LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... 11. Describe the Equatorial coordinate system to fix the position of body in the celestial sphere. 12. Find the condition that twilight may last through out night. 13. Derive cassini’s formula for refraction, indicating the assumptions made. 14. If the moon’s horizontal parallax is 57’ and her angul ...
... 11. Describe the Equatorial coordinate system to fix the position of body in the celestial sphere. 12. Find the condition that twilight may last through out night. 13. Derive cassini’s formula for refraction, indicating the assumptions made. 14. If the moon’s horizontal parallax is 57’ and her angul ...
Earth in Space and Beyond - Westmoreland Central School
... Earth’s Rotation • Motions of the sun – Due to Earth’s rotation, the Sun appears to move E to W at a rate of 15 degrees per hour. – Because Earth’s axis is tilted at 23.5 degrees, the latitude at which direct rays strike Earth’s surface changes in a cyclic pattern. – Seasonal changes are caused b ...
... Earth’s Rotation • Motions of the sun – Due to Earth’s rotation, the Sun appears to move E to W at a rate of 15 degrees per hour. – Because Earth’s axis is tilted at 23.5 degrees, the latitude at which direct rays strike Earth’s surface changes in a cyclic pattern. – Seasonal changes are caused b ...
Chapter 8, Lesson 1, pdf
... If it is 8:00P.M. Mountain Standard Time, what time is it in Honolulu, Hawaii? If it is 8:00P.M. Mountain Standard Time, then it is 5:00P.M. in Honolulu, Hawaii. ...
... If it is 8:00P.M. Mountain Standard Time, what time is it in Honolulu, Hawaii? If it is 8:00P.M. Mountain Standard Time, then it is 5:00P.M. in Honolulu, Hawaii. ...
Lesson 1, The Earth
... planetary images taken from Earth and those taken from space? The sharpness and detail of the images would increase, from ground-based to satellite to probe, because there is no air in space. ...
... planetary images taken from Earth and those taken from space? The sharpness and detail of the images would increase, from ground-based to satellite to probe, because there is no air in space. ...
Discovering The Universe for Yourself
... • As the Moon moves through the sky, both its appearance and the time at which it rises and sets change with the cycle of Lunar Phases. ...
... • As the Moon moves through the sky, both its appearance and the time at which it rises and sets change with the cycle of Lunar Phases. ...
PPT - FLYPARSONS.org
... The “harvest moon” involves the rising of the full moon in late September and early October. Due to the angular tilt of the moon’s orbital plane with that of the Earth, the bright moon appears to rise at about the same time in the early evening when the moon is full at the time of the “autumnal equi ...
... The “harvest moon” involves the rising of the full moon in late September and early October. Due to the angular tilt of the moon’s orbital plane with that of the Earth, the bright moon appears to rise at about the same time in the early evening when the moon is full at the time of the “autumnal equi ...
Astronomy
... e. The tides are the daily, periodic rise and fall of water level caused by the gravitational pull of the sun and moon. f. Water occurs on Earth as a solid (ice), a liquid, or a gas (water vapor) due to its position in the solar system. g. The sun consists largely of hydrogen gas. Its energy comes f ...
... e. The tides are the daily, periodic rise and fall of water level caused by the gravitational pull of the sun and moon. f. Water occurs on Earth as a solid (ice), a liquid, or a gas (water vapor) due to its position in the solar system. g. The sun consists largely of hydrogen gas. Its energy comes f ...
THE SOLAR SYSTEM An Overview Astronomy is the study of the
... The solar system is shaped like a disk with a very small bump in the center representing the sun. The planets all orbit the sun on a relatively thin plane with the exception of Pluto. Pluto's orbit takes it well above and below the plane of the solar system. Time is expressed as either sidereal or ...
... The solar system is shaped like a disk with a very small bump in the center representing the sun. The planets all orbit the sun on a relatively thin plane with the exception of Pluto. Pluto's orbit takes it well above and below the plane of the solar system. Time is expressed as either sidereal or ...
A Solar System - Cloudfront.net
... The Milky Way: Our galaxy containing up to 400 billion solar systems. Earth is located on one spiral arm. ...
... The Milky Way: Our galaxy containing up to 400 billion solar systems. Earth is located on one spiral arm. ...
Which of the following statements is TRUE
... Star X has a surface temperature that is 3 times higher than that of the Sun. Both stars have exactly the same radius. Which of the following statements is TRUE? A. The luminosity of the Sun is 81 times that of the star X B. The typical photon emitted by star X has a lower energy than the typical ph ...
... Star X has a surface temperature that is 3 times higher than that of the Sun. Both stars have exactly the same radius. Which of the following statements is TRUE? A. The luminosity of the Sun is 81 times that of the star X B. The typical photon emitted by star X has a lower energy than the typical ph ...
The Sky and its Motions
... The Motion of the Planets (II) • All outer planets (Mars, Jupiter, Saturn, Uranus, Neptune and Pluto) generally appear to move eastward along the Ecliptic. • The inner planets Mercury and Venus can never be seen at large angular distance from the sun and appear only as morning or evening stars. ...
