8th Grade Science The Solar System Chapter 12 Study Guide The
... 1. heliocentric vs. geocentric models 2. Sun contributes 99% of mass of solar system B. How the Solar System Formed 1. Scientists believe the solar system formed about 4.5 billion years ago from a nebula cloud that condensed 2. Eight planets in order 3. Inner planets are closer to the Sun, smaller i ...
... 1. heliocentric vs. geocentric models 2. Sun contributes 99% of mass of solar system B. How the Solar System Formed 1. Scientists believe the solar system formed about 4.5 billion years ago from a nebula cloud that condensed 2. Eight planets in order 3. Inner planets are closer to the Sun, smaller i ...
Celestial Objects
... For many centuries, most people assumed the Sun and other stars orbited—or moved around— our planet, Earth. This is called the geocentric model of the solar system. (Geo- means “Earth,” so geocentric means “Earth-centered.”) It is easy to see why so many people thought this. As we look at the sky du ...
... For many centuries, most people assumed the Sun and other stars orbited—or moved around— our planet, Earth. This is called the geocentric model of the solar system. (Geo- means “Earth,” so geocentric means “Earth-centered.”) It is easy to see why so many people thought this. As we look at the sky du ...
Oort Cloud Formation and Dynamics
... or less (Gladman and Duncan, 1990; Holman and Wisdom, 1993; Levison and Duncan, 1993; Grazier et al., 1999a,b). The major exception to this rule is in the Kuiper belt, where some orbits remain stable for billions of years (Holman and Wisdom, 1993; Duncan et al., 1995; Kuchner et al., 2002). [Here, w ...
... or less (Gladman and Duncan, 1990; Holman and Wisdom, 1993; Levison and Duncan, 1993; Grazier et al., 1999a,b). The major exception to this rule is in the Kuiper belt, where some orbits remain stable for billions of years (Holman and Wisdom, 1993; Duncan et al., 1995; Kuchner et al., 2002). [Here, w ...
Chapter 19 Star Formation
... colorful emission line nebulae shown in this chapter are just this same molecular gas after a massive stars has started pouring out photons. ...
... colorful emission line nebulae shown in this chapter are just this same molecular gas after a massive stars has started pouring out photons. ...
Ch. 19 (Starbirth)
... This work is protected by United States copyright laws and is provided solely for the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permit ...
... This work is protected by United States copyright laws and is provided solely for the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permit ...
Chapter 19 Star Formation
... nebulae shown in this chapter are just this same molecular gas after a massive stars has started pouring out photons. ...
... nebulae shown in this chapter are just this same molecular gas after a massive stars has started pouring out photons. ...
Chapter 19 Star Formation
... nebulae shown in this chapter are just this same molecular gas after a massive stars has started pouring out photons. ...
... nebulae shown in this chapter are just this same molecular gas after a massive stars has started pouring out photons. ...
Star Fromation and ISM
... age – those stars have already used up their fuel and have moved off the main sequence. ...
... age – those stars have already used up their fuel and have moved off the main sequence. ...
GEOL 3045: Planetary Geology
... Formation Theories The classical & resonant KBOs probably not primordial – Inclinations & eccentricities too high – Three formation theories: Long-term effects of planetary perturbations Resonant sweeping due to planetary migration Massive scatterers resulting in impacts & gravitational per ...
... Formation Theories The classical & resonant KBOs probably not primordial – Inclinations & eccentricities too high – Three formation theories: Long-term effects of planetary perturbations Resonant sweeping due to planetary migration Massive scatterers resulting in impacts & gravitational per ...
Fulltext PDF
... but which are unable to collapse because of an excess of thermal, turbulent, rotational and magnetic energy over gravitational. The second phase, which lasts typically 106 years, involves dissipation of much of this energy. The third phase, the protostellar collapse phase, starts when fragments of - ...
... but which are unable to collapse because of an excess of thermal, turbulent, rotational and magnetic energy over gravitational. The second phase, which lasts typically 106 years, involves dissipation of much of this energy. The third phase, the protostellar collapse phase, starts when fragments of - ...
Chapter 9 Asteroids, Comets, and Dwarf Planets
... iceball even larger than Pluto. • Eris even has a moon: Dysnomia. ...
... iceball even larger than Pluto. • Eris even has a moon: Dysnomia. ...
STAR FORMATION
... CCDs were used first in spy satellites, then by astronomers and today in digital cameras. • The other half went to Charles K. Kao, who while working in England in 1966 demonstrated pure enough glass would allow fiber optic cables to work; hence the internet. • All are Americans, though Kao is also B ...
... CCDs were used first in spy satellites, then by astronomers and today in digital cameras. • The other half went to Charles K. Kao, who while working in England in 1966 demonstrated pure enough glass would allow fiber optic cables to work; hence the internet. • All are Americans, though Kao is also B ...
Solar System
... Age of the Solar System • All objects in the Solar System seem to have formed at nearly the same time, out of the same original cloud of gas and dust • Radioactive dating of rocks from the Earth, Moon, and some asteroids suggests an age of about 4.5 billion yrs • A similar age is found for the Sun ...
