05-Circular motion.pptx
... → Something must provide the force – Centripetal force Centripetal force is NOT a force of nature. Any of the forces we discussed in Chapter 4 can play a role of centripetal force when object’s moving along a circle. To solve problems in uniform circular mo+on → apply the same set of rules prov ...
... → Something must provide the force – Centripetal force Centripetal force is NOT a force of nature. Any of the forces we discussed in Chapter 4 can play a role of centripetal force when object’s moving along a circle. To solve problems in uniform circular mo+on → apply the same set of rules prov ...
New Suns in the Cosmos?
... upsurge along the past 15 years, with the discovery of many extra-solar planetary systems, demonstrating that the Sun is not unique as a planet host star. In this context, the main question now is the extent to which the properties of the Sun and its planetary system can be considered as representat ...
... upsurge along the past 15 years, with the discovery of many extra-solar planetary systems, demonstrating that the Sun is not unique as a planet host star. In this context, the main question now is the extent to which the properties of the Sun and its planetary system can be considered as representat ...
Hot Jupiters Provoke Their Own Host Suns to Wobble
... Auroras tonight? And possibly Saturday night? A coronal mass ejection from the Sun hit the Earth around 8 this morning Eastern Daylight Time (12:00 UT), and another arrived a few hours later. They were not as strong as expected, but their effects may continue for more than a day. See our article: Po ...
... Auroras tonight? And possibly Saturday night? A coronal mass ejection from the Sun hit the Earth around 8 this morning Eastern Daylight Time (12:00 UT), and another arrived a few hours later. They were not as strong as expected, but their effects may continue for more than a day. See our article: Po ...
The Properties of Stars Early in its history, the universe organized
... Only a very small percentage of stars are close enough for us to measure their parallax angles accurately. However, with some stellar distances measured, astronomers could now begin to study the luminosities of the stars. The most obvious differences among the stars in the sky are their apparent br ...
... Only a very small percentage of stars are close enough for us to measure their parallax angles accurately. However, with some stellar distances measured, astronomers could now begin to study the luminosities of the stars. The most obvious differences among the stars in the sky are their apparent br ...
galileo and the discovery of the phases of venus
... uniform pattern of change. Galileo’s expression “when Venus began to be visible in the evening sky” can only refer to some time in the late spring or early summer of 1610. On the other hand, the expression “[a]fterwards I saw [Venus] growing in magnitude significantly, though always maintaining its ...
... uniform pattern of change. Galileo’s expression “when Venus began to be visible in the evening sky” can only refer to some time in the late spring or early summer of 1610. On the other hand, the expression “[a]fterwards I saw [Venus] growing in magnitude significantly, though always maintaining its ...
Kepler Mission: The Search for Earth-sized Planets
... For which of these star(s) will Kepler be able to detect transiting planets? ...
... For which of these star(s) will Kepler be able to detect transiting planets? ...
Starry Night Companion - Starry Night Education
... the sky, we were witnessing the universe revolving around us. It took the work of some bold and observant scientists, including the Polish astronomer Nicolaus Copernicus, to show us how wrong we had been: Instead of the center of the universe, Copernicus said, our world is one of many planets and mo ...
... the sky, we were witnessing the universe revolving around us. It took the work of some bold and observant scientists, including the Polish astronomer Nicolaus Copernicus, to show us how wrong we had been: Instead of the center of the universe, Copernicus said, our world is one of many planets and mo ...
Solar System Tables
... Planets’ orbits around the Sun are ellipses, not circles. Thus, they have a closest and farthest distance to the Sun. 2One astronomical unit is the average distance of the Earth to the Sun, 92,955,800 miles. 3Eccentricity is normally expressed as a decimal and represents the elongation of a Planet’s ...
... Planets’ orbits around the Sun are ellipses, not circles. Thus, they have a closest and farthest distance to the Sun. 2One astronomical unit is the average distance of the Earth to the Sun, 92,955,800 miles. 3Eccentricity is normally expressed as a decimal and represents the elongation of a Planet’s ...
Super Science Models
... because the Moon revolves around Earth as the Earth/Moon system revolves around the Sun. Just as half of Earth has daylight and the other half nighttime, about half of the Moon is lighted by the Sun while the other half is not lighted. The phases of the Moon depend on how much of the sunlit half can ...
... because the Moon revolves around Earth as the Earth/Moon system revolves around the Sun. Just as half of Earth has daylight and the other half nighttime, about half of the Moon is lighted by the Sun while the other half is not lighted. The phases of the Moon depend on how much of the sunlit half can ...
