Astronomy 100—Exam 1
... A. A force that larger objects exert on smaller ones. B. The pressure of the atmosphere on us. C. An attraction force that exists only among astronomical objects D. A force that keeps electrons on their orbits in atoms. E. The attraction force between any two objects with mass. ...
... A. A force that larger objects exert on smaller ones. B. The pressure of the atmosphere on us. C. An attraction force that exists only among astronomical objects D. A force that keeps electrons on their orbits in atoms. E. The attraction force between any two objects with mass. ...
Star Formation
... • The time required for an interstellar cloud to become a main sequence star depends strongly on its mass • The most massive O stars reach the 10 million Kelvin needed to start fusion in a million years (1/50 time taken by sun) • An M-type star less massive than our sun takes one billion years to fo ...
... • The time required for an interstellar cloud to become a main sequence star depends strongly on its mass • The most massive O stars reach the 10 million Kelvin needed to start fusion in a million years (1/50 time taken by sun) • An M-type star less massive than our sun takes one billion years to fo ...
Ellipses
... was the center of the Universe. This would later be disproved by astronomers. Johan Kepler discovered the elliptical orbit. Kepler was the first person to theorize that the planets actually move in ovaloid orbits. The equation he used to prove this would later become known as the Planetary Laws of M ...
... was the center of the Universe. This would later be disproved by astronomers. Johan Kepler discovered the elliptical orbit. Kepler was the first person to theorize that the planets actually move in ovaloid orbits. The equation he used to prove this would later become known as the Planetary Laws of M ...
Across 2. a slightly cooler region on the surface of the sun, caused
... 125. hottest planet in the solar system 126. the name of the biggest volcano in the solar system 127. constellation we call "the scorpion" 129. the type of asteroids that are the most rocky ones 130. the "north star" 131. what happens to light when a star is moving away from us quickly 132. the caus ...
... 125. hottest planet in the solar system 126. the name of the biggest volcano in the solar system 127. constellation we call "the scorpion" 129. the type of asteroids that are the most rocky ones 130. the "north star" 131. what happens to light when a star is moving away from us quickly 132. the caus ...
timeline
... 1564-1642 AD - Galileo Galilei first uses the telescope to observe the skies. Discovers sunspots, four major satellites on Jupiter (1610), and Venus' phases. Defends Copernican theory in Dialogo sopra i due massimi sistemi del mondo (Dialogue of the Two Chief Systems of the World), 1632 1571-1630 AD ...
... 1564-1642 AD - Galileo Galilei first uses the telescope to observe the skies. Discovers sunspots, four major satellites on Jupiter (1610), and Venus' phases. Defends Copernican theory in Dialogo sopra i due massimi sistemi del mondo (Dialogue of the Two Chief Systems of the World), 1632 1571-1630 AD ...
vert strand 6
... Observe the change in time and location of moon rise, moon set, and the moon’s appearance relative to time of day and month over several months, and note the pattern in this change Recognize the moon rises later each day due to its revolution around the Earth in a counterclockwise direction Recogniz ...
... Observe the change in time and location of moon rise, moon set, and the moon’s appearance relative to time of day and month over several months, and note the pattern in this change Recognize the moon rises later each day due to its revolution around the Earth in a counterclockwise direction Recogniz ...
PowerPoint
... balance point (center of mass) for a teeter-totter. Archimedes discovered that the balance point (center of mass) for a board with masses m1 and m2 at each end satisfies m1r1=m2r2 (Law of the Lever). ...
... balance point (center of mass) for a teeter-totter. Archimedes discovered that the balance point (center of mass) for a board with masses m1 and m2 at each end satisfies m1r1=m2r2 (Law of the Lever). ...
Stars PowerPoint Slides
... • From peak in continuous spectrum or matching continuous spectrum to that of a blackbody –Assume radiate somewhat like blackbodies (Planck curve) ...
... • From peak in continuous spectrum or matching continuous spectrum to that of a blackbody –Assume radiate somewhat like blackbodies (Planck curve) ...
How the universe works – Answer Key Star dust is the building
... Star dust is the building blocks of life. Every atom in your body was produced inside the fiery core of the sun. All life begins with stars. In our galaxy there are over 100 billion stars and in the universe there are over 100 billion galaxies. There are more stars than there are grains of sand on e ...
