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... – The star we call the Sun and all the celestial bodies that orbit the Sun  including Earth  the other eight planets  all their various moons  smaller bodies such as asteroids and comets ...
Page # 320 15
Page # 320 15

Planets and the Sun How Do We Size Up?
Planets and the Sun How Do We Size Up?

... Planets and the Sun How Do We Size Up? Seventh Grade Science ...
Astronomy Study Guide axis - A real or imaginary line through the
Astronomy Study Guide axis - A real or imaginary line through the

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4.3 – Earth`s Revolution
4.3 – Earth`s Revolution

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The Sun, The Moon and The Earth

... the centre of the solar system • Its millions of miles away from the Earth • The Sun is a huge ball of burning gas and has a surface temperature of 5,000 degrees Celsius ...
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Solar System

... Solar System ...
Heliocentric model
Heliocentric model

... – Greatest elongation – for Venus and Mercury, when they are at their greatest angular separation from the Sun. Can be either eastern or western ...
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... The model of the solar system with Earth at the centre of it is called the _______________ model. When the Moon block’s the Sun’s light to Earth it is called a ___________________________. The Sun uses _________________ as its energy source. To measure the distance between stars in distant galaxies, ...
Solar System Cloze
Solar System Cloze

Lecture 5 - Orbits, Sizes, Precession
Lecture 5 - Orbits, Sizes, Precession

... moves in a straight line at a constant speed, unless acted upon by an outside force 2. The force on an object is directly proportional to its mass and acceleration. 3. The principle of action and reaction: whenever one body exerts a force on a second body, the second body exerts an equal and opposit ...
Public Lecture - Size of the Universe
Public Lecture - Size of the Universe

... – Used to describe “smaller” distances (ie: Earth to Moon) ...
Race to the Moon
Race to the Moon

... How can you find Polaris? • Find the end of the basket of Big Dipper and draw a line to the tip of the handle of the Little Dipper. ...
The Sun - rosedalegrade9astronomy
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... Interactions of Earth and Sun • Energy emitted by the Sun: • Stars and other celestial objects emit energy consisting of electromagnetic waves that travel at the speed of light, known as electromagnetic radiation. • Most of the Sun’s energy will be absorbed by the Earth’s atmosphere, but some will ...
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Study Guide for 1ST Astronomy Exam

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The Sun

... Compared with everything else in the solar system, the sun is huge – I mean, really, really big. In fact, the Sun makes up 99% of the mass of the solar system. The sun produces energy through nuclear fusion – NOT fission. Memory trick: the sun has one s, and so does fusion. Fusion happens in the cor ...
Section 17.1 - CPO Science
Section 17.1 - CPO Science

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lung volumes and capacities

... Large system of gases, dust, and many stars GALAXY The mutual force of attractions that exists between all objects in the universe. GRAVITY Process by which heat is trapped by a planet’s atmosphere. GREENHOUSE EFFECT The unit of measure for distance in space equaling the distance light travels in 1 ...
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Quarter 3 Benchmark Study Guide w/ Answer Key

... 27. Planet’s orbits are very large, so scientists express distance in the solar system in Astronomical Units. 28. The presence of craters in large, smooth plains tells scientists that, volcanism is no longer occurring. 29. What did plate tectonics cause on Mars? The planet's mantle moved, pushing up ...
Understand Planetary Motion
Understand Planetary Motion

... Possibly the best observational astronomer… ever Measured stellar and planetary positions with outstanding precision! ...
answer key
answer key

... the sun (the two “loops” cross in only two places, and both earth and moon have to be at the “cross” at the same time for an eclipse to occur) 16.If their moon is the same angular diameter as their star OR LARGER, YES. Otherwise it’s called a transit.*** 17.The apparent motion of a nearer object aga ...
Document
Document

... • Since the parallax of stars is very small, it is measured in parsec (parallax second) distance d= 1/p OR p = 1/d • 1 parsec = 3.26 LY = 206,265 AU ...
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Document

... •to find the definition “Solar System”, •to tell about some interesting facts about our solar system, •to find out why people are so interested in exploration of our Universe. ...
Content Standards/Performance Indicators: Key Pre
Content Standards/Performance Indicators: Key Pre

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Earth and Stars
Earth and Stars

... shadow cast by a gnomon at Alexandria. He found a value of 1/50th of a circumference (i.e. 7.12°) and derived the value of the terrestrial circumference: 50 x 5.000 = 250.000 stadia. Although our idea of the exact value of the stadium (which was not the same at Athens, Alexandria or Rome) is fairly ...
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Astronomical unit

The astronomical unit (symbol au, AU or ua) is a unit of length, roughly the distance from the Earth to the Sun. However, that distance varies as the Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 7011149597870700000♠149597870700 meters (about 150 million kilometers, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
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