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Name: ______ Date: Chapter 8 How Earth Changes Over Time
Name: ______ Date: Chapter 8 How Earth Changes Over Time

...  Some igneous rocks form from ___magma____, below the Earth’s surface.  Magma becomes trapped as it ___pushes_____ its way to the surface and ___cools____ slowly over many centuries.  As it cools, igneous rocks form large _____crystals____ which give the rocks a coarse texture.  Igneous rocks th ...
Moon and planets
Moon and planets

... There was a very clever man about 400 years ago named Sir Isaac Newton who was thinking about this sort of problem. The first question he asked was “What do we mean by fall down?” If falling down means that everything falls in the same direction, and the world is round, things on the bottom of the E ...
Educator`s Guide for Oasis in Space
Educator`s Guide for Oasis in Space

... solid surface. Of the five outer planets only Pluto has a solid surface. Gas giant planets are really made of gas— about 90-95% of their composition! Imagine a rocky pea surrounded by 100 miles of frozen gas. The outer gas giant planets are significantly bigger than the terrestrial planets. If Jupit ...
ASTRONOMY 161
ASTRONOMY 161

... 1) Why are eclipses not frequent? (medium) 2) During a total lunar eclipse, what is seen by an observer on the surface of the Moon? (easy) 3) For an observer on the Moon, does Earth show ...
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... Which of the following inner solar system bodies has the densest atmosphere? ...
Construct Planetary Orbits Around the Sun Student Activity Sheet
Construct Planetary Orbits Around the Sun Student Activity Sheet

... 1. Place a blank sheet of paper on top of the cardboard and place two thumbtacks or pins about 3 cm apart. 2. Tie the string into a circle with a circumference of 15 to 20 cm. Loop the string around the thumbtacks. With someone holding the tacks or pins, place a pencil inside the loop and pull it ta ...
The Celestial Sphere Friday, September 22nd
The Celestial Sphere Friday, September 22nd

... The view from Earth: Early afternoon of Thursday, Sept 7, 2006: full Moon in Pisces. Late evening of Wednesday, Oct 4, 2006: Moon in Pisces again (but now it is gibbous). ...
Worksheet Answers
Worksheet Answers

... difference between Earth to the moon and Earth to Pluto. __Student answers vary. Earth to Pluto is 1 thousand and 7 hundred (1,700) times longer in distance than Earth to moon____________________________________________ ...
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NOTES SHEET - The Planets! (Page 181) Object Mercury Venus

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Lecture 6

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... theory, planets are composed of materials that equili­ brated with nebular gas in a narrow range of temper­ atures, and these temperatures decreased with increas­ ing distance from the Sun. Variations in the metalsilicate ratio of chondritic meteorites, which could not be accommodated in this model, ...
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Planetary Motion

... come back to where you started twice). After you've watched each object carefully for a while, record in Table 1 a “yes” or “no” whether you ever see the object undergo retrograde motion. Object ...
Mariner 10 Bulletin # 27 - Space Exploration Resources
Mariner 10 Bulletin # 27 - Space Exploration Resources

... The successful flight of Mariner 10 to the planet Mercury marks another historic milestone in America's continuing exploration of the solar system. With this mission, we will begin to end centuries of speculation about our planetary neighbor closest to the Sun. On behalf of all Americans, I extend w ...
PowerPoint Presentation - A Tour of the Solar System
PowerPoint Presentation - A Tour of the Solar System

... km high and 600 km across); volcanoes in the northern Tharsis region that are so huge they deform the planet's roundness; and a gigantic equatorial rift valley, the Valles Marineris. This canyon system would stretch from New York to Los Angeles; the Grand Canyon could fit into one of the side canyon ...
Astronomy - Rockaway Township School District
Astronomy - Rockaway Township School District

... • Patterns of the apparent motion of the sun, the moon, and stars in the sky can be observed, described, predicted, and explained with models. (MS-ESS1-1) • Earth and its solar system are part of the Milky Way galaxy, which is one of many galaxies in the universe. (MS-ESS1-2) ESS1.B: Earth and the S ...
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Astronomy, Chapter 1 Learning Target #1 Explain the motion of the

... …such as how long it would take for a new moon or full moon to occur during the next cycle c) Compare/contrast a solar and lunar eclipse d) Identify factors that create tides e) Explain different types of tides that occur on Earth What causes of the phases of the moon? The changing relative position ...
minimum mass solar nebulæ and planetary migration
minimum mass solar nebulæ and planetary migration

... of surface density Σ(r) = 538 × (r/10 AU)−3/2 kg.m−2 . This disk is not massive enough for Jupiter to enter in the type III, runaway regime of migration. Consequently, Jupiter is caught up by Saturn and the two planets enter in mean motion resonance after about 104 years. This almost stops their mig ...
Basic Astronomy Note - Mr. Dewey – Grade 7/8
Basic Astronomy Note - Mr. Dewey – Grade 7/8

... Our sun is one star of billions that make up our galaxy (Milky Way). It is 100,000 light years in diameter, which means it would take 100,000 years to travel from edge to edge at the incredible speed of light (roughly 300,000 kilometers per second). The Milky Way, that bright band of light in the ni ...
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... 22. When a comet comes close to the Sun, it must move faster because (A) energy is conserved. (B) it is too hot. (C) because Kepler’s First Law says so. (D) it does not move faster. (E) both (A) & (C) are correct. 23. At the Earth equator, the Sun is directly overhead (A) everyday. (B) once in a blu ...
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... Like Pluto, 2003 UB313 is one of the icy bodies in the so-called Kuiper belt that swarms beyond Neptune. It is the most distant object ever seen in the Solar System. Its very elongated orbit takes it up to 97 times farther from the Sun than is the Earth - almost twice as far as the most distant poin ...
New "planet" is larger than Pluto
New "planet" is larger than Pluto

... Like Pluto, 2003 UB313 is one of the icy bodies in the so-called Kuiper belt that swarms beyond Neptune. It is the most distant object ever seen in the Solar System. Its very elongated orbit takes it up to 97 times farther from the Sun than is the Earth - almost twice as far as the most distant poin ...
Existence of collisional trajectories of Mercury, Mars and Venus with
Existence of collisional trajectories of Mercury, Mars and Venus with

... It has been established that, owing to the proximity of a resonance with Jupiter, Mercury’s eccentricity can be pumped to values large enough to allow collision with Venus within 5 Gyr (refs 1–3). This conclusion, however, was established either with averaged equations1,2 that are not appropriate ne ...
Oct 2015 - Bays Mountain Park
Oct 2015 - Bays Mountain Park

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Answers - CyberCoupons.com
Answers - CyberCoupons.com

... A. The object being dated exists in a closed system B. The initial conditions of the object being dated are known C. The object being dated exists in an open system D. The object being dated has had a constant rate of decay 6. True or False? By taking rocks that are known to have been formed in the ...
The Universe
The Universe

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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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