here
... up before they hit us and if they did hit us there would be no erosion and the earth would be full of craters like the moon ...
... up before they hit us and if they did hit us there would be no erosion and the earth would be full of craters like the moon ...
Some facts and concepts to have at your fingertips.
... • Age of solar system ≈ 4.6 billion years • Age of universe ≈ 13.7 billion years • First quarter Moon is 90 degrees east of Sun, so first quarter Moon rises about noon, is highest in the sky at sunset, and sets about midnight. • Full Moon is opposite Sun, so full Moon rises at sunset, is highest in ...
... • Age of solar system ≈ 4.6 billion years • Age of universe ≈ 13.7 billion years • First quarter Moon is 90 degrees east of Sun, so first quarter Moon rises about noon, is highest in the sky at sunset, and sets about midnight. • Full Moon is opposite Sun, so full Moon rises at sunset, is highest in ...
PHYS 1470 3.0 W16/17 Highlights of Astronomy Assignment #1
... Each student must hand in his/her own assignment. While you may confer with someone else on how to approach a problem, your solutions must be your own. Also, students are discouraged from providing answers that are strictly numerical, but rather should include a brief description in words (and even ...
... Each student must hand in his/her own assignment. While you may confer with someone else on how to approach a problem, your solutions must be your own. Also, students are discouraged from providing answers that are strictly numerical, but rather should include a brief description in words (and even ...
Name: Orbits and Escape Velocity – Practice 1. A concrete block of
... 6. A solid uniform sphere has a mass of 1.0 × 104 kg and a radius of 1.0 m. What is the magnitude of the gravitational force due to the sphere on a particle of mass m located at a distance of A. 1.5 m from the center of the sphere. ...
... 6. A solid uniform sphere has a mass of 1.0 × 104 kg and a radius of 1.0 m. What is the magnitude of the gravitational force due to the sphere on a particle of mass m located at a distance of A. 1.5 m from the center of the sphere. ...
3.1 Notes
... •Weather is the condition of the atmosphere in a certain place at a specific time. • The climate of an area is its longterm typical weather pattern. • The climate of an area is determined by many things; the most important is the earth’s position in relation to the sun. 2.6 describe factors that inf ...
... •Weather is the condition of the atmosphere in a certain place at a specific time. • The climate of an area is its longterm typical weather pattern. • The climate of an area is determined by many things; the most important is the earth’s position in relation to the sun. 2.6 describe factors that inf ...
The Solar System
... • the path of an object in space as it travels around another object • planets orbit around the sun in an elliptical (flattened circle or oval) path; proposed by Johannes Kepler Kepler’s 1st Law • due to the gravitational attraction, a planet’s (or other object’s) speed increases as it approaches ...
... • the path of an object in space as it travels around another object • planets orbit around the sun in an elliptical (flattened circle or oval) path; proposed by Johannes Kepler Kepler’s 1st Law • due to the gravitational attraction, a planet’s (or other object’s) speed increases as it approaches ...
Chapter105.ppt
... view that the Earth was the most important place in the Universe and human beings the Universe’s most important creatures. (Also, at the time, most people believe the Earth was flat, not spherical, and that if you sailed on the ocean too far in one direction you would fall off the edge). • For the n ...
... view that the Earth was the most important place in the Universe and human beings the Universe’s most important creatures. (Also, at the time, most people believe the Earth was flat, not spherical, and that if you sailed on the ocean too far in one direction you would fall off the edge). • For the n ...
Astronomy Review fall 2013
... List 2 characteristics that are used to determine whether a planet is a Terrestrial planet or a Jovian planet? a. Jovian planets are large; terrestrial planets are small b. Jovian planets are made of gas; terrestrial planets are made of rock and metals c. Jovian planets have no solid surface; terre ...
... List 2 characteristics that are used to determine whether a planet is a Terrestrial planet or a Jovian planet? a. Jovian planets are large; terrestrial planets are small b. Jovian planets are made of gas; terrestrial planets are made of rock and metals c. Jovian planets have no solid surface; terre ...
History of Astronomy
... c) The geocentric model couldn’t account for day and night. d) The Earth revolved around the Sun. e) The Sun orbited Earth. ...
... c) The geocentric model couldn’t account for day and night. d) The Earth revolved around the Sun. e) The Sun orbited Earth. ...
Chapter 1 Periods of Western Astronomy Prehistoric Astronomy
... of east and sets north of west • In winter months of Northern hemisphere, the Sun rises south of east and sets south of west • The solstices (about June 21 and December 21) are when the Sun rises at the most extreme north and south points • The equinoxes (equal day and night and about March 21 and S ...
... of east and sets north of west • In winter months of Northern hemisphere, the Sun rises south of east and sets south of west • The solstices (about June 21 and December 21) are when the Sun rises at the most extreme north and south points • The equinoxes (equal day and night and about March 21 and S ...
8th Grade Midterm Test Review
... color as the sun, what can the scientist assume about he temperature of the star? • The scientist can assume that the star may have a temperature that is similar to the Sun’s because it is the same color ...