... The Motion of the Planets (II) • All outer planets (Mars, Jupiter, Saturn, Uranus, Neptune and Pluto) generally appear to move eastward along the Ecliptic. • The inner planets Mercury and Venus can never be seen at large angular distance from the sun and appear only as morning or evening stars. ...
Final Review - PCHS SCIENCE
... inner planets move faster in their orbits than the outer planets do. – As Earth bypasses a slower-moving outer planet, it appears that the outer planet temporarily moves backward in the sky. ...
... inner planets move faster in their orbits than the outer planets do. – As Earth bypasses a slower-moving outer planet, it appears that the outer planet temporarily moves backward in the sky. ...
2. Answer Key Practice Test, Topic 3
... 39. Scientists infer that most of Earth’s earliest atmosphere was produced by A) B) C) D) ...
... 39. Scientists infer that most of Earth’s earliest atmosphere was produced by A) B) C) D) ...
The Earth
... Bright stars in the night sky are about 1000 000 (1 million) times as far away as the Sun. The near galaxies are about 100 000 times as far away as the bright stars. ...
... Bright stars in the night sky are about 1000 000 (1 million) times as far away as the Sun. The near galaxies are about 100 000 times as far away as the bright stars. ...
Physics@Brock - Brock University
... (b) the heliocentric model. 38. At the time of Copernicus, the fact that parallax shift of the brighter stars could NOT be seen was considered evidence for which model? (a) The geocentric model. (b) The heliocentric model. 39. According to Kepler’s second law, a planet moves fastest when it is (a) c ...
... (b) the heliocentric model. 38. At the time of Copernicus, the fact that parallax shift of the brighter stars could NOT be seen was considered evidence for which model? (a) The geocentric model. (b) The heliocentric model. 39. According to Kepler’s second law, a planet moves fastest when it is (a) c ...
The solar system
... objects in space that orbit (go around) it. The Sun is orbited by planets, moons, asteroids, comets and other things. ...
... objects in space that orbit (go around) it. The Sun is orbited by planets, moons, asteroids, comets and other things. ...
Planet Powerpoint
... These planets are called the gas giants Jupiter, Saturn, Uranus, and Neptune are much larger than earth and do NOT have solid surfaces Strong gravity keeps gases from escaping so they have deep atmospheres May have a center or core but hard to explore because of the great pressure of the atmos ...
... These planets are called the gas giants Jupiter, Saturn, Uranus, and Neptune are much larger than earth and do NOT have solid surfaces Strong gravity keeps gases from escaping so they have deep atmospheres May have a center or core but hard to explore because of the great pressure of the atmos ...
ph512-10-lec5
... corrections to the positions due to distortions in the optics, atmosphere refraction, and aberration caused by the Earth’s motion. Astronomers use astrometric techniques for the tracking of nearEarth objects. It has been also been used to detect extrasolar planets by measuring the displacement they ...
... corrections to the positions due to distortions in the optics, atmosphere refraction, and aberration caused by the Earth’s motion. Astronomers use astrometric techniques for the tracking of nearEarth objects. It has been also been used to detect extrasolar planets by measuring the displacement they ...
Study Guide for 1ST Astronomy Exam
... Draw and label the celestial sphere for an observer at any latitude, Draw the apparent motion of stars as seen by any observer looking North, East, South or West, Define a constellation and distinguish it from an asterism, Use celestial coordinates of Right Ascension and Declination appropri ...
... Draw and label the celestial sphere for an observer at any latitude, Draw the apparent motion of stars as seen by any observer looking North, East, South or West, Define a constellation and distinguish it from an asterism, Use celestial coordinates of Right Ascension and Declination appropri ...
ρ ρ ρ ρ - Bryn Mawr College
... what is the density of the core? How does this compare with the Earth’s core density? This is a variation on the previous question and the same formula can be assumed. Problem 5. Moment of inertia factors I/MR2 (and other information) for the various planets can be found at (http://nssdc.gsfc.nasa. ...
... what is the density of the core? How does this compare with the Earth’s core density? This is a variation on the previous question and the same formula can be assumed. Problem 5. Moment of inertia factors I/MR2 (and other information) for the various planets can be found at (http://nssdc.gsfc.nasa. ...
Astrobiology News for July 2013: What Makes a Planet Habitable
... common in the HZ’s of M-‐dwarfs. M-‐dwarfs are stars that are much cooler than the Sun, have longer lifetimes, and are more than ten times as ubiquitous. The contrast between the size and brightnes ...
... common in the HZ’s of M-‐dwarfs. M-‐dwarfs are stars that are much cooler than the Sun, have longer lifetimes, and are more than ten times as ubiquitous. The contrast between the size and brightnes ...
PowerPoint Presentation - msharnack
... A. The Moon orbits the Earth. B. The Earth orbits the Sun. C. The Sun orbits the Earth. D. The position of Earth compared to the Sun makes night and day. ...
... A. The Moon orbits the Earth. B. The Earth orbits the Sun. C. The Sun orbits the Earth. D. The position of Earth compared to the Sun makes night and day. ...
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.