Introduction Worksheet 1
... Astronomical observations indicate that the sun is tracing a circular orbit around the center of our galaxy. The radius of orbit is 2.7 x 1020 m with period T = 200 million years. a) Calculate the total mass of the central stars. b) Assume all of these stars have the same mass as our sun. How many d ...
... Astronomical observations indicate that the sun is tracing a circular orbit around the center of our galaxy. The radius of orbit is 2.7 x 1020 m with period T = 200 million years. a) Calculate the total mass of the central stars. b) Assume all of these stars have the same mass as our sun. How many d ...
Galileo and the physics of motion
... motion and force of gravity • gravity causes elliptical orbits where planet moves faster when closer to the Sun as force of gravity is larger there • Third Law actually D3 = (Mass(sun) and Mass(earth) ) x P2 D=distance from Sun and P=period • As mass Sun much larger can mostly ignore mass planet ...
... motion and force of gravity • gravity causes elliptical orbits where planet moves faster when closer to the Sun as force of gravity is larger there • Third Law actually D3 = (Mass(sun) and Mass(earth) ) x P2 D=distance from Sun and P=period • As mass Sun much larger can mostly ignore mass planet ...
Unit A, “Processes of Living Things”
... Bright spots on the photosphere are called _____granules__________. Define Sunspots – dark spots on the sun Define Solar Flares – brief burst of energy from the photosphere Define Solar Wind – a fast-moving stream of particles thrown into space ...
... Bright spots on the photosphere are called _____granules__________. Define Sunspots – dark spots on the sun Define Solar Flares – brief burst of energy from the photosphere Define Solar Wind – a fast-moving stream of particles thrown into space ...
General Astronomy - Stockton University
... Polaris. As the evening passes, the stars appear to rotate clockwise about Polaris. • For a given latitude of an observer, some stars never set - these are known as circumpolar stars • If you were at the North Pole, Polaris would be nearly on your zenith and the motion of the stars would be parallel ...
... Polaris. As the evening passes, the stars appear to rotate clockwise about Polaris. • For a given latitude of an observer, some stars never set - these are known as circumpolar stars • If you were at the North Pole, Polaris would be nearly on your zenith and the motion of the stars would be parallel ...
Space Science - Madison County Schools
... The moon seems to shine because it reflects the sunlight. The gravitational pull of Earth on the Moon causes the Moon to move in an orbit around the Earth. The changing relative positions of the Moon, Earth and Sun cause the phases of the Moon, eclipse and tides. phases – the different forms the Moo ...
... The moon seems to shine because it reflects the sunlight. The gravitational pull of Earth on the Moon causes the Moon to move in an orbit around the Earth. The changing relative positions of the Moon, Earth and Sun cause the phases of the Moon, eclipse and tides. phases – the different forms the Moo ...
The Resounding Universe
... 322 BC) explains why mortals cannot hear these sounds. In fact, a sound or a noise can be perceived only when in contrast with its opposite, namely the absence of the sound itself. However, the sound of the planets is present since our birth and this explains why we cannot recognise it, not having t ...
... 322 BC) explains why mortals cannot hear these sounds. In fact, a sound or a noise can be perceived only when in contrast with its opposite, namely the absence of the sound itself. However, the sound of the planets is present since our birth and this explains why we cannot recognise it, not having t ...
Chapter 15 Test Study Sheet
... a. Students know galaxies are clusters of billions of stars and may have different shapes. Know how scientists can detect the presence of a planet around a distant star. Know that there are three basic galaxy shapes. Know that there are billions of galaxies with billions of stars. Know that ...
... a. Students know galaxies are clusters of billions of stars and may have different shapes. Know how scientists can detect the presence of a planet around a distant star. Know that there are three basic galaxy shapes. Know that there are billions of galaxies with billions of stars. Know that ...
Night/Day and Earth Years
... Justin: It’s because the winter clouds block the heat from the sun. Vincent: It’s because the sun gives off more heat in the summer than in the winter. Curi: It’s because the Earth’s tilt changes the angle of sunlight hitting the Earth. Athziri: It’s because Earth orbits closer to the sun in ...
... Justin: It’s because the winter clouds block the heat from the sun. Vincent: It’s because the sun gives off more heat in the summer than in the winter. Curi: It’s because the Earth’s tilt changes the angle of sunlight hitting the Earth. Athziri: It’s because Earth orbits closer to the sun in ...
