars Mr. Russell University of Delaware
... Can observe light from stars Can apply physical laws and concepts to learn about stars ...
... Can observe light from stars Can apply physical laws and concepts to learn about stars ...
Star Life Cycle - GSHS Mrs. Francomb
... begin to collapse inward toward the core. • Just as during formation, when the material contracts, the temperature and pressure increase. • This newly generated heat temporarily counteracts the force of gravity, and the outer layers of the star are now pushed outward. • The star expands to larger th ...
... begin to collapse inward toward the core. • Just as during formation, when the material contracts, the temperature and pressure increase. • This newly generated heat temporarily counteracts the force of gravity, and the outer layers of the star are now pushed outward. • The star expands to larger th ...
Document
... 22. Massive stars cannot generate energy through iron fusion because a. iron fusion requires very high density. b. stars contain very little iron. c. no star can get hot enough for iron fusion. d. iron is the most tightly bound of all nuclei. e. massive stars supernova before they create an iron cor ...
... 22. Massive stars cannot generate energy through iron fusion because a. iron fusion requires very high density. b. stars contain very little iron. c. no star can get hot enough for iron fusion. d. iron is the most tightly bound of all nuclei. e. massive stars supernova before they create an iron cor ...
Our Community`s Place Among the Stars
... four hydrogen atoms fuse together to make one helium atom in a star’s core Some mass is “lost” in the reaction, because one helium atom has less mass than four hydrogen ...
... four hydrogen atoms fuse together to make one helium atom in a star’s core Some mass is “lost” in the reaction, because one helium atom has less mass than four hydrogen ...
What is the net result of the proton-proton chain? a. 2 protons make
... b. 12,300 K c. 15 million K d. 3,500 K e. 5,800 K The absolute magnitude of a star is its brightness as seen from a distance of: a. One million kilometers b. One astronomical unit (AU) c. One light year d. Ten parsecs e. Ten light years What are the two most important intrinsic properties used to c ...
... b. 12,300 K c. 15 million K d. 3,500 K e. 5,800 K The absolute magnitude of a star is its brightness as seen from a distance of: a. One million kilometers b. One astronomical unit (AU) c. One light year d. Ten parsecs e. Ten light years What are the two most important intrinsic properties used to c ...
Stars Notes
... • Outer layers continue to expand and form a planetary nebula • Remaining core is now a white dwarf which is dense and slowly cools and no longer produces energy ...
... • Outer layers continue to expand and form a planetary nebula • Remaining core is now a white dwarf which is dense and slowly cools and no longer produces energy ...
characteristics of stars
... close even though they are separated by large distance. Most of the stars outside the bulge are arranged in long ____________, called _________ which curve around the bulge. The entire Milky Way rotates around this bulge. The Milky Way Galaxy is called a ____________galaxy because of its circular, s ...
... close even though they are separated by large distance. Most of the stars outside the bulge are arranged in long ____________, called _________ which curve around the bulge. The entire Milky Way rotates around this bulge. The Milky Way Galaxy is called a ____________galaxy because of its circular, s ...
Stars with mass less than 0.5 solar masses
... faintest stars are at the bottom right. The diagonal band of stars running from the upper left to lower right is known as the Main Sequence and includes those stars which are converting hydrongen into helium in their cores under stable conditions (90% of all stars known). Red Giants or red Supergian ...
... faintest stars are at the bottom right. The diagonal band of stars running from the upper left to lower right is known as the Main Sequence and includes those stars which are converting hydrongen into helium in their cores under stable conditions (90% of all stars known). Red Giants or red Supergian ...
Stellar evolution
... - First occurs in a runaway process: "the helium flash". Energy from fusion goes into re-expanding and cooling the core. This slows fusion, so star gets dimmer again. - Then stable He -> C burning. Still have H -> He shell burning surrounding it. ...
... - First occurs in a runaway process: "the helium flash". Energy from fusion goes into re-expanding and cooling the core. This slows fusion, so star gets dimmer again. - Then stable He -> C burning. Still have H -> He shell burning surrounding it. ...
Hertzsprung2 - courses.psu.edu
... A final word about the stars in the night sky: * Majority of stars in the galaxy are low-luminosity cool stars (“red dwarfs”) ...
... A final word about the stars in the night sky: * Majority of stars in the galaxy are low-luminosity cool stars (“red dwarfs”) ...
