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Age of the Earth III - PowerPoint Lecture Notes
Age of the Earth III - PowerPoint Lecture Notes

... recycled, and we need to look beyond Earth to find evidence of when the Earth solidified. ...
Weighing the Difference Faces of the Moon: Phases of the Moon
Weighing the Difference Faces of the Moon: Phases of the Moon

... making sure the arrow is pointed at the Earth. Now rotate the moon around the Earth with the arrow always pointing to the ground. In the first activity (where you pointed the arrow at the Earth while orbiting the Earth), what would inhabitants on Earth see of the moon? Would people see the same or d ...
Ch 24 Notes Paper Saver
Ch 24 Notes Paper Saver

...  Brahe charted the motions of celestial bodies before __________.  ____________________ Kepler used Brahe’s data to form the Laws of __________ Motion: 1. The path of a planet around the Sun is an __________. 2. A planet will travel _________when it is closer to the Sun & cover a greater distance ...
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... Compared the data from Brahe to Copernicus’ theory of planets revolving around the Sun in circular orbits The data did NOT support this theory ...
Eclipses and Forces - FSU
Eclipses and Forces - FSU

... Compared the data from Brahe to Copernicus’ theory of planets revolving around the Sun in circular orbits The data did NOT support this theory ...
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23 4 Minor Members of the Solar System

... Comets – pieces of rocky and metallic materials ...
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Mathematical Relationships of Solar System Bodies revealed using

... bodies (excluding Mercury), to that of Uranus ( = that of Venus to Neptune), and to planetary axial tilts, plus other evidence, show that the Earth has suffered NO expansion of any but a trifling amount over its whole life. The same can be said for its mass. B The rotation ratios of the planet coupl ...
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... Mercury takes 88 days. Earth takes 365 days (1 year). Mars takes 687 days. Jupiter takes 4330 days (or 12 Earth years). ...
The Sun-Earth
The Sun-Earth

... • The moon rises in the east and sets in the west • These daily motions result from the Earth’s rotation • The sun, moon, planets, and stars do not orbit around the Earth every day • It appears that way because we observe the sky from a planet that rotates ...
The Solar System
The Solar System

...  It takes 84 years to complete one orbit. That’s one complete circle around the sun.  Uranus, with no solid surface, is one of the gas giant planets.  Uranus gets its blue-green color from methane gas ...
Ptolemaic Model
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... Retrograde motion is: a.  The apparent backward=westward motion of a planet relative to stars as seen from Earth b.  Occurring at opposition to sun when the planet is at its brightest c.  Explained by the Greeks by a system of Deferents and Epicycles d.  Explained by Copernicus by the Earth lapping ...
The earth is a radio flashlight!
The earth is a radio flashlight!

... emitted by the current of charged particles around the earth from the outside. While the charged stream produces a vivid display down on the earth, it should be radiating radio waves out to space in all directions. Studying what it looks like from outside should help us understand the radiation that ...
Descriptive Astronomy (ASTR 108)
Descriptive Astronomy (ASTR 108)

... only able to condense in the cooler outer regions. 15) In light of modern solar system theory, why do the orbits of the planets all lie near the same plane? a) The Sun's gravity forced them into these orbits. b) The fast rotation of the early solar nebula offset the gravitational pull on material in ...
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curriculum map - Harlan Independent Schools

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Introductory Physics I (54

... 28) The ozone layer of the Earth’s atmosphere is hotter than the regions just above and just below it. Why? a) High speed winds produce considerable frictional heating in the ozone layer b) Solar ultraviolet radiation is absorbed in the ozone layer c) The solar wind strikes the ozone layer and heats ...
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... C. A giant volcanic eruption caused a mass extinction 65 million years ago. D. The Earth was hit by one or more objects from space 65 million years ago. ...
22.1 Early Astronomy
22.1 Early Astronomy

... without change in tilt. This changes the stars near the Pole, but does not affect the seasons. Over a period of 26,000 years. • Nutation- wobbling around the precessional axis. This is a change in angle- ½ degree one way or another. This occurs over an 18 year period. And is due to the Moon exclusiv ...
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... a meteor crossing the sky If the asteroid fragment is big enough, fist-sized or so, it won't burn up completely and will fall to the Earth as a meteorite These small meteorites do not explode or make craters when they hit They just hit like an extra large hailstone or a rock thrown from across th ...
Bell Ringer List the phases of the moon.
Bell Ringer List the phases of the moon.

... to stay in motion and if at rest to stay at rest. ...
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EARTH MOTIONS

... Apparent Motion of the Sun • The Sun appears to move from east to west at a rate of 15 o/hour. • The path of the sun changes with the seasons and with latitude. • Local solar noon- occurs when the sun reaches its highest point in the sky. • Only between 23.5 N and 23.5 S will the sun ever be ...
Solar System (Moon, Stars, Sun, Planets)
Solar System (Moon, Stars, Sun, Planets)

... • Largest planet (able to hold all other planets) • 60 known moons – Io, most volcanically active place in solar system – 3 of 4 large moons have icy surfaces • 1 day = @ 10 hours 1 year = 11.9 years ...
Earth, Moon, and the Sun
Earth, Moon, and the Sun

... Earth The Earth rotates on its axis.  It rotates counter-clockwise on its axis, counter-clockwise around the sun, and the moon rotates counter-clockwise around the Earth.  The Earth’s axis’s tilt, is at 23.5 degrees.  For the Earth to finish an entire rotation, it takes about 24 hours. ...
Quick Quiz - School
Quick Quiz - School

... C gets less if two objects get further apart. D does not depend on distance. 4 Which statement is true? A Gravity always pulls a spacecraft towards the nearest planet. B There is no gravity in space. C Gravity is the same at all times during a space journey. D Gravity depends on how close a spacecra ...
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Introduction to Astronomy and Astrophysics Introduction to

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The Solar System - School of Physics
The Solar System - School of Physics

... – Orbit about Earth, and Solar illumination. ...
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Earth's rotation



Earth's rotation is the rotation of the planet Earth around its own axis. The Earth rotates from the west towards east. As viewed from North Star or polestar Polaris, the Earth turns counter-clockwise.The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface. This point is distinct from the Earth's North Magnetic Pole. The South Pole is the other point where the Earth's axis of rotation intersects its surface, in Antarctica.The Earth rotates once in about 24 hours with respect to the sun and once every 23 hours 56 minutes and 4 seconds with respect to the stars (see below). Earth's rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tidal effects the Moon has on Earth's rotation. Atomic clocks show that a modern-day is longer by about 1.7 milliseconds than a century ago, slowly increasing the rate at which UTC is adjusted by leap seconds.
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