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... What are the basic Earth motions? What are the apparent celestial motions associated with Earth’s rotation? What are Star Trails? What is the apparent hourly rate of motion of the stars? How do star trails change with direction? How is Polaris different from other stars? What is specia ...
... What are the basic Earth motions? What are the apparent celestial motions associated with Earth’s rotation? What are Star Trails? What is the apparent hourly rate of motion of the stars? How do star trails change with direction? How is Polaris different from other stars? What is specia ...
MS Science - Kawameeh Middle School
... Earth and the Sun (cont.) • A spinning motion is called rotation. • The line on which an object rotates is the rotation axis. • The tilt of Earth’s rotation axis is always in the same direction by the same amount. • During half of Earth’s orbit, the north end of the rotation axis is toward the Sun ...
... Earth and the Sun (cont.) • A spinning motion is called rotation. • The line on which an object rotates is the rotation axis. • The tilt of Earth’s rotation axis is always in the same direction by the same amount. • During half of Earth’s orbit, the north end of the rotation axis is toward the Sun ...
3rd Grade Object in the Sky Assessment
... 3rd Grade Object in the Sky Assessment 10. In the morning, Rafael notices that the Sun appears on one side of the sky. In the evening, he notices that the Sun appears to be on the other side of the sky. However, in class, Rafael learned that the Sun does not actually move across the sky from one si ...
... 3rd Grade Object in the Sky Assessment 10. In the morning, Rafael notices that the Sun appears on one side of the sky. In the evening, he notices that the Sun appears to be on the other side of the sky. However, in class, Rafael learned that the Sun does not actually move across the sky from one si ...
CHAPTER 5,Planetary Orbits
... It was Johannes Kepler who discovered that the orbits of the planets were actually ellipses rather than circles. This discovery was made by analyzing the positional data for the planets made by the Danish astronomer Tycho Brahe, who was a colleague of Kepler. In fact, Kepler formulated three laws of ...
... It was Johannes Kepler who discovered that the orbits of the planets were actually ellipses rather than circles. This discovery was made by analyzing the positional data for the planets made by the Danish astronomer Tycho Brahe, who was a colleague of Kepler. In fact, Kepler formulated three laws of ...
1. What are the four branches of earth? -Geology
... North/South is divided into segments called latitude, which is measured in degrees. Full circle is 360 degrees. The distance between the pole and the equator is ¼ of 360 degrees so it is equivalent to 90 degrees. Above the equator is north and below is south. Each degree of latitude consists of 60 e ...
... North/South is divided into segments called latitude, which is measured in degrees. Full circle is 360 degrees. The distance between the pole and the equator is ¼ of 360 degrees so it is equivalent to 90 degrees. Above the equator is north and below is south. Each degree of latitude consists of 60 e ...
astro 001.101 summer 2002 exam 2
... that stars lie at very great distances. For the nearest star to the Sun, the angle is only ~ 1/1800o. The smallest angular separation the human eye can perceive is about 1/60o; consequently, it’s not hard to understand how the Greeks could have misinterpreted their inability to observe the apparen ...
... that stars lie at very great distances. For the nearest star to the Sun, the angle is only ~ 1/1800o. The smallest angular separation the human eye can perceive is about 1/60o; consequently, it’s not hard to understand how the Greeks could have misinterpreted their inability to observe the apparen ...
Apparent motion
... • Celestial objects – objects outside of the earth’s atmosphere that can be seen in the sky • Zenith – highest point on celestial sphere, directly above observer’s head • Apparent motion – the motion an object appears to have, but which isn’t real ...
... • Celestial objects – objects outside of the earth’s atmosphere that can be seen in the sky • Zenith – highest point on celestial sphere, directly above observer’s head • Apparent motion – the motion an object appears to have, but which isn’t real ...
Lecture 2
... • Why do we see phases of the Moon? – Half the Moon is lit by the Sun; half is in shadow, and its appearance to us is determined by the relative positions of Sun, Moon, and Earth ...
... • Why do we see phases of the Moon? – Half the Moon is lit by the Sun; half is in shadow, and its appearance to us is determined by the relative positions of Sun, Moon, and Earth ...