... Star dust is the building blocks of life. Every atom in your body was produced inside the fiery core of the sun. All life begins with stars. In our galaxy there are over 100 billion stars and in the universe there are over 100 billion galaxies. There are more stars than there are grains of sand on e ...
Jupiter is 90000 miles in diameter. It is 10 times the size of the earth
... dark regions called belts, that run parallel to the equator. The zones are higher in altitude than the belts, and are lower in temperature. It is believed that the belts represent descending areas of low pressure. Jupiter radiates heat energy out to space by way of convection. The zones carry energy ...
... dark regions called belts, that run parallel to the equator. The zones are higher in altitude than the belts, and are lower in temperature. It is believed that the belts represent descending areas of low pressure. Jupiter radiates heat energy out to space by way of convection. The zones carry energy ...
Another Old Final
... 6. The galaxy NGC1275 is observed to contain bright blue globular clusters. Explain why these are assumed recent and why this is evidence of a possible recent galactic collision or other drastic event that triggered their formation. 7. I have often, in class, described close binary systems as stars ...
... 6. The galaxy NGC1275 is observed to contain bright blue globular clusters. Explain why these are assumed recent and why this is evidence of a possible recent galactic collision or other drastic event that triggered their formation. 7. I have often, in class, described close binary systems as stars ...
Return both exam and scantron sheet when you
... (a) corona. (b) chromosphere. (c) ionosphere. (d) photosphere. 45. The neutrinos interact with other elementary particles via (a) electrical force. (b) magnetic force. (c) strong nuclear force. (d) weak nuclear force. 46. The solar neutrino problem was resolved by experiments in (a) Homestake mine. ...
... (a) corona. (b) chromosphere. (c) ionosphere. (d) photosphere. 45. The neutrinos interact with other elementary particles via (a) electrical force. (b) magnetic force. (c) strong nuclear force. (d) weak nuclear force. 46. The solar neutrino problem was resolved by experiments in (a) Homestake mine. ...
Chapter 21 notes - Clinton Public Schools
... most of the water and other ice forming materials vaporized: most gases escaped the gravity of the planets that were forming in this region. Inner planets: small and rocky Outer Planets: farther from sun, much cooler: planets in this region grew, their gravity increased and they were able to capture ...
... most of the water and other ice forming materials vaporized: most gases escaped the gravity of the planets that were forming in this region. Inner planets: small and rocky Outer Planets: farther from sun, much cooler: planets in this region grew, their gravity increased and they were able to capture ...
Name - MIT
... 16) A galaxy is 3,000 light years away and we observe light from that galaxy. We are looking at the galaxy as it appeared … A) B) C) D) E) ...
... 16) A galaxy is 3,000 light years away and we observe light from that galaxy. We are looking at the galaxy as it appeared … A) B) C) D) E) ...
Earth Science Exam Review 1
... 4. Which characteristic below most likely accounts for our limited knowledge of galaxies? A. their tiny size B. their magnetic cores C. their inability to produce light D. their distance from Earth ...
... 4. Which characteristic below most likely accounts for our limited knowledge of galaxies? A. their tiny size B. their magnetic cores C. their inability to produce light D. their distance from Earth ...
951 Gaspra
... 1. Small objects in the solar system are leftovers that never accreted into planets 2. Minor planets mostly orbit between Mars and Jupiter 3. Comets formed in the outer solar system and were flung outward by close encounters with other planets 4. Comets can be trapped in the inner solar system by pl ...
... 1. Small objects in the solar system are leftovers that never accreted into planets 2. Minor planets mostly orbit between Mars and Jupiter 3. Comets formed in the outer solar system and were flung outward by close encounters with other planets 4. Comets can be trapped in the inner solar system by pl ...
Unit 7 Astronomy
... B. Terrestrial Observations 1. There are two main motions of Earth: motion of one object around another a. Revolution: The ___________________________________________ ____________________________________________ object. The planets revolve around the Sun. Moons ...
... B. Terrestrial Observations 1. There are two main motions of Earth: motion of one object around another a. Revolution: The ___________________________________________ ____________________________________________ object. The planets revolve around the Sun. Moons ...
Jumping on Another Planet!