The Milky Way Model - University of Chicago
... have (and will) NEVER photograph or observe the Milky Way from outside of it. We are forever bound within our Galaxy and getting an exterior perspective would take many thousands of light-years, traveling at the speed of light of course. Everything we know about the Milky Way has been learned sittin ...
... have (and will) NEVER photograph or observe the Milky Way from outside of it. We are forever bound within our Galaxy and getting an exterior perspective would take many thousands of light-years, traveling at the speed of light of course. Everything we know about the Milky Way has been learned sittin ...
Galaxies - WordPress.com
... wavelength shortens, and the light shifts towards the blue end of the color spectrum. If an object is moving away fom us, its wavelength gets longer, and the light shifts towards the red end of the ...
... wavelength shortens, and the light shifts towards the blue end of the color spectrum. If an object is moving away fom us, its wavelength gets longer, and the light shifts towards the red end of the ...
Curriculum Map - Flagstaff Unified School District
... What is matter? How do we describe matter? How can matter be changed? How does the gain and loss of energy affect matter? 5. What makes up an atom? 6. How do atoms combine to form molecules and compounds? 7. What is the purpose of the periodic table of elements? 8. What is the difference between a r ...
... What is matter? How do we describe matter? How can matter be changed? How does the gain and loss of energy affect matter? 5. What makes up an atom? 6. How do atoms combine to form molecules and compounds? 7. What is the purpose of the periodic table of elements? 8. What is the difference between a r ...
WELCOME TO THE MILKY WAY
... We share with our ancestors the stars and the constellations. The appearance of the most visible stars and the shapes of the constellations have not changed to a great extent during the last 6,000 years. But that’s about it. The seasonal sky maps of this book would have been completely useless in th ...
... We share with our ancestors the stars and the constellations. The appearance of the most visible stars and the shapes of the constellations have not changed to a great extent during the last 6,000 years. But that’s about it. The seasonal sky maps of this book would have been completely useless in th ...
Kepler Telescope Spots Smallest Exoplanet Yet The Night Sky
... Procyon, and above the Moon for Pollux and (higher) Castor. The Moon is 1.3 light-seconds from Earth; Procyon, Pollux, and Castor are 11, 34, and 52 light-years in the background, respectively. Saturday, February 23 · At this time of year, the Big Dipper stands on its handle in the northeast during ...
... Procyon, and above the Moon for Pollux and (higher) Castor. The Moon is 1.3 light-seconds from Earth; Procyon, Pollux, and Castor are 11, 34, and 52 light-years in the background, respectively. Saturday, February 23 · At this time of year, the Big Dipper stands on its handle in the northeast during ...
New Horizons Spacecraft `Stays the Course` for Pluto System
... · As Mercury fades and descends below Venus day by day, how long can you keep it in view? ...
... · As Mercury fades and descends below Venus day by day, how long can you keep it in view? ...
Uncovering Student Ideas in Science
... Georgia Performance Standards for 6th Grade Earth & Space Science S6E1. Students will explore current scientific views of the universe and how those views evolved. a. Relate the Nature of Science to the progression of basic historical scientific models (geocentric, heliocentric) as they describe our ...
... Georgia Performance Standards for 6th Grade Earth & Space Science S6E1. Students will explore current scientific views of the universe and how those views evolved. a. Relate the Nature of Science to the progression of basic historical scientific models (geocentric, heliocentric) as they describe our ...
Exploring Solar Systems Across the Universe
... It is in this kind of close proximity to their parent stars that many extrasolar planets have been discovered. By learning more about the environment around our own star, the Sun, we can learn about the environment around other stars and the environments in which many extrasolar planets reside. In a ...
... It is in this kind of close proximity to their parent stars that many extrasolar planets have been discovered. By learning more about the environment around our own star, the Sun, we can learn about the environment around other stars and the environments in which many extrasolar planets reside. In a ...
Solutions
... 4. During a night, how do the stars move? What angle does their nightly path make with respect to the horizon? How does it depend on latitude? During the course of a night the stars appear to move westward, rising somewhere along the eastern horizon (except for the circumpolar stars that never rise ...
... 4. During a night, how do the stars move? What angle does their nightly path make with respect to the horizon? How does it depend on latitude? During the course of a night the stars appear to move westward, rising somewhere along the eastern horizon (except for the circumpolar stars that never rise ...
Earth Science Multiple-Choice Question Analyses - MTEL
... Correct Response: D. The scientist's conclusion would be undermined if the uncontaminated test wells were found to be drawing water from a different aquifer than the contaminated confined aquifer that supplies the drinking-water well. The test wells that are up-gradient from the drinking water well ...
