Science Grade 5 Date: March 21, 2014 ET Topic: Composition a
... orbit - the path one body takes in space as it revolves around another equator - an imaginary line around Earth equally distant from the North and South poles moon - any natural body that revolves around a planet crater - a low, bowl-shaped area on the surface of a planet or moon moon phase - one of ...
... orbit - the path one body takes in space as it revolves around another equator - an imaginary line around Earth equally distant from the North and South poles moon - any natural body that revolves around a planet crater - a low, bowl-shaped area on the surface of a planet or moon moon phase - one of ...
Astro twopages
... While the MFT contains "astrophysics" questions, don't think that you cannot answer them without any classes in the subject! Yes, last year some questions involved stars, but stars were simply a convenient real-world blackbody for Wein's Law and the Stefan Boltzmann Relation -- actually just thermod ...
... While the MFT contains "astrophysics" questions, don't think that you cannot answer them without any classes in the subject! Yes, last year some questions involved stars, but stars were simply a convenient real-world blackbody for Wein's Law and the Stefan Boltzmann Relation -- actually just thermod ...
HE Solar System is made up of the sun and its a family of eight
... I t goes around the s u n in 2 2 j days and the generally agreed upon time of revolution on its axis is 2 3 hours nearly. This planet is surrounded by a very dense atmosphere which completely obscures its surface. , Next to the sun and the moon Venus is the most brilliant object in the heavens. When ...
... I t goes around the s u n in 2 2 j days and the generally agreed upon time of revolution on its axis is 2 3 hours nearly. This planet is surrounded by a very dense atmosphere which completely obscures its surface. , Next to the sun and the moon Venus is the most brilliant object in the heavens. When ...
Some Important Introductory Concepts
... It will help if you associate each new unit with some object--e.g. a “micron” is 0.0001 cm, but you don’t need to know that, only that it is like the size of a microscopic dust grain. Appendix 2 in the textbook goes over some of this; just skim it now and use it for future reference if you become co ...
... It will help if you associate each new unit with some object--e.g. a “micron” is 0.0001 cm, but you don’t need to know that, only that it is like the size of a microscopic dust grain. Appendix 2 in the textbook goes over some of this; just skim it now and use it for future reference if you become co ...
Chapter 6 The Archean Eon of Precambrian Time I. Introduction
... iv. remaining iron and other metals would combine with silicon and oxygen to form the less dense mantle v. still lighter components would separate out of the mantle to form an uppermost crustal layer b. Heat needed for differentiation i. accretionary heat derived from bombardment by particles and me ...
... iv. remaining iron and other metals would combine with silicon and oxygen to form the less dense mantle v. still lighter components would separate out of the mantle to form an uppermost crustal layer b. Heat needed for differentiation i. accretionary heat derived from bombardment by particles and me ...
Observing the Sky
... • A calendar is a system for organizing time. Most calendars organize time within a single unit called a year. A year is the time required for the Earth to orbit the sun once. Within a year are smaller units of time called months. A month is roughly the amount of time required for the moon to orbit ...
... • A calendar is a system for organizing time. Most calendars organize time within a single unit called a year. A year is the time required for the Earth to orbit the sun once. Within a year are smaller units of time called months. A month is roughly the amount of time required for the moon to orbit ...
Meteors, Meteoroids, and Meteorites
... Meteoroids travel around the sun in different orbits and at different speeds. The fastest ones move at about 40 kilometers per second. The Earth travels at about 28 kilometers per second. So when meteoroids meet the Earth's atmosphere head-on, the combined (all together) speed may reach about 70 kil ...
... Meteoroids travel around the sun in different orbits and at different speeds. The fastest ones move at about 40 kilometers per second. The Earth travels at about 28 kilometers per second. So when meteoroids meet the Earth's atmosphere head-on, the combined (all together) speed may reach about 70 kil ...
Celestial Sphere
... Some planets occasionally reverse their motion relative to the stars, moving slowly westward relative to the stars, for a few days ...
... Some planets occasionally reverse their motion relative to the stars, moving slowly westward relative to the stars, for a few days ...
The Scientific Method
... quantities and to then average his results in order to arrive at his final answer. This is standard practice today, but was highly unusual during Tycho's time.) The most direct observational evidence for Earth's orbital motion is the apparent shift of nearby stars after six months, as the Earth move ...
... quantities and to then average his results in order to arrive at his final answer. This is standard practice today, but was highly unusual during Tycho's time.) The most direct observational evidence for Earth's orbital motion is the apparent shift of nearby stars after six months, as the Earth move ...
25 August: Getting Oriented, Astronomical Coordinate Systems
... altitude angle due south, sets in the west • When the Sun sets, it gets dark and we see the stars and planets • The Moon “ “ “ “ “ • The Moon rises at a different time each night and is seen against a different constellation • The constellations in the evening sky are different in different seasons ...
... altitude angle due south, sets in the west • When the Sun sets, it gets dark and we see the stars and planets • The Moon “ “ “ “ “ • The Moon rises at a different time each night and is seen against a different constellation • The constellations in the evening sky are different in different seasons ...
Intro to Astronomy
... (and dust) stretching across the sky. Some think it resembles a river of milk across the sky. ...
... (and dust) stretching across the sky. Some think it resembles a river of milk across the sky. ...
CH 12
... How does one measure the radius of the earth? This was already done by Cavendish's time by as librarian in Alexandria called Eratosthenes (around 200 BC). Eratosthenes knew that ot a particular day every year sunlight reached the bottom of a very deep well in Syene (modern Aswan). He also knew the d ...
... How does one measure the radius of the earth? This was already done by Cavendish's time by as librarian in Alexandria called Eratosthenes (around 200 BC). Eratosthenes knew that ot a particular day every year sunlight reached the bottom of a very deep well in Syene (modern Aswan). He also knew the d ...
