Cosmology Unit – FINAL EXAM PRACTICE TEST
... c. the sudden expansion of the universe from a hot, dense state d. the continued evolution of the universe, ending with the Big Crunch 9. Nucleosynthesis began when _____ and ended when _____. a. the Big Bang occurred; the Big Crunch occurred b. nuclear reactions could first occur; matter had conden ...
... c. the sudden expansion of the universe from a hot, dense state d. the continued evolution of the universe, ending with the Big Crunch 9. Nucleosynthesis began when _____ and ended when _____. a. the Big Bang occurred; the Big Crunch occurred b. nuclear reactions could first occur; matter had conden ...
A105 Stars and Galaxies - Indiana University Astronomy
... supports the Big Bang Theory • The Universe is expanding (and cooling) from an initial, dense state • Radiation left over from the Big Bang is now detected in the form of microwaves—the cosmic microwave background—which we can observe with a radio telescope • Observations of helium and other light e ...
... supports the Big Bang Theory • The Universe is expanding (and cooling) from an initial, dense state • Radiation left over from the Big Bang is now detected in the form of microwaves—the cosmic microwave background—which we can observe with a radio telescope • Observations of helium and other light e ...
The Universe
... galaxies. Many of them are surrounded by discs of material. As the discs swirl around them like a whirlpool, they become extremely hot and give off X-rays. Black holes come in many different sizes. Many of them are only a few times more massive than the Sun. ...
... galaxies. Many of them are surrounded by discs of material. As the discs swirl around them like a whirlpool, they become extremely hot and give off X-rays. Black holes come in many different sizes. Many of them are only a few times more massive than the Sun. ...
S03 from fusion to all the elements.notebook
... to overcome the usual electromagnetic repulsion of nuclei, allowing nuclear __________ to occur. helium All stars live by fusing hydrogen into _________. In the first step of the process, two hydrogen atoms deuterium fuse to form __________. In the next step, another hydrogen atom fuses with the de ...
... to overcome the usual electromagnetic repulsion of nuclei, allowing nuclear __________ to occur. helium All stars live by fusing hydrogen into _________. In the first step of the process, two hydrogen atoms deuterium fuse to form __________. In the next step, another hydrogen atom fuses with the de ...
The Big Bang Theory:
... D = distance of galaxy to earth • Galaxies are getting farther apart as time progresses, therefore the universe is expanding. – Not only is it expanding… it’s accelerating! ...
... D = distance of galaxy to earth • Galaxies are getting farther apart as time progresses, therefore the universe is expanding. – Not only is it expanding… it’s accelerating! ...
Theories
... THE BIG BANG THEORY The most commonly accepted theory today of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density a ...
... THE BIG BANG THEORY The most commonly accepted theory today of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density a ...
Slide 1
... The Universe contains billions of galaxies, each containing millions or billions of stars. The space between the stars and galaxies is largely empty. ...
... The Universe contains billions of galaxies, each containing millions or billions of stars. The space between the stars and galaxies is largely empty. ...
Document
... • Conversely, the fission of a nucleus with large A, is energetically favored, i.e. the fission fragments are more bound and the fission process liberates ...
... • Conversely, the fission of a nucleus with large A, is energetically favored, i.e. the fission fragments are more bound and the fission process liberates ...
Quantum Tunneling
... The study of gamma rays from radioactive nuclei suggests that nuclei, too, have energy levels. However, using quantum mechanics to calculate such levels is much harder here, because nuclear particles are much more tightly bound, and nuclear forces are more complicated. Still, at least in some approx ...
... The study of gamma rays from radioactive nuclei suggests that nuclei, too, have energy levels. However, using quantum mechanics to calculate such levels is much harder here, because nuclear particles are much more tightly bound, and nuclear forces are more complicated. Still, at least in some approx ...
He fusion
... The energy from stars comes from nuclear fusion in the core. Light nuclei fuse together & release energy - it takes less “binding energy” to hold the slightly bigger nucleus together than it did to hold the ...
... The energy from stars comes from nuclear fusion in the core. Light nuclei fuse together & release energy - it takes less “binding energy” to hold the slightly bigger nucleus together than it did to hold the ...
Dec. 6 - UF Physics
... Origins of the Big Bang Theory • George Gamow (1948) suggested that if the universe was created with a “hot Big Bang”, then: – Various elements, such as H and He, would be produced for a few minutes immediately after the Big Bang due to the extremely high temperatures and density of the universe at ...
... Origins of the Big Bang Theory • George Gamow (1948) suggested that if the universe was created with a “hot Big Bang”, then: – Various elements, such as H and He, would be produced for a few minutes immediately after the Big Bang due to the extremely high temperatures and density of the universe at ...
A Sense of Time
... Understanding has increased at breathtaking pace over the last 30 years o Observational astronomy at wavelengths other than visible light (RadioFrequency, X-Ray, Gamma-Ray, Ultraviolet, ...) has become more commonplace We have begun to appreciate that the Universe is anywhere from an orderly sta ...
