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27.2 Models of the Solar System (p 691
27.2 Models of the Solar System (p 691

The Outer Planets - Mother Teresa Regional School
The Outer Planets - Mother Teresa Regional School

...  Uranus’s axis of rotation is tilted at an angle of about 90 degrees from the vertical. Astronomers believe that billions of years ago Uranus was hit by an object that knocked it on its side.  Uranus’s five largest moons have icy, cratered surfaces. They also have lava flow on their surfaces. Uran ...
How was the Solar System Formed?
How was the Solar System Formed?

... Solar System: The Sun and all of the planets and other bodies that travel around it. Planet: any of the primary bodies that orbit the Sun; a similar body that orbits another star. Solar Nebula: a rotating cloud of dust and gas from which the sun and planets formed; also any nebula from which stars a ...
Middle School - Starry Night Software
Middle School - Starry Night Software

... 2. Describe how the planets move around the Sun in elliptical orbits; and the nearcoplanetarity of the orbits, along with the principle of conservation of momentum, is evidence essential to our understanding of how the Solar System was originally formed. ...
Develop a classification system based on observed structural
Develop a classification system based on observed structural

... system based on observed structural characteristics. ...
Models of the Solar System
Models of the Solar System

... circle that has been stretched out along one axis. Most planets’ orbits are nearly circular, and so are only slightly elliptical. • The plane of Earth’s orbit is called the ecliptic plane. ...
Solar System – Odds & Ends - Saint Paul Public Schools
Solar System – Odds & Ends - Saint Paul Public Schools

... Jupiter, Saturn, Uranus, Neptune, and Pluto are planets. No scientific basis. 2) Historical plus: Mercury through Pluto are planets, as is any newly discovered object larger than Pluto. But why is Pluto’s size the cutoff? ...
True or False: If the statement is true, write “True”, if it is “False” tell
True or False: If the statement is true, write “True”, if it is “False” tell

... _____ The Earth’s seasons are caused by its closeness to or distance from the sun. _____________________________________________________________________________________ _____ Earth is the only planet with two moons. ____________________________________________________________________________________ ...
Section 2: Inner Planets
Section 2: Inner Planets

... • Has areas of water ice • Has areas composed of hydrocarbonsorganic compounds that contain hydrogen and carbon. • All living things are made of carbon. • Scientists are interested in the possibility of life here. ...
Unit: Southern Europe
Unit: Southern Europe

... GLE 0507.6.2: I can use charts to locate and identify star patterns. This means I can use a star chart to identify constellations in the night’s sky throughout the year. I can explain why it is important to know the time of night, the time of year, and the latitude to correctly identify the constell ...
Lesson 1: Models of the Solar System
Lesson 1: Models of the Solar System

...  Observed planets moving among the stars  Early observers thought Earth was at the center of the universe  (Chinese) Thought Earth was under a dome of stars  (Greek) Thought the Earth was inside rotating spheres nested inside each ...
8th Planets of the solar system Planets Rocky Gas Giants
8th Planets of the solar system Planets Rocky Gas Giants

... Saturn is the second largest in the solar system with an equatorial diameter of 119,300 kilometers (74,130 miles). Much of what is known about the planet is due to the Voyager explorations in 198081. Saturn is visibly flattened at the poles, a result of the very fast rotation of the planet on its ax ...
The Solar System
The Solar System

... On earth, one rotation is equal to about 24 hours. Some planets spin faster than Earth, so a day would be much shorter. ...
Astronomy 1001
Astronomy 1001

... to normal “human” scales • Stars are very far away – Would take Voyager 1 100,000 years to reach Alpha Centauri ...
Solar System JEOPARDY REVIEW
Solar System JEOPARDY REVIEW

... giants and the 4 terrestrial planets. Gas giants: Saturn, Jupiter, Neptune, Uranus; Terrestrial: Earth, Mars, Mercury, Venus 400 – What is a 400 – What makes a gas sunspot? How often is giant planet different there a peak in from a terrestrial planet? sunspot activity? An Gas giant planets are area ...
Benchmark One Study Guide: Science Benchmark Wed
Benchmark One Study Guide: Science Benchmark Wed

... 8. A hypothesis should be formed after which step of the scientific method? 9. When should safety rules and precautions be planned? ...
Science 9 Test Review-Space Answers 1. pg 434 2a
Science 9 Test Review-Space Answers 1. pg 434 2a

... as hydrogen and helium Orbit – the path an object takes as it moves around another object i.e. planets orbit around the sun 3. Answer each of the following questions. a. Put the planets in order starting with the sun and working outwards. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune ...
Solar System - pgfl.org.uk
Solar System - pgfl.org.uk

... sits in the middle while the planets travel in circular paths (called orbits) around it. These nine planets travel in the same direction (counter- clockwise looking down from the Sun's North Pole). The picture on the right shows the different paths and positions of each planet. ...
Solar System Review - answer key
Solar System Review - answer key

... The planets orbit around the sun in an elliptical, but nearly circular, pattern. 6. Why are dwarf planets and plutoids not considered planets? Planets must orbit around the sun, have enough gravity to pull themselves into a spherical shape, and need to be “alone” in their orbit (not share their orbi ...
Handout 3 1-2 ppt
Handout 3 1-2 ppt

DAILY LESSON PLAN FORMAT
DAILY LESSON PLAN FORMAT

... a) cosmology including the Big Bang theory; and b) the origin and evolution of stars, star systems, and galaxies. Essential knowledge or skills to be taught:  Describe the development of exploration of the Moon  Identify the relative positions and motions of Earth, the Sun and the Moon & describe ...
Star Constellations - rosedalegrade9astronomy
Star Constellations - rosedalegrade9astronomy

Our Solar System Do Nows and Discussions
Our Solar System Do Nows and Discussions

... How does the speed of rotation change with mass? It increases with mass, Jovian rotate extremely fast, creating the unique cloud lines How does the speed of revolution change as we enter the perihelion? The planet will speed up when closest to the sun (observed by Kepler) What are some of the ways t ...
Exploring Space What’s Out There?
Exploring Space What’s Out There?

... celestial object that travels around a star • Orbit = the path that a celestial object takes around another object • Solar system = the sun and all the celestial objects that travel around it ...
Science 9 Test Review-Space Answers 1. pg 434 2a
Science 9 Test Review-Space Answers 1. pg 434 2a

... An unmanned spacecraft sent to investigate objects in space such as planets, moons, asteroids etc. They are sent to take pictures, gather data, investigate and send information back to Scientists here on Earth. They are unmanned because of the length of time they spend in space. It will be impractic ...
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Formation and evolution of the Solar System



The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.
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