UNIT 4 STUDY GUIDE Objectives
... What are the two ways that the Earth moves through space? Describe each. Why does the Earth have seasons? Are the seasons the same all over the Earth? Why or why not? What is a solstice? How many are there? When are they? What is an equinox? How many are there? When are they? The force of gravity de ...
... What are the two ways that the Earth moves through space? Describe each. Why does the Earth have seasons? Are the seasons the same all over the Earth? Why or why not? What is a solstice? How many are there? When are they? What is an equinox? How many are there? When are they? The force of gravity de ...
Kepler`s Laws
... • ~140 BC: Ptolemy perfects the geocentric model of the solar system – Uses epicycles to explain retrograde motion. – Note the displacement of Earth from the center o f the circle. – Each epicycle has a different rate ...
... • ~140 BC: Ptolemy perfects the geocentric model of the solar system – Uses epicycles to explain retrograde motion. – Note the displacement of Earth from the center o f the circle. – Each epicycle has a different rate ...
Physics@Brock - Brock University
... Some histories of astronomy unfairly treat the ancients as if they were backward compared to modern thinkers. In fact ancient astronomers were quite ingenious, and made amazing advances in our understanding of the heavens with careful observations and clever reasoning. Their advances in understandin ...
... Some histories of astronomy unfairly treat the ancients as if they were backward compared to modern thinkers. In fact ancient astronomers were quite ingenious, and made amazing advances in our understanding of the heavens with careful observations and clever reasoning. Their advances in understandin ...
Activity 3: Tilted Earth
... ROTATE on its axis: ___________________________ REVOLVE around the Sun: _____________________________ 5. If the Northern Hemisphere (Hershey, PA) is tilting towards the Sun what season would we be in? _______________________ What season would Southern Hemisphere locations be in? __________________ 6 ...
... ROTATE on its axis: ___________________________ REVOLVE around the Sun: _____________________________ 5. If the Northern Hemisphere (Hershey, PA) is tilting towards the Sun what season would we be in? _______________________ What season would Southern Hemisphere locations be in? __________________ 6 ...
Astronomy Quiz 2
... a. stars are sitting still. c. stars are moving away from one another. b. stars are moving toward one another. d. stars are all near the end of their life. ...
... a. stars are sitting still. c. stars are moving away from one another. b. stars are moving toward one another. d. stars are all near the end of their life. ...
Sun Moon and Stars Study Guide
... summer months? Would we have a greater amount of daylight in the summer months compared to the winter months? ...
... summer months? Would we have a greater amount of daylight in the summer months compared to the winter months? ...
Jan. 14 – Jan. 21
... Mystic (music of spheres/nested geometric shapes) Kepler’s Laws 1. elliptical orbits with sun at one focus 2. Sweep out equal areas in equal time 3. period (years) squared is equal to semimajor axis (A.U.) cubed Coined the word Satellite ...
... Mystic (music of spheres/nested geometric shapes) Kepler’s Laws 1. elliptical orbits with sun at one focus 2. Sweep out equal areas in equal time 3. period (years) squared is equal to semimajor axis (A.U.) cubed Coined the word Satellite ...
GEOCENTRIC AND HELIOCENTRIC MODELS
... the light-year (l.y.). Since light travels about 9.5 trillion km per year, this distance is considered one light year. Astronomers have developed another useful unit for smaller distances in space. In the solar system, for instance, the standard unit of measure is the astronomical unit (A.U.), which ...
... the light-year (l.y.). Since light travels about 9.5 trillion km per year, this distance is considered one light year. Astronomers have developed another useful unit for smaller distances in space. In the solar system, for instance, the standard unit of measure is the astronomical unit (A.U.), which ...
Astronomy HOMEWORK Chapter 5 - 9th Edition 2. Pluto is most
... snow line, these could remain frozen solid, allowing them to survive. This marks the difference between rock-and-metal objects (terrestrial planets and asteroids) and objects which have in addition volatile substances (giant planets and comet nuclei). 17. What if Earth had a highly elliptical orbit ...
... snow line, these could remain frozen solid, allowing them to survive. This marks the difference between rock-and-metal objects (terrestrial planets and asteroids) and objects which have in addition volatile substances (giant planets and comet nuclei). 17. What if Earth had a highly elliptical orbit ...
Slide 1
... Kepler’s 2nd Law： As a planet approaches the Sun, it moves faster. A planet moves fastest when it reaches its closest point: perihelion. As a planet moves away from the Sun, it slows down. It moves most slowly when it ...