Gravity and Motion
... Galileo became convinced that Copernicus was correct by observations of the Sun, Venus, and the moons of Jupiter using the newly-invented telescope. Perhaps Galileo was motivated to understand inertia by his desire to understand and defend Copernicus’ ideas. ...
... Galileo became convinced that Copernicus was correct by observations of the Sun, Venus, and the moons of Jupiter using the newly-invented telescope. Perhaps Galileo was motivated to understand inertia by his desire to understand and defend Copernicus’ ideas. ...
For Chapter 16
... • Mercury has the shortest period of revolution (88 days), and is the fastest moving • Mercury was named by the early Greeks after the swift messenger of the gods • Temperatures on Mercury range from about 473oC on the side facing the Sun to about 173oC on the dark side • Due to its small size and c ...
... • Mercury has the shortest period of revolution (88 days), and is the fastest moving • Mercury was named by the early Greeks after the swift messenger of the gods • Temperatures on Mercury range from about 473oC on the side facing the Sun to about 173oC on the dark side • Due to its small size and c ...
Solar System Teacher Notes
... journey to examine the question, ‘When is a planet not a planet?’ This question is posed by Lucy who, along with her scientist mother Lillian, is on board a research craft heading to the outer limits of the Solar System. This trip (taken around the time of Lucy’s birthday) is to gain data to silence ...
... journey to examine the question, ‘When is a planet not a planet?’ This question is posed by Lucy who, along with her scientist mother Lillian, is on board a research craft heading to the outer limits of the Solar System. This trip (taken around the time of Lucy’s birthday) is to gain data to silence ...
PISGAH Text by Dr. Bob Hayward ASTRONOMICAL Astronomer
... way and is high in the south at sunset. Lying just under the hind legs of the celestial king of the beasts, Leo the lion, Jupiter, the king of the planets, is the brightest object in the sky. It will lose that distinction this week, however, as a waxing crescent makes its appearance. By Friday night ...
... way and is high in the south at sunset. Lying just under the hind legs of the celestial king of the beasts, Leo the lion, Jupiter, the king of the planets, is the brightest object in the sky. It will lose that distinction this week, however, as a waxing crescent makes its appearance. By Friday night ...
The Earth, Sun, Moon and Stars Unit (Planets too
... celestial objects give off radiation other than visible light and must be studied in other energy ranges. B. Objective: The students will learn about some of the more popular celestial objects in the sky and be able to recognize them on overheads. 1. Demonstrate using the Hertzsprung-Russell Diagram ...
... celestial objects give off radiation other than visible light and must be studied in other energy ranges. B. Objective: The students will learn about some of the more popular celestial objects in the sky and be able to recognize them on overheads. 1. Demonstrate using the Hertzsprung-Russell Diagram ...
Planet formation
... The Nice model suggests that the outer Solar System was restructured about 0.5Gyr after the formation of the Solar System (ie. much later than the Grand Tack model). Initially the outer Solar System was Jupiter-Saturn-Neptune-Uranus (and maybe another ice giant). The Kuiper Belt was more massive and ...
... The Nice model suggests that the outer Solar System was restructured about 0.5Gyr after the formation of the Solar System (ie. much later than the Grand Tack model). Initially the outer Solar System was Jupiter-Saturn-Neptune-Uranus (and maybe another ice giant). The Kuiper Belt was more massive and ...
Mon Nov 18, 2013 THE MOON`S TIDAL LOCK The old gibbous
... moon has both day and night. But the moon spins more slowly; a lunar day lasts two weeks, followed by two weeks of lunar night. As the moon orbits the earth, we can’t always see the entire illuminated part. The moon’s period of rotation matches its period of revolution, so it rotates once for every ...
... moon has both day and night. But the moon spins more slowly; a lunar day lasts two weeks, followed by two weeks of lunar night. As the moon orbits the earth, we can’t always see the entire illuminated part. The moon’s period of rotation matches its period of revolution, so it rotates once for every ...
Earth Science Notes - Bridgman Public Schools
... system, ejecting large volumes of heated material from the outer layers of both objects. A disk of orbiting material was formed, and this matter eventually stuck together to form the Moon in orbit around the Earth. –This theory can explain why the Moon is made mostly of rock and how the rock was exc ...
... system, ejecting large volumes of heated material from the outer layers of both objects. A disk of orbiting material was formed, and this matter eventually stuck together to form the Moon in orbit around the Earth. –This theory can explain why the Moon is made mostly of rock and how the rock was exc ...
