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Ch. 3 Sec. 5 Notes
Ch. 3 Sec. 5 Notes

... *Most comets are found in one of two regions: 1. Kuiper belt: doughnut-shaped region that extends from beyond Neptune's orbit to 100 times Earth's distance from the sun 2. Oort Cloud: spherical region of comets that surrounds the solar system out to more than 1,000 times the distance between Pluto a ...
motionofobjects
motionofobjects

... set in the west, due to the earth’s rotation. However, like the moon, the planets usually move eastward against the background of stars. • How fast they move depends on their distance from the earth and their orbital distance from the sun. ...
27.1 Review - geraldinescience
27.1 Review - geraldinescience

... 9 ___________ is the process that caused early Earth to  form three distinct layers. ...
The Kuiper Belt and the Oort Cloud
The Kuiper Belt and the Oort Cloud

... Sedna travels in a long, elliptical orbit between 76 and nearly 1,000 AU from the sun. Since Sedna's orbit takes it to such an extreme distance, its discoverers have suggested that it is the first observed body belonging to the inner Oort Cloud. In July 2005, a team of scientists announced the disc ...
TRUE/FALSE:
TRUE/FALSE:

... Impact cratering exists everywhere there is a solid surface. Since differentiation is driven by gravity, it would not work on low mass objects such as comets and small asteroids. ...
Newton`s Laws of Motion
Newton`s Laws of Motion

... (1) the tendency of an object to maintain a constant velocity, (2) the relationship between the net outside force on an object and the object’s acceleration, and (3) the principle of action and reaction. These laws and Newton’s law of universal gravitation can be used to deduce Kepler’s laws. Th ...
Equipment: Rulers, meter sticks, string, tennis balls, transparent tape
Equipment: Rulers, meter sticks, string, tennis balls, transparent tape

... average step. Rather than measure the orbit distances with a ruler you should "pace" the distance off. (Count how many of your steps it takes to pace off 10 meters, marked on the floor of the classroom with a measuring tape) Now you and your partners should go outside and build your own solar system ...
Knows that Earth is the only body in our solar system that
Knows that Earth is the only body in our solar system that

... Explain to students that they will create profiles of the eight planets in the solar system. Each group in the class will present a written and oral report about a planet. The written report will outline how astronomers study planets and moons. Presentations should include photos, illustrations, and ...
Mountain Skies - Pisgah Astronomical Research Institute
Mountain Skies - Pisgah Astronomical Research Institute

... Now  the  Messier  objects  are  famous  as  nebulae,  galaxies  and  star  clusters.   The  planets:    The  brilliant  planet  Venus  continues  to  serve  us  as  our  “Evening  Star”  high  in  the   west  as  the  sky  darkens.    On  the  12th  it  will  reach  its  greatest  elongation  when ...
Astronomy 1010
Astronomy 1010

... carbon-rich These 2 types are formed at different distances from the Sun Processed meteorites can be removed from the surface of a planet by an impact. There are meteorites from Moon and Mars found on Earth. ...
Comets, Asteroids, and Meteorites
Comets, Asteroids, and Meteorites

... asteroids are a result of collisions in the Asteroid Belt that sent ...
Jovian Planet Systems (Chapter 11) Jupiter and Saturn are mostly
Jovian Planet Systems (Chapter 11) Jupiter and Saturn are mostly

... thinner outer layer of hydrogen gas, a thick ice mantle, and a core. All four planets contain about 10 Earth masses of ice, rock, and metal.The nebular theory of solar system formation can explain why Jupiter is heavier than Saturn, and Saturn heavier than Uranus/Neptune. Jupiter and Saturn have sim ...
The red planet is called Mars The sun is our closest star. Laika was
The red planet is called Mars The sun is our closest star. Laika was

... In 1590 the first star was discovered. Scientists do not count Pluto as a planet. Saturn is also known as the ringed planet. Venus is the hottest planet in the solar system. Uranus is four times the size of Earth. Mercury is the closest planet to the sun. All life on Earth depends on the sun. By Cha ...
What Causes Tides?
What Causes Tides?

... •  large, rocky debris (6 are over 3000 km diameter) ...
The planets in the solar system
The planets in the solar system

... It is not known with certainty how planets are formed. The prevailing theory is that they are formed during the collapse of a nebula into a thin disk of gas and dust. A proto-star (proto = early) forms at the core, surrounded by a rotating proto-planetary disk. Through a process called accretion (i. ...
Jupiter - deatonwilliams
Jupiter - deatonwilliams

... Jupiter is the largest planet All the other planets could fit inside it ...
Planetary Geology
Planetary Geology

File
File

... Venus—Hot, Hot, Hot! Venus is similar to the Earth in size but it’s not a place that you could live. Venus’ thick atmosphere of carbon dioxide and sulfuric acid traps the Sun’s heat. This means temperatures on the planet’s surface can go above 880 degrees Fahrenheit. How do we know? Scientists have ...
What Makes Up Our Solar System
What Makes Up Our Solar System

... atmospheres, rings and lots of satellites. It is thought that these planets may have a small solid core as large as three to 20 Earth masses at their center. The Kuiper Belt The Kuiper Belt is a disk-shaped region past the orbit of Neptune extending roughly 30 to 50 AU from the Sun and contains many ...
The Solar System 2/21/13
The Solar System 2/21/13

... • Planet - (1) orbit around the Sun, (2) enough mass for gravity to make spherical, (3) cleared its orbital neighborhood of debris • Dwarf Planet - satisfies (1) and (2) : Pluto, Ceres, Eris • Small Solar System Bodies - not planets, dwarf planets or moons ...
Solar System Teacher Tips
Solar System Teacher Tips

... three known moons: Charon, Nix, and Hydra. Pluto’s orbit is very elliptical, bringing it closer to the sun than Neptune during part of its orbit. Haumea – (formerly known as 2003 EL61) Found in the Kuiper Belt, Haumea has two moons, Hi’aka, and Namaka. Discovered in 2003 by the team headed by Mike B ...
The Planets
The Planets

... complex as well as contained some flaws. For example, one of the problems was explaining why Mars, Jupiter, and Saturn seemed to occasionally reverse their direction of orbit. An even more complex arrangement resulted in order to solve this; however, the whole system seemed to make sense despite the ...
Some Basic Facts to Know
Some Basic Facts to Know

... • No spacecraft visits, so little is known • Pluto probably quite similar to Triton. • Charon is half as big as Pluto. • Debate about whether Pluto should be called a planet. • Very low mass. • Eccentric, tilted orbit. • Similar to some comets. ...
mars
mars

... plants growing on the surface, while the moon has very little weather to alter its appearance. •Saturn isn't the only ringed planet, other gas giants such as Jupiter, Uranus and Neptune also have rings, they are just less obvious. •Footprints and tyre tracks left behind by astronauts on the moon wil ...
Temperature and Formation of our Solar System
Temperature and Formation of our Solar System

... their parent stars - called “hot Jupiters.” • These planets often appear to be the sole large body in their system. • The above two facts are due to a selection effect - the effects of smaller planets and those located at larger distances from their parent stars are difficult to detect. ...
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Definition of planet



The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.
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