Chapter 13
... 3. A satellite is orbiting 350 km above the surface of the Earth. (a) What is the acceleration due to gravity the satellite experiences? (b) What is the period of the satellite? Ans. (a) 8.83 m/s 2 (b) 5480 s 4. Two identical stars are in orbit about their center of mass. The orbital period is 141 d ...
... 3. A satellite is orbiting 350 km above the surface of the Earth. (a) What is the acceleration due to gravity the satellite experiences? (b) What is the period of the satellite? Ans. (a) 8.83 m/s 2 (b) 5480 s 4. Two identical stars are in orbit about their center of mass. The orbital period is 141 d ...
Universal Gravitation
... move off in a straight line and leave its orbit • The moon must be falling around the earth • He hypothesized that the moon was simply a projectile circling the earth under the attraction of gravity falling toward the earth but with a great enough tangential velocity to avoid hitting the earth ...
... move off in a straight line and leave its orbit • The moon must be falling around the earth • He hypothesized that the moon was simply a projectile circling the earth under the attraction of gravity falling toward the earth but with a great enough tangential velocity to avoid hitting the earth ...
Planets and Stars Key Vocabulary: Comparing and Contrasting
... Why are some constellations observed during some seasons, but not during other seasons? Changes in the locations of constellations during the night are due to the rotation of Earth on its axis. - Because stars are so far away from us, changes in their positions are barely noticeable; thus, constella ...
... Why are some constellations observed during some seasons, but not during other seasons? Changes in the locations of constellations during the night are due to the rotation of Earth on its axis. - Because stars are so far away from us, changes in their positions are barely noticeable; thus, constella ...
Class 26: EXAM 2
... 13) Which of the following is not a characteristic of the inner planets? A) They all have substantial atmospheres. B) They are relatively smaller than the outer planets. C) Their orbits are relatively closely spaced. D) They all have solid, rocky surfaces. E) They have very few, if any, satellites. ...
... 13) Which of the following is not a characteristic of the inner planets? A) They all have substantial atmospheres. B) They are relatively smaller than the outer planets. C) Their orbits are relatively closely spaced. D) They all have solid, rocky surfaces. E) They have very few, if any, satellites. ...
Celestial Motions - Stony Brook Astronomy
... • Stars near the north celestial pole are circumpolar and never set. • We cannot see stars near the south celestial pole. • All other stars (and Sun, Moon, planets) rise in east and set in west. This star is up some of the time and down ...
... • Stars near the north celestial pole are circumpolar and never set. • We cannot see stars near the south celestial pole. • All other stars (and Sun, Moon, planets) rise in east and set in west. This star is up some of the time and down ...
ASTR 105 Intro Astronomy: The Solar System
... Our view from Stony Brook • Stars near the north celestial pole are circumpolar and never set. • We cannot see stars near the south celestial pole. • All other stars (and Sun, Moon, planets) rise in east and set in west. This star is up some of the time and down ...
... Our view from Stony Brook • Stars near the north celestial pole are circumpolar and never set. • We cannot see stars near the south celestial pole. • All other stars (and Sun, Moon, planets) rise in east and set in west. This star is up some of the time and down ...
Homework #5 Chapter 3: Solar System Due
... the temperatures were sufficiently low for ices of water, ammonia, and methane to form. This provided much more material for the early accretion that occurred, and it proceeded rapidly. The planetesimals that formed could then also attract hydrogen and helium, and the jovian planets grew to a large ...
... the temperatures were sufficiently low for ices of water, ammonia, and methane to form. This provided much more material for the early accretion that occurred, and it proceeded rapidly. The planetesimals that formed could then also attract hydrogen and helium, and the jovian planets grew to a large ...
Teacher: Mrs. Zimmerman Astronomy Part 2 Practice Test 1. In the
... a spiral-shaped formation composed of billions of stars ...
... a spiral-shaped formation composed of billions of stars ...
Introduction to the Universe
... of the disc-shaped Milky Way galaxy, which spans 100,000 light years. Students know galaxies are made of billions of stars and comprise most of the visible mass of the universe. ...
... of the disc-shaped Milky Way galaxy, which spans 100,000 light years. Students know galaxies are made of billions of stars and comprise most of the visible mass of the universe. ...
Astronomy - Educator Pages
... The solar system also has several dwarf planets, such as Pluto, Eris, and Ceres. -these have enough mass and gravity to be round, but not enough to significantly affect the objects around them like planets do. ...
... The solar system also has several dwarf planets, such as Pluto, Eris, and Ceres. -these have enough mass and gravity to be round, but not enough to significantly affect the objects around them like planets do. ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... astronomers and computational astrophysicists to reexamine long-held models of how planets form Constrained by the data “With many observations, theorists have less freedom to speculate how planets form,” explains Brad M. S. Hansen, associate professor of physics and astronomy at the University of C ...
... astronomers and computational astrophysicists to reexamine long-held models of how planets form Constrained by the data “With many observations, theorists have less freedom to speculate how planets form,” explains Brad M. S. Hansen, associate professor of physics and astronomy at the University of C ...
A_Changing_Planet - Illinois State University
... temperature of 10 Kelvin (-263 degrees Celsius). The cloud collapses under its own weight and very soon stars start to form. Surrounding some of these stars are swirling discs of gas which may go on later to form planetary systems like our own Solar System. The calculation took approximately 100,000 ...
... temperature of 10 Kelvin (-263 degrees Celsius). The cloud collapses under its own weight and very soon stars start to form. Surrounding some of these stars are swirling discs of gas which may go on later to form planetary systems like our own Solar System. The calculation took approximately 100,000 ...
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.