Revolve / Orbit
... Earth rotates on an axis. This axis is an imaginary line that passes through Earth’s center from the North Pole to the South Pole. It takes Earth 24 hours (1day) to rotate on its axis. This causes day and night. At any time, half of Earth faces the sun, and half faces away from the sun. The half fac ...
... Earth rotates on an axis. This axis is an imaginary line that passes through Earth’s center from the North Pole to the South Pole. It takes Earth 24 hours (1day) to rotate on its axis. This causes day and night. At any time, half of Earth faces the sun, and half faces away from the sun. The half fac ...
ISP205L Visions of the Universe Laboratory
... In Planetarium except as noted. Introduction. The Celestial Sphere. Directions. Star maps. Star motions during the night. Martin Luther King Day. No lab session, but there is still homework. Seasonal motions. Path of the Sun (Analemma, etc.). Seasonal heating. ...
... In Planetarium except as noted. Introduction. The Celestial Sphere. Directions. Star maps. Star motions during the night. Martin Luther King Day. No lab session, but there is still homework. Seasonal motions. Path of the Sun (Analemma, etc.). Seasonal heating. ...
Are we alone? - School of Physics
... Can we stop the machines? • In 1962, if you turned off all the computers in the world, it would have had little effect. • In 2004, the same experiment would have devastating consequences (e.g., financial system collapses, no electricity, no water, no fuel, no public transport). • This process will ...
... Can we stop the machines? • In 1962, if you turned off all the computers in the world, it would have had little effect. • In 2004, the same experiment would have devastating consequences (e.g., financial system collapses, no electricity, no water, no fuel, no public transport). • This process will ...
Time and Diurnal Motion 1a. The Earth Is Flat
... • Anaximander (580 BC) invents idea of celestial sphere. (?) • Eudoxus (360 BC) makes early map of constellations • Hipparchus (130 BC) made a star catalog of 850 stars with some sort of coordinates • Claudius Ptolemy (150 A.D.?): The first really accurate map, 48 constellations, 1025 stars with mea ...
... • Anaximander (580 BC) invents idea of celestial sphere. (?) • Eudoxus (360 BC) makes early map of constellations • Hipparchus (130 BC) made a star catalog of 850 stars with some sort of coordinates • Claudius Ptolemy (150 A.D.?): The first really accurate map, 48 constellations, 1025 stars with mea ...
Planet Found In Nearest Star System To Earth
... [1] The components of a multiple star are named by adding uppercase letters to the name of the star. Alpha Centauri A is the brightest component, Alpha Centauri B is the slightly fainter second star and Alpha Centauri C is the much fainter Proxima Centauri. Proxima Centauri is slightly closer to Ear ...
... [1] The components of a multiple star are named by adding uppercase letters to the name of the star. Alpha Centauri A is the brightest component, Alpha Centauri B is the slightly fainter second star and Alpha Centauri C is the much fainter Proxima Centauri. Proxima Centauri is slightly closer to Ear ...
Astronomy Test One
... 15. It is June at the north pole, and you are watching the Sun all day and night. Describe what you see. a. the Sun never sets, it just does a big circle in the sky near the horizon b. the Sun never rises c. the Sun rises in the East, stays up for 12 hours, and sets in the West d. the Moon slowly c ...
... 15. It is June at the north pole, and you are watching the Sun all day and night. Describe what you see. a. the Sun never sets, it just does a big circle in the sky near the horizon b. the Sun never rises c. the Sun rises in the East, stays up for 12 hours, and sets in the West d. the Moon slowly c ...
Chapter 18 - "The Earth in Space"
... • Eclipses of the Sun and Moon – An eclipse is when the shadow of one object falls on the illuminated surface of another. – The Earth and moons shadows point away as a cone. • The inner cone of this shadow is called the umbra • The outer cone of this shadow is called the penumbra – Total solar ecli ...
... • Eclipses of the Sun and Moon – An eclipse is when the shadow of one object falls on the illuminated surface of another. – The Earth and moons shadows point away as a cone. • The inner cone of this shadow is called the umbra • The outer cone of this shadow is called the penumbra – Total solar ecli ...
Origin of the atmosphere and ocean First read this verse: Earth`s
... This tilt is responsible about the formation of the four seasons (summer, autumn, winter and spring) on the earth through the year. ...
... This tilt is responsible about the formation of the four seasons (summer, autumn, winter and spring) on the earth through the year. ...
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.