... decreases with the square of the distance from the object’s centre. If this distance is doubled, the force exerted will be four times less. If the distance is tripled, the force will be nine times less, and so on. Let’s look at an example. Suppose two planets have the same mass but one has a radius ...
... decreases with the square of the distance from the object’s centre. If this distance is doubled, the force exerted will be four times less. If the distance is tripled, the force will be nine times less, and so on. Let’s look at an example. Suppose two planets have the same mass but one has a radius ...
What is a scientific model?
... • He proposed Sun-centered model presented in Concerning the Revolutions of the Heavenly Spheres (published in 1543, a few weeks before he died). • He used the model to determine layout of the solar system (planetary distances in AUs and orbital periods) But: • This model was no more accurate tha ...
... • He proposed Sun-centered model presented in Concerning the Revolutions of the Heavenly Spheres (published in 1543, a few weeks before he died). • He used the model to determine layout of the solar system (planetary distances in AUs and orbital periods) But: • This model was no more accurate tha ...
Stephen Ashworth
... the lifetime of the Solar System. Venus, Earth and Mars therefore define three distinct orbital zones, each of which is occupied by a planet. The largest occupant of the Asteroid Belt, Ceres, on the other hand, accounts for only about onethird of the mass found today in the orbital zone that would ...
... the lifetime of the Solar System. Venus, Earth and Mars therefore define three distinct orbital zones, each of which is occupied by a planet. The largest occupant of the Asteroid Belt, Ceres, on the other hand, accounts for only about onethird of the mass found today in the orbital zone that would ...
Summary: Stellar Distances
... Determining the Tangential Velocity The proper motion of a star, µ , is the annual rate at which its location (direction) on the celestial sphere changes. (This is in addition to the annual parallactic motion.) It is usually expressed in seconds-of-arc per year. Tangential velocities are obtained b ...
... Determining the Tangential Velocity The proper motion of a star, µ , is the annual rate at which its location (direction) on the celestial sphere changes. (This is in addition to the annual parallactic motion.) It is usually expressed in seconds-of-arc per year. Tangential velocities are obtained b ...
A Binary Mass-Orbit Nomenclature for Planetary Bodies
... the lifetime of the Solar System. Venus, Earth and Mars therefore define three distinct orbital zones, each of which is occupied by a planet. The largest occupant of the Asteroid Belt, Ceres, on the other hand, accounts for only about onethird of the mass found today in the orbital zone that would ...
... the lifetime of the Solar System. Venus, Earth and Mars therefore define three distinct orbital zones, each of which is occupied by a planet. The largest occupant of the Asteroid Belt, Ceres, on the other hand, accounts for only about onethird of the mass found today in the orbital zone that would ...
Planetary habitability
Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia. As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favourable to life's flourishing—in particular those factors that have sustained complex, multicellular organisms and not just simpler, unicellular creatures. Research and theory in this regard is a component of planetary science and the emerging discipline of astrobiology.An absolute requirement for life is an energy source, and the notion of planetary habitability implies that many other geophysical, geochemical, and astrophysical criteria must be met before an astronomical body can support life. In its astrobiology roadmap, NASA has defined the principal habitability criteria as ""extended regions of liquid water, conditions favourable for the assembly of complex organic molecules, and energy sources to sustain metabolism.""In determining the habitability potential of a body, studies focus on its bulk composition, orbital properties, atmosphere, and potential chemical interactions. Stellar characteristics of importance include mass and luminosity, stable variability, and high metallicity. Rocky, terrestrial-type planets and moons with the potential for Earth-like chemistry are a primary focus of astrobiological research, although more speculative habitability theories occasionally examine alternative biochemistries and other types of astronomical bodies.The idea that planets beyond Earth might host life is an ancient one, though historically it was framed by philosophy as much as physical science. The late 20th century saw two breakthroughs in the field. The observation and robotic spacecraft exploration of other planets and moons within the Solar System has provided critical information on defining habitability criteria and allowed for substantial geophysical comparisons between the Earth and other bodies. The discovery of extrasolar planets, beginning in the early 1990s and accelerating thereafter, has provided further information for the study of possible extraterrestrial life. These findings confirm that the Sun is not unique among stars in hosting planets and expands the habitability research horizon beyond the Solar System.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently. On 4 November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. 11 billion of these estimated planets may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists.