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Dwarf Planets
Dwarf Planets

... • Pluto’s moon Charon is almost as big as Pluto. • The pair can be viewed as a double planet and they are tidally locked to each other. • Charon has more water ice on the surface than Pluto. ...
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... 3. Which orbit would be the “most elongated”, or the “most flattened circle”? a. Eccentricity of .001 c. Eccentricity of 1.00 b. Eccentricity of 0.000 d. Eccentricity of .95 4. Where will the orbiting planet be traveling the fastest? ...
Space Study Guide 4.7
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... The northern hemisphere (top) of the earth has summer when it is tilted towards the sun. This is shown in the globe on the left. The northern hemisphere has winter when it is facing further away from the sun. This is shown in the globe on the right. How would you describe the sun? Include its approx ...
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Planetary Science
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Solar System Scaled Down: Lesson on Proportions
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... 3. How long does it take light to travel 1.0 AU (from the Sun to Earth)? ________ T = d/v = 150 ,000 ,000 / 300 ,000 = 500 s or 8.3 minutes 4. How long does it take light to travel from the Sun to Pluto? ______________ Complete the table for all the planets. 5. How far is a light year in kilometres? ...
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Topic 7 - Holy Cross Collegiate

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Physics@Brock - Brock University
Physics@Brock - Brock University

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Solar SyStem - Lorenz Educational Press
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... The Sun is a star made up of hot gases that explode with energy similar to that of a continuously exploding nuclear bomb. It is the center of our Solar System. It provides us with heat and light. The Sun has been spinning on its axis and exploding for about 5 billion years. The Sun is an average-siz ...
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Lecture 1: Properties of the Solar System

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... • One of the processes of science and learning is to make a prediction and test it. • The inner planets include: Mercury, Venus, Earth and Mars. • The outer planets include: Jupiter, Saturn, Uranus, Neptune, and Pluto. • The Solar System is mostly empty space. • One of the major challenges of explor ...
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... 16. If Pluto were as large as the planet Mercury, we would classify it as a terrestrial planet. Answer: False. Terrestrial planets are the rocky planets from inner solar system. Pluto is an icy Kuiper Belt object. 17. Comets in the Kuiper belt and Oort cloud have long, beautiful tails that we can se ...
Artifact # 2, The Solar System
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Section 1 Characteristics of the Atmosphere

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... List as many uses for household batteries as you can think of. Name as many different sized batteries as you can. Write down all the places where you can buy batteries. List the prices of different batteries by looking through store catalogues. ...
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Planetary Science - Laboratory for Atmospheric and Space Physics
Planetary Science - Laboratory for Atmospheric and Space Physics

... All rings lie predominantly within their planet’s Roche limit, where tidal forces would destroy a self-gravitating fluid body. They are also within the planet’s magnetosphere, and in the case of Uranus, they are within the upper reaches of the planetary atmosphere. For each planet, the rings are qu ...
01 Geography and History 1.1
01 Geography and History 1.1

... •  The Earth is a sphere but it is not perfectly round. It is slightly flattened at the poles. ...
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Late Heavy Bombardment



The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, corresponding to the Neohadean and Eoarchean eras on Earth. During this interval, a disproportionately large number of asteroids apparently collided with the early terrestrial planets in the inner Solar System, including Mercury, Venus, Earth, and Mars. The LHB happened after the Earth and other rocky planets had formed and accreted most of their mass, but still quite early in Earth's history.Evidence for the LHB derives from lunar samples brought back by the Apollo astronauts. Isotopic dating of Moon rocks implies that most impact melts occurred in a rather narrow interval of time. Several hypotheses are now offered to explain the apparent spike in the flux of impactors (i.e. asteroids and comets) in the inner Solar System, but no consensus yet exists. The Nice model is popular among planetary scientists; it postulates that the gas giant planets underwent orbital migration and scattered objects in the asteroid and/or Kuiper belts into eccentric orbits, and thereby into the path of the terrestrial planets. Other researchers argue that the lunar sample data do not require a cataclysmic cratering event near 3.9 Ga, and that the apparent clustering of impact melt ages near this time is an artifact of sampling materials retrieved from a single large impact basin. They also note that the rate of impact cratering could be significantly different between the outer and inner zones of the Solar System.
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