PH109 Exploring the Universe, Test 3, Fall 2001 Please indicate the
... 31. All stars with masses equal to or greater than the sun expand to become a) red giants, b) super novae, c) white dwarfs, d) blue giants 32. About how old do astronomers think the sun is a) 10 billion years, b) 5 billion years, c) 10 million years, d) 5 millions years 33. A measurement of the para ...
... 31. All stars with masses equal to or greater than the sun expand to become a) red giants, b) super novae, c) white dwarfs, d) blue giants 32. About how old do astronomers think the sun is a) 10 billion years, b) 5 billion years, c) 10 million years, d) 5 millions years 33. A measurement of the para ...
Star project
... • Stars are luminous spheres of plasma that have their own gravity and have a fixed position in space. • They are extremely burning hot. • The nearest star to us is the sun. • They are made up of mainly hydrogen and helium, but have a little bit of other elements like oxygen and carbon as well. ...
... • Stars are luminous spheres of plasma that have their own gravity and have a fixed position in space. • They are extremely burning hot. • The nearest star to us is the sun. • They are made up of mainly hydrogen and helium, but have a little bit of other elements like oxygen and carbon as well. ...
Life Cycles of Stars
... • Different size stars go through similar life cycles, however they are different: 1) Low Mass Stars 2) Medium Mass Stars 3) High Mass Stars ...
... • Different size stars go through similar life cycles, however they are different: 1) Low Mass Stars 2) Medium Mass Stars 3) High Mass Stars ...
Chapter 25 - Notes Super Size
... • _________________ of stars representing mythological characters, animals, or familiar objects. • Most constellations come from the _________________. • The stars in a constellation may appear close, however each star can be _________________ of light-years away from each other. • There are _______ ...
... • _________________ of stars representing mythological characters, animals, or familiar objects. • Most constellations come from the _________________. • The stars in a constellation may appear close, however each star can be _________________ of light-years away from each other. • There are _______ ...
Star
A star is a luminous sphere of plasma held together by its own gravity. The nearest star to Earth is the Sun. Other stars are visible from Earth during the night, appearing as a multitude of fixed luminous points in the sky due to their immense distance from Earth. Historically, the most prominent stars were grouped into constellations and asterisms, and the brightest stars gained proper names. Extensive catalogues of stars have been assembled by astronomers, which provide standardized star designations.For at least a portion of its life, a star shines due to thermonuclear fusion of hydrogen into helium in its core, releasing energy that traverses the star's interior and then radiates into outer space. Once the hydrogen in the core of a star is nearly exhausted, almost all naturally occurring elements heavier than helium are created by stellar nucleosynthesis during the star's lifetime and, for some stars, by supernova nucleosynthesis when it explodes. Near the end of its life, a star can also contain degenerate matter. Astronomers can determine the mass, age, metallicity (chemical composition), and many other properties of a star by observing its motion through space, luminosity, and spectrum respectively. The total mass of a star is the principal determinant of its evolution and eventual fate. Other characteristics of a star, including diameter and temperature, change over its life, while the star's environment affects its rotation and movement. A plot of the temperature of many stars against their luminosities, known as a Hertzsprung–Russell diagram (H–R diagram), allows the age and evolutionary state of a star to be determined.A star's life begins with the gravitational collapse of a gaseous nebula of material composed primarily of hydrogen, along with helium and trace amounts of heavier elements. Once the stellar core is sufficiently dense, hydrogen becomes steadily converted into helium through nuclear fusion, releasing energy in the process. The remainder of the star's interior carries energy away from the core through a combination of radiative and convective processes. The star's internal pressure prevents it from collapsing further under its own gravity. Once the hydrogen fuel at the core is exhausted, a star with at least 0.4 times the mass of the Sun expands to become a red giant, in some cases fusing heavier elements at the core or in shells around the core. The star then evolves into a degenerate form, recycling a portion of its matter into the interstellar environment, where it will contribute to the formation of a new generation of stars with a higher proportion of heavy elements. Meanwhile, the core becomes a stellar remnant: a white dwarf, a neutron star, or (if it is sufficiently massive) a black hole.Binary and multi-star systems consist of two or more stars that are gravitationally bound, and generally move around each other in stable orbits. When two such stars have a relatively close orbit, their gravitational interaction can have a significant impact on their evolution. Stars can form part of a much larger gravitationally bound structure, such as a star cluster or a galaxy.