... Correct Response: D. The scientist's conclusion would be undermined if the uncontaminated test wells were found to be drawing water from a different aquifer than the contaminated confined aquifer that supplies the drinking-water well. The test wells that are up-gradient from the drinking water well ...
A6 - Vicphysics
... Other objects that may exhibit changes through small telescopes or binoculars over successive nights are comets (if any are visible) and the Moon. With the Moon, concentrate on the terminator, the line between day and night. Some of the brighter variable stars may also be worth observing. The Astron ...
... Other objects that may exhibit changes through small telescopes or binoculars over successive nights are comets (if any are visible) and the Moon. With the Moon, concentrate on the terminator, the line between day and night. Some of the brighter variable stars may also be worth observing. The Astron ...
Astronomy Assignment #1
... 4. During a night, how do the stars move? What angle does their nightly path make with respect to the horizon? How does it depend on latitude? During the course of a night the stars appear to move westward, rising somewhere along the eastern horizon (except for the circumpolar stars that never rise ...
... 4. During a night, how do the stars move? What angle does their nightly path make with respect to the horizon? How does it depend on latitude? During the course of a night the stars appear to move westward, rising somewhere along the eastern horizon (except for the circumpolar stars that never rise ...
Star-S_Teacher_Guide - The University of Texas at Dallas
... A common misconception with students is that the stars are on fire, and burn just like fires on the Earth. If your students bring up such misconceptions during the introduction, gently guide them through the difficulties with this idea. Two major difficulties are the source of fuel and of oxygen to ...
... A common misconception with students is that the stars are on fire, and burn just like fires on the Earth. If your students bring up such misconceptions during the introduction, gently guide them through the difficulties with this idea. Two major difficulties are the source of fuel and of oxygen to ...
2016 Annual Report - International Dark
... as it rises and falls in changing arcs tracing out the rhythmic pattern of the seasons. ...
... as it rises and falls in changing arcs tracing out the rhythmic pattern of the seasons. ...
Longevity of moons around habitable planets
... hypothesis, Earth’s initial angular spin velocity would have been from 5 to 8 h rev− 1 and the initial Earth–Moon distance is * 20 000 km corresponding to the orbital angular velocity of 7.8 h rev− 1. The Earth–Moon system may have thus started near a planet–moon synchronized state, but an unstable ...
... hypothesis, Earth’s initial angular spin velocity would have been from 5 to 8 h rev− 1 and the initial Earth–Moon distance is * 20 000 km corresponding to the orbital angular velocity of 7.8 h rev− 1. The Earth–Moon system may have thus started near a planet–moon synchronized state, but an unstable ...
Geocentric model
In astronomy, the geocentric model (also known as geocentrism, or the Ptolemaic system) is a description of the cosmos where Earth is at the orbital center of all celestial bodies. This model served as the predominant cosmological system in many ancient civilizations such as ancient Greece including the noteworthy systems of Aristotle (see Aristotelian physics) and Ptolemy. As such, they believed that the Sun, Moon, stars, and naked eye planets circled Earth.Two commonly made observations supported the idea that Earth was the center of the Universe. The stars, the sun, and planets appear to revolve around Earth each day, making Earth the center of that system. The stars were thought to be on a celestial sphere, with the earth at its center, that rotated each day, using a line through the north and south pole as an axis. The stars closest to the equator appeared to rise and fall the greatest distance, but each star circled back to its rising point each day. The second observation supporting the geocentric model was that the Earth does not seem to move from the perspective of an Earth-bound observer, and that it is solid, stable, and unmoving.Ancient Roman and medieval philosophers usually combined the geocentric model with a spherical Earth. It is not the same as the older flat Earth model implied in some mythology, as was the case with the biblical and postbiblical Latin cosmology. The ancient Jewish Babylonian uranography pictured a flat Earth with a dome-shaped rigid canopy named firmament placed over it. (רקיע- rāqîa').However, the ancient Greeks believed that the motions of the planets were circular and not elliptical, a view that was not challenged in Western culture until the 17th century through the synthesis of theories by Copernicus and Kepler.The astronomical predictions of Ptolemy's geocentric model were used to prepare astrological and astronomical charts for over 1500 years. The geocentric model held sway into the early modern age, but from the late 16th century onward was gradually superseded by the heliocentric model of Copernicus, Galileo and Kepler. There was much resistance to the transition between these two theories. Christian theologians were reluctant to reject a theory that agreed with Bible passages (e.g. ""Sun, stand you still upon Gibeon"", Joshua 10:12 – King James 2000 Bible). Others felt a new, unknown theory could not subvert an accepted consensus for geocentrism.