... Understanding has increased at breathtaking pace over the last 30 years o Observational astronomy at wavelengths other than visible light (RadioFrequency, X-Ray, Gamma-Ray, Ultraviolet, ...) has become more commonplace We have begun to appreciate that the Universe is anywhere from an orderly sta ...
3OriginoftheUniverseandSS
... • The universe had no beginning (no big bang) and has no end RECENT DEVELOPMENTS: Inflationary Theory - predicts that there was a sudden expansion when the universe was very young, more extreme than predicted by the big bang theory! • Considered to be a “revised” Big Bang theory • The universe expan ...
... • The universe had no beginning (no big bang) and has no end RECENT DEVELOPMENTS: Inflationary Theory - predicts that there was a sudden expansion when the universe was very young, more extreme than predicted by the big bang theory! • Considered to be a “revised” Big Bang theory • The universe expan ...
Name
... 11. Explain the big bang theory in as much detail as possible. Make sure you answer the following questions: 1. Is the universe expanding or getting smaller? 2. What evidence did the WMAP provide scientists about the big bang theory? 3. Is the universe cooling or getting hotter? 4. How has the amou ...
... 11. Explain the big bang theory in as much detail as possible. Make sure you answer the following questions: 1. Is the universe expanding or getting smaller? 2. What evidence did the WMAP provide scientists about the big bang theory? 3. Is the universe cooling or getting hotter? 4. How has the amou ...
Big Bang
... Patterns of structure observed by WMAP tell us “genetic code” of universe. WMAP is the Wilkinson Microwave Anisotropy Probe satellite which has been mapping the cosmic microwave background. ...
... Patterns of structure observed by WMAP tell us “genetic code” of universe. WMAP is the Wilkinson Microwave Anisotropy Probe satellite which has been mapping the cosmic microwave background. ...
HOT Big Bang
... hydrogen is a gas of atoms. Much of the interstellar gas in our Galaxy is atomic hydrogen. density ≈ 10 atoms/cm3 T ≈ 100 K ...
... hydrogen is a gas of atoms. Much of the interstellar gas in our Galaxy is atomic hydrogen. density ≈ 10 atoms/cm3 T ≈ 100 K ...
Section 4.4: Where did the elements come from?
... the centers of stars billions of years ago, shortly after the universe was formed in a violent explosion called the big bang. ...
... the centers of stars billions of years ago, shortly after the universe was formed in a violent explosion called the big bang. ...
How do stars shine?
... the famous equation E=mc2, and suddenly new possibilities opened up for sources of power. Einstein’s famous equation means we can convert mass into energy, and c, being the speed of light, and a very big number, then squared, means a small amount of mass can make a lot of energy. It was known throug ...
... the famous equation E=mc2, and suddenly new possibilities opened up for sources of power. Einstein’s famous equation means we can convert mass into energy, and c, being the speed of light, and a very big number, then squared, means a small amount of mass can make a lot of energy. It was known throug ...
PHY320 Glossary of Terms - The University of Sheffield
... massive star which has proceeded to the end of the fusion sequence. With no further energyproducing fusion reactions taking place, the iron core shrinks and heats up until there are thermal photons with sufficient energy to break up the 56Fe nuclei. Primordial Nucleosynthesis is the production of ch ...
... massive star which has proceeded to the end of the fusion sequence. With no further energyproducing fusion reactions taking place, the iron core shrinks and heats up until there are thermal photons with sufficient energy to break up the 56Fe nuclei. Primordial Nucleosynthesis is the production of ch ...
The Big Bang
... the matter and energy in the universe was then concentrated into a single place. • The big bang shot the concentrated matter and energy in all directions. ...
... the matter and energy in the universe was then concentrated into a single place. • The big bang shot the concentrated matter and energy in all directions. ...
The Sun`s Size, Heat, and Structure
... size of a milk-bottle cap (about 3 centimeters), then the diameter of the largest star known, Epsilon Aurigae, would be the size of a football field. ...
... size of a milk-bottle cap (about 3 centimeters), then the diameter of the largest star known, Epsilon Aurigae, would be the size of a football field. ...
RADIUS (6371 KM) - Department of Earth and Planetary Sciences
... Star (like our sun)'s energy comes from combining light elements into heavier elements by fusion, or "nuclear burning" Hydrogen “burning” = fusion of 4 hydrogen nuclei (protons) into helium nucleus (2 protons + 2 neutrons) Forming helium from hydrogen gives off lots of energy (a natural hydrogen bom ...
... Star (like our sun)'s energy comes from combining light elements into heavier elements by fusion, or "nuclear burning" Hydrogen “burning” = fusion of 4 hydrogen nuclei (protons) into helium nucleus (2 protons + 2 neutrons) Forming helium from hydrogen gives off lots of energy (a natural hydrogen bom ...
History of the universe timeline
... Nuclei of hydrogen, helium, lithium and other light elements form. ...
... Nuclei of hydrogen, helium, lithium and other light elements form. ...