... Kepler’s 2nd Law： As a planet approaches the Sun, it moves faster. A planet moves fastest when it reaches its closest point: perihelion. As a planet moves away from the Sun, it slows down. It moves most slowly when it ...
Astronomy Study Guide Review
... What is an equinox? When do they occur? Equinox- latin for “equal nights” Vernal Equinox- Spring- March 20th Autumnal Equinox- Fall- Sept. 22nd Center of Sun is in the same plane as the Earth’s equator. ...
... What is an equinox? When do they occur? Equinox- latin for “equal nights” Vernal Equinox- Spring- March 20th Autumnal Equinox- Fall- Sept. 22nd Center of Sun is in the same plane as the Earth’s equator. ...
Historical View
... • However, the work by Aristarchos remained forgotten for more than a millennium, until the Copernican revolution at the end of the 15th century. The view of the universe thus changed dramatically during the 16th century. • In 1543, De revolutionibus (on the revolutions of heavenly spheres, 코페 르니쿠스 ...
... • However, the work by Aristarchos remained forgotten for more than a millennium, until the Copernican revolution at the end of the 15th century. The view of the universe thus changed dramatically during the 16th century. • In 1543, De revolutionibus (on the revolutions of heavenly spheres, 코페 르니쿠스 ...
3.2dl Apparent motion of stars
... The rotation of the Earth on its axis in an anticlockwise direction is the reason the stars track across the sky. As the axis passes close to Polaris, the Pole Star, this appears to stay in one place and the other stars move around the Pole Star. During the night, a constellation like Leo will rise ...
... The rotation of the Earth on its axis in an anticlockwise direction is the reason the stars track across the sky. As the axis passes close to Polaris, the Pole Star, this appears to stay in one place and the other stars move around the Pole Star. During the night, a constellation like Leo will rise ...
class 4, F10 (ch. 2c and 3)
... • Science progresses by creating and testing models of nature that explain observations as simply as possible: Occam’s Razor • A scientific model must make testable predictions that could force us to revise or abandon the model. • Scientific Theory: a model which survives repeated ...
... • Science progresses by creating and testing models of nature that explain observations as simply as possible: Occam’s Razor • A scientific model must make testable predictions that could force us to revise or abandon the model. • Scientific Theory: a model which survives repeated ...
Astronomy 104: Stellar Astronomy
... We're stuck, since no test can distinguish between the two models/theories!!! ...
... We're stuck, since no test can distinguish between the two models/theories!!! ...
handout
... C. Looking east, you see stars rising and moving to the upper _________________ (south) D. Looking south, you see stars moving to the __________________ (west) V. The Sun and its Motions A. ...
... C. Looking east, you see stars rising and moving to the upper _________________ (south) D. Looking south, you see stars moving to the __________________ (west) V. The Sun and its Motions A. ...
Space Vocabulary - Primary Grades Class Page
... A small, frozen mass of dust and gas revolving around the sun. ...
... A small, frozen mass of dust and gas revolving around the sun. ...
Review Handout - Sturgeon Moodle
... most other bodies in space are seen by reflected light. I can describe the location and movement of i stars as they move through the night sky. I can recognize that the movement of objects in the night sky is regular and predictable. I can understand that the Sun should never be viewed directly. I c ...
... most other bodies in space are seen by reflected light. I can describe the location and movement of i stars as they move through the night sky. I can recognize that the movement of objects in the night sky is regular and predictable. I can understand that the Sun should never be viewed directly. I c ...
File
... Juan likes to look at the sky at night. He noticed that the moon seems to change its shape from day to day, but that the shapes always happen in the same order. Which of the following causes the phases of the moon? A. Over the course of a month, different parts of the moon’s reflected sunlight are ...
... Juan likes to look at the sky at night. He noticed that the moon seems to change its shape from day to day, but that the shapes always happen in the same order. Which of the following causes the phases of the moon? A. Over the course of a month, different parts of the moon’s reflected sunlight are ...
Vocabulary Terms
... Moon Phases: Caused by the angle from which an observer on earth can see the moon illuminated by the sun as it orbits our planet. As the moon makes its way around the earth a person can look up in the sky and see various fractions of its surface reflecting sunlight. Orbit: The curved path in which a ...
... Moon Phases: Caused by the angle from which an observer on earth can see the moon illuminated by the sun as it orbits our planet. As the moon makes its way around the earth a person can look up in the sky and see various fractions of its surface reflecting sunlight. Orbit: The curved path in which a ...
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.