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Astronomy Unit Study Guide
Astronomy Unit Study Guide

...  How long does it take the moon to go through a cycle of phases?  Why do we only see one side of the moon?  How long is the moon’s rotation/revolution?  What is the relative location of the moon around the Earth at each phase?  What is the relative location of the moon during a lunar and solar ...
1 a. List the plants from smallest to largest: Mercury, Mars, Venus
1 a. List the plants from smallest to largest: Mercury, Mars, Venus

... There  is  less  information  on  the  outer  planets  compared  to  the  inner  planets  for   several  reasons.  Firstly,  the  inner  planets  can  be  seen  through  a  telescope   making  viewing  the  planet  so  much  easier  t ...
Solar System Review
Solar System Review

... layers around their inner rocky cores. Why don't the inner planets have as much gas as the outer planets? The planets have stable orbits. They don't fly away from the sun, and they don't fall into the sun. What keeps them from falling into the sun? What keeps them from flying away from the sun? Appr ...
planet - FieldStudy.com
planet - FieldStudy.com

... MOON – Earth’s moon, ¼ the diameter of Earth, highlands, maria, no water or atmosphere, Apollo Landers. MARS: Terrestrial, thin CO2 atmosphere (less than 1/100 atm), cold, polar caps, “started” plate tectonic activity, may have had life in past, about half the size of Earth, Viking Landers, and most ...
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File

... A planet in an elliptical orbit is not at a constant distance from the Sun. Perihelion: When a planet is closest to the sun Aphelion: When a planet is farthest away. ...
Comparing Earth, Sun and Jupiter
Comparing Earth, Sun and Jupiter

...  The smallest dust grains then orbit with the gas; larger grains orbit more quickly (since surface area increases less quickly than mass).  Since dust grains are moving at different speeds, they tend to collide with one another, and will often stick. This could grow objects ~1 km across within ~10 ...
Sun_and_space_technology_study guide
Sun_and_space_technology_study guide

... 17. Large, violent solar eruptions that occur near sunspots are _____________. Solar flares 18. The diameter of the sun is __________ that of the Earth. More than 100 times 19.The Earth’s magnetic field protects us from solar winds and produces a phenomenon known as ____________. auroras 20. In the ...
Inner and Outer Planets - Sonoma Valley High School
Inner and Outer Planets - Sonoma Valley High School

... Planets of our solar system ...
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Gravity - Swansea Edunet
Gravity - Swansea Edunet

... Around the Earth is the Ozone Layer and it protects the Earth from the Sun’s rays. Mars is very, very cold. Mars is the only planet that we have sent a robot to. There is no life on Mars. Mercury, Venus, Earth and Mars are made of metal and rock. ...
Study Jams: A Day on Earth Quiz
Study Jams: A Day on Earth Quiz

... O the Earth’s rotation on its axis O the Moons orbit around the Earth O the Sun’s rotation on its axis 2. How long does it take Earth to make one full rotation? O one day O one year O one hour O one month 3. What does it take the Earth one full year to complete? O one day on Venus O one phase of the ...
Formation of the Solar System
Formation of the Solar System

... • Contain lots of heavy elements— ________________________________ • Lost less dense gases—not enough _______________________ to hold them • All have solid surfaces and are _________ and ____________ than the outer planets ...
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Components of the Solar System Chapter 16
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... together by the gravitational pull of a star named the Sun. ► As the Sun began to heat up, gravity began to pull-in dust an gases, which clumped together and form our planets. Rocks that did not become large enough to form planets remained as asteroids. ...
Soaring into our Solar System - Etiwanda E
Soaring into our Solar System - Etiwanda E

... away from the sun, which are classified as the outer planets. ...
6th grade Test Review KEY
6th grade Test Review KEY

... The ice begins to melt/vaporize, and the comet appears to grow a “tail”. 17. Explain why mass and weight are two different things. Mass is the amount of space that an object takes up; weight depends on the pull of gravity. 18. Name all of the objects that you might find in our solar system. Asteroid ...
Planets in our solar system
Planets in our solar system

... Venus is like Earth because it is almost the same size, has gravity and is made of similar materials. People think that Venus used to have oceans like Earth but it got warm and they all evaporated. It is named after the Roman goddess of love and beauty. ...
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astronomy_SaturndayMPhysics07

... Formation of the Solar System Condensation theory: Interstellar dust grains help cool cloud, and act as condensation nuclei ...
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... and ice joined together chemically or as a result of collisions or electric forces of various kinds to form larger lumps, a bit like comets or asteroids. Eventually, within each orbit more and more lumps combined to form huge ‘planetesimals’, until in most orbits all the matter was absorbed within a ...
Unit 5: Review Game Questions
Unit 5: Review Game Questions

... so there are probably many similar solar systems. So far, the ones found have had Jovian planets in more eccentric orbits and closer to their stars in general than in our case. 35) Jovian 36) density 37) rocky 38) icy 39) Earth, and all terrestrial planets, formed inside the frost line from rocky an ...
Origins: Earth is Born - LathamWHS13-14
Origins: Earth is Born - LathamWHS13-14

... 4. Why is it that the inner planets are all made out of heavier elements, while the outer planets (Jupiter, Saturn, Uranus, and Neptune) are all made out of lighter elements? What happened to the lighter elements? ...
Solar System Rap Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn
Solar System Rap Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn

... Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune Pluto. Let’s Go, YO, YO I’m the Sun, when you see me from a far, I twinkle, Why Because I‘m a star. I give off heat and light and when you’re not facing me (what, what) it’s night. I’m Mercury, I’m closest to the sun, and my surface ...
HW8 (due 4/3/14)
HW8 (due 4/3/14)

... 1. What are the four main processes that shape the surfaces of the terrestrial planets? 2. Give a specific example of a historical impact of an asteroid or comet that hit the Earth. Why are impact craters rare on the surface of Earth but plentiful on the Moon? 3. Three different things can happen wh ...
Asteroids, Comets, and Meteorites, Oh My! - Willoughby
Asteroids, Comets, and Meteorites, Oh My! - Willoughby

... Asteroids – A rocky lump of frozen gas that can range in size from a few hundred feet to several hundred miles wide. Matter that is similar in composition to the planets. Sometimes, it’s called a Planetoid. Orbit in a belt between Mars and Jupiter. Largest asteroid known: Ceres (1801) ...
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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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