... color as the sun, what can the scientist assume about he temperature of the star? • The scientist can assume that the star may have a temperature that is similar to the Sun’s because it is the same color ...
Tycho: The most accurate pre
... (Retrograde motion of Mars seen when Earth overtakes Mars periodically) ...
... (Retrograde motion of Mars seen when Earth overtakes Mars periodically) ...
01D)EA~1
... • Retrograde motion basically happens because planets “lap” other planets or “pass” them in their orbital race around the sun. ...
... • Retrograde motion basically happens because planets “lap” other planets or “pass” them in their orbital race around the sun. ...
1 Chapter 1 1-1. How long does it take the Earth to orbit the Sun? a
... 1-19. What is the term that describes the changes in the direction in which the Earth’s axis of rotation points? a.) Precession X b.) Perpendicular c.) Equatorial bulge d.) Gravitation 1-20. True or False: Polaris will not always be the pole star. a) True X b) False 1-21. Which term describes the ti ...
... 1-19. What is the term that describes the changes in the direction in which the Earth’s axis of rotation points? a.) Precession X b.) Perpendicular c.) Equatorial bulge d.) Gravitation 1-20. True or False: Polaris will not always be the pole star. a) True X b) False 1-21. Which term describes the ti ...
No Slide Title
... water and dust blocked the sun’s rays and changed the climate below. The plant and animal life were all affected to the point that most plants and animals died. This could happen again. The impact is thought to have been in the Yucatan peninsula off the coast of Mexico. Hollywood has filmed this typ ...
... water and dust blocked the sun’s rays and changed the climate below. The plant and animal life were all affected to the point that most plants and animals died. This could happen again. The impact is thought to have been in the Yucatan peninsula off the coast of Mexico. Hollywood has filmed this typ ...
a planet rotates on its own axis and revolves around
... the force of gravity depends on the product of the masses of the objects divided by the square of the distance between them. Gravity is always working in the universe and it depends on the objects size, mass and location ...
... the force of gravity depends on the product of the masses of the objects divided by the square of the distance between them. Gravity is always working in the universe and it depends on the objects size, mass and location ...
Solar System - U
... The four inner or terrestrial planets have dense, rocky compositions, few or no moons, and no ring systems. They are composed largely of refractory minerals, such as the silicates, which form their crusts and mantles, and metals, such as iron and nickel, which form their cores. Three of the four in ...
... The four inner or terrestrial planets have dense, rocky compositions, few or no moons, and no ring systems. They are composed largely of refractory minerals, such as the silicates, which form their crusts and mantles, and metals, such as iron and nickel, which form their cores. Three of the four in ...
03_LectureOutlines
... • Model was no more accurate than Ptolemaic model in predicting planetary positions, because it still used perfect circles. ...
... • Model was no more accurate than Ptolemaic model in predicting planetary positions, because it still used perfect circles. ...
sample exam 1
... 1. Draw the heliocentric model of the solar system, including only the Sun and Earth, from a viewpoint at the celestial north pole. Use the standard astronomical symbols for those bodies. Indicate with an arrow the direction in which the Earth orbits. 2. On the same drawing above, indicate with an a ...
... 1. Draw the heliocentric model of the solar system, including only the Sun and Earth, from a viewpoint at the celestial north pole. Use the standard astronomical symbols for those bodies. Indicate with an arrow the direction in which the Earth orbits. 2. On the same drawing above, indicate with an a ...
- Lincoln High School
... theories. Scientific theories are accepted when they make testable predictions that can be verified using new observations and experiments. ...
... theories. Scientific theories are accepted when they make testable predictions that can be verified using new observations and experiments. ...
Astronomy Review
... The latitude/longitude coordinate system and our system of time are based on celestial observations. 0° longitude Early Astronomers were able to look to the constellations to determine that the earth was moving at a predictable rate. 0° latitude Moons are seen by reflected light. Our Moon orbits Ear ...
... The latitude/longitude coordinate system and our system of time are based on celestial observations. 0° longitude Early Astronomers were able to look to the constellations to determine that the earth was moving at a predictable rate. 0° latitude Moons are seen by reflected light. Our Moon orbits Ear ...
Astronomy Study Guide
... The latitude/longitude coordinate system and our system of time are based on celestial observations. 0° longitude Early Astronomers were able to look to the constellations to determine that the earth was moving at a predictable rate. 0° latitude Moons are seen by reflected light. Our Moon orbits Ear ...
... The latitude/longitude coordinate system and our system of time are based on celestial observations. 0° longitude Early Astronomers were able to look to the constellations to determine that the earth was moving at a predictable rate. 0° latitude Moons are seen by reflected light. Our Moon orbits Ear ...
CHAPTER 2: Gravitation and the Waltz of the Planets
... theories. Scientific theories are accepted when they make testable predictions that can be verified using new observations and experiments. ...
... theories. Scientific theories are accepted when they make testable predictions that can be verified using new observations and experiments. ...
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.