Exam Name___________________________________
... 10) According to Copernicus, the retrograde motion for Mars must occur A) at quadrature, when Mars lies exactly 90 degrees east or west of the Sun. B) at greatest elongation, when Mars can get up to 47 degrees from the Sun. C) at opposition, when the Earth overtakes Mars and passes between Mars and ...
... 10) According to Copernicus, the retrograde motion for Mars must occur A) at quadrature, when Mars lies exactly 90 degrees east or west of the Sun. B) at greatest elongation, when Mars can get up to 47 degrees from the Sun. C) at opposition, when the Earth overtakes Mars and passes between Mars and ...
Scale Model of the Solar System
... • Other, later, collisions thought to cause some irregularities – Late collisions between planetesimals thought to cause unusual tilts of Venus, Uranus, and possibly Pluto – Formation of the Moon is thought to be the result of a collision between Earth and a very large planetesimal – Mercury may hav ...
... • Other, later, collisions thought to cause some irregularities – Late collisions between planetesimals thought to cause unusual tilts of Venus, Uranus, and possibly Pluto – Formation of the Moon is thought to be the result of a collision between Earth and a very large planetesimal – Mercury may hav ...
What is Astronomy?
... 2. Mount the meterstick upright about 15 ft. from the pointed rock. Measure this distance exactly. This is b. 3. Stand on the other side of the meterstick from the rock and adjust your eyelevel until the pointed rock lines up with the ocean horizon. Note where your line of sight intersects the ruler ...
... 2. Mount the meterstick upright about 15 ft. from the pointed rock. Measure this distance exactly. This is b. 3. Stand on the other side of the meterstick from the rock and adjust your eyelevel until the pointed rock lines up with the ocean horizon. Note where your line of sight intersects the ruler ...
Celestial Objects
... rotation is called precession, and is due to the gravitational effects of the Sun and Moon on the Earth’s equatorial bulge. Precession slowly alters the direction of the polar axis, causing the gradual apparent shift of the NCP and SCP. This causes the “pole” stars – any bright star that happens to ...
... rotation is called precession, and is due to the gravitational effects of the Sun and Moon on the Earth’s equatorial bulge. Precession slowly alters the direction of the polar axis, causing the gradual apparent shift of the NCP and SCP. This causes the “pole” stars – any bright star that happens to ...
Earth and Stars
... exact value of the stadium (which was not the same at Athens, Alexandria or Rome) is fairly hazy, this puts the terrestrial circumference at 40.000 km. The result is remarkable, although several errors were introduced in the calculations: •The distance between Alexandria and Aswan is 729 km, not 800 ...
... exact value of the stadium (which was not the same at Athens, Alexandria or Rome) is fairly hazy, this puts the terrestrial circumference at 40.000 km. The result is remarkable, although several errors were introduced in the calculations: •The distance between Alexandria and Aswan is 729 km, not 800 ...
Excerpts - Solar and Sidereal Time
... Mrs. B. Only twenty minutes; so that the variation of the equinoctial points is very inconsiderable. I have given them a greater extent in the figure in order to render them sensible. In regard to time, I must further add, that the earth's diurnal motion on an inclined axis, together with its annual ...
... Mrs. B. Only twenty minutes; so that the variation of the equinoctial points is very inconsiderable. I have given them a greater extent in the figure in order to render them sensible. In regard to time, I must further add, that the earth's diurnal motion on an inclined axis, together with its annual ...
Tycho Brahe
... • Tycho calculated it was at least 6 lunar distances away from Earth. This distance puts it in the Ptolemaic models region of fixed stars. • This was another blow to the geocentric beliefs. ...
... • Tycho calculated it was at least 6 lunar distances away from Earth. This distance puts it in the Ptolemaic models region of fixed stars. • This was another blow to the geocentric beliefs. ...
DO PHYSICS ONLINE SPACE MOTION OF SATELLITES
... Satellites are placed in one of several different types of orbit depending on the nature of their mission. Two common orbit types are a Low Earth Orbit (LEO) and a Geostationary Orbit (GEO). LEOs occur at a radius of between 200 and 2000 km above the Earth’s surface with periods varying from 60 to 9 ...
... Satellites are placed in one of several different types of orbit depending on the nature of their mission. Two common orbit types are a Low Earth Orbit (LEO) and a Geostationary Orbit (GEO). LEOs occur at a radius of between 200 and 2000 km above the Earth’s surface with periods varying from 60 to 9 ...
The Seasons
... It is the gravitational attraction between the sun and the earth that keeps the earth in its orbit. Remember Newton’s Second Law of Motion, it states that in order to accelerate a mass a force must be applied to it. What can you say about the relationship between the magnitude of this force and the ...
... It is the gravitational attraction between the sun and the earth that keeps the earth in its orbit. Remember Newton’s Second Law of Motion, it states that in order to accelerate a mass a force must be applied to it. What can you say about the relationship between the magnitude of this force and the ...
PLANETARY MOTIONS
... were seven known planets in ancient times: Mercury, Venus, Mars, Jupiter, Saturn, the Sun, and the Moon. All other celestial objects were fixed stars and moved together - their positions with respect to one another did not change. Planetary motions seen against the fixed stars The Shadow Orrery take ...
... were seven known planets in ancient times: Mercury, Venus, Mars, Jupiter, Saturn, the Sun, and the Moon. All other celestial objects were fixed stars and moved together - their positions with respect to one another did not change. Planetary motions seen against the fixed stars The Shadow Orrery take ...
Name________________ Final Ms. Bailey Period ______ October
... day. Points A through E are locations on Earth's surface. Point D is located in New York State. The dashed line represents Earth's axis. What is the latitude of location A? ...
... day. Points A through E are locations on Earth's surface. Point D is located in New York State. The dashed line represents Earth's axis. What is the latitude of location A? ...
Celestial Motions
... • We cannot see stars near the south celestial pole. • All other stars (and Sun, Moon, planets) rise in east and set in west. ...
... • We cannot see stars near the south celestial pole. • All other stars (and Sun, Moon, planets) rise in east and set in west. ...
PHYS103 Hour Exam No. 1 Page: 1 1 Which of the following
... 13 One observation that Aristotle used to justify a spherical model of the Earth was that a. the Earth casts a jagged shadow on the Moon during a lunar eclipse. b. the Earth casts a curved shadow on the Moon during a lunar eclipse. c. total eclipses of the Moon can be seen everywhere on Earth. d. to ...
... 13 One observation that Aristotle used to justify a spherical model of the Earth was that a. the Earth casts a jagged shadow on the Moon during a lunar eclipse. b. the Earth casts a curved shadow on the Moon during a lunar eclipse. c. total eclipses of the Moon can be seen everywhere on Earth. d. to ...
Competing Cosmologies
... Earth- vs. Sun-Centered To the ancients, which of the following would have been an argument in favor of a Sun-centered cosmology? ...
... Earth- vs. Sun-Centered To the ancients, which of the following would have been an argument in favor of a Sun-centered cosmology? ...
Copernican heliocentrism
Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543. It positioned the Sun near the center of the Universe, motionless, with Earth and the other planets rotating around it in circular paths modified by epicycles and at uniform speeds. The Copernican model departed from the Ptolemaic system that prevailed in Western culture for centuries, placing Earth at the center of the Universe, and is often regarded as the launching point to modern astronomy and the Scientific Revolution.Copernicus was aware that the ancient Greek Aristarchus had already proposed a heliocentric theory, and cited him as a proponent of it in a reference that was deleted before publication, but there is no evidence that Copernicus had knowledge of, or access to, the specific details of Aristarchus' theory. Although he had circulated an outline of his own heliocentric theory to colleagues sometime before 1514, he did not decide to publish it until he was urged to do so late in his life by his pupil Rheticus. Copernicus's challenge was to present a practical alternative to the Ptolemaic model by more elegantly and accurately determining the length of a solar year while preserving the metaphysical implications of a mathematically ordered cosmos. Thus his heliocentric model retained several of the Ptolemaic elements causing the inaccuracies, such as the planets' circular orbits, epicycles, and uniform speeds, while at the same time re-introducing such innovations as,Earth is one of several planets revolving around a stationary Sun in a determined orderEarth has three motions: daily rotation, annual revolution, and annual tilting of its axisRetrograde motion of the planets is explained by Earth's motionDistance from Earth to the Sun is small compared to the distance to the stars.↑ 1.0 1.1 ↑