... Age of the Solar System • All objects in the Solar System seem to have formed at nearly the same time, out of the same original cloud of gas and dust • Radioactive dating of rocks from the Earth, Moon, and some asteroids suggests an age of about 4.5 billion yrs • A similar age is found for the Sun ...
What happened to Pluto?
... • Cometlike objects (but much larger) orbiting within or at the orbit of Neptune. • Neptune Trojans - analogous to Jupiter’s Trojans follow or lead Neptune in its orbit by 60 degrees. • Centaurs - large TNO-like objects orbiting between Saturn and Neptune. Prototype: 2060 Chiron • Probably have same ...
... • Cometlike objects (but much larger) orbiting within or at the orbit of Neptune. • Neptune Trojans - analogous to Jupiter’s Trojans follow or lead Neptune in its orbit by 60 degrees. • Centaurs - large TNO-like objects orbiting between Saturn and Neptune. Prototype: 2060 Chiron • Probably have same ...
Chapter 7
... size from a few meters to 1000 km across (about 1/10 the Earth’s diameter) – Comets are icy bodies about 10 km or less across that can grow very long tails of gas and dust as they near the Sun and are vaporized by its heat ...
... size from a few meters to 1000 km across (about 1/10 the Earth’s diameter) – Comets are icy bodies about 10 km or less across that can grow very long tails of gas and dust as they near the Sun and are vaporized by its heat ...
Asteroids, Comets, and Pluto: The Small Pieces
... that asteroids came from a planet that got too close to a bigger planet. The gravity from the larger planet pulled apart the smaller object. The third theory suggests that asteroids were starting to form into the shape of a planet, but Jupiter interfered with accretion. Accretion is the process thro ...
... that asteroids came from a planet that got too close to a bigger planet. The gravity from the larger planet pulled apart the smaller object. The third theory suggests that asteroids were starting to form into the shape of a planet, but Jupiter interfered with accretion. Accretion is the process thro ...
Inner_and_Outer_Planets_Using_Kidspiration Lesson
... Inner and Outer planets Using Kidspiration Kindergarten 5th Six Weeks Lesson Name: Inner and Outer Planets Using Kidspiration TEKS: K.2A, K.2D Technology TEKS: 1A, 1B, 2A, 2B, 7A, 7B, 11A, 11B Objective: Student is expected to sort inner and outer planets through the use of a Kidspiration template. ...
... Inner and Outer planets Using Kidspiration Kindergarten 5th Six Weeks Lesson Name: Inner and Outer Planets Using Kidspiration TEKS: K.2A, K.2D Technology TEKS: 1A, 1B, 2A, 2B, 7A, 7B, 11A, 11B Objective: Student is expected to sort inner and outer planets through the use of a Kidspiration template. ...
Falling Stars
... spotted the comet and reported their finding. The comet they found was not a big, bright comet. It is so small that it can only be seen with a telescope. The comet Tempel-Tuttle is about two-and-a-half miles in diameter. When comets get close to the Sun, they begin to warm up and their icy material ...
... spotted the comet and reported their finding. The comet they found was not a big, bright comet. It is so small that it can only be seen with a telescope. The comet Tempel-Tuttle is about two-and-a-half miles in diameter. When comets get close to the Sun, they begin to warm up and their icy material ...
modern astronomy
... The Four Terrestrial Planets • “Terrestrial”: Earth-like • Mercury, Venus, Earth, Mars ...
... The Four Terrestrial Planets • “Terrestrial”: Earth-like • Mercury, Venus, Earth, Mars ...
Asteroids and Comets and Meteors, Oh My!
... Sometimes, there are meteor showers. It’s exciting to watch a meteor shower. You usually see four or five meteors in an hour. During a meteor shower, you might see more than 80 meteors in an hour. Scientists also watch these meteors. They record the numbers, the brightness, and the paths of the met ...
... Sometimes, there are meteor showers. It’s exciting to watch a meteor shower. You usually see four or five meteors in an hour. During a meteor shower, you might see more than 80 meteors in an hour. Scientists also watch these meteors. They record the numbers, the brightness, and the paths of the met ...
The formation of the Solar system
... • Planetesimals beyond the orbit of Mars failed to accumulate into a protoplanet due to the large gravitational field of Jupiter constantly disturbing their motion. These are in the asteroid belt and also include the Trojan asteroids. • Planetesimals further out were “kicked” into outer orbits and f ...
... • Planetesimals beyond the orbit of Mars failed to accumulate into a protoplanet due to the large gravitational field of Jupiter constantly disturbing their motion. These are in the asteroid belt and also include the Trojan asteroids. • Planetesimals further out were “kicked” into outer orbits and f ...
Light: The Cosmic Messenger
... • What caused the orderly patterns of motion in our solar system? – Solar nebula spun faster as it contracted because of conservation of angular momentum – Collisions between gas particles then caused the nebula to flatten into a disk – We have observed such disks around newly forming ...
... • What caused the orderly patterns of motion in our solar system? – Solar nebula spun faster as it contracted because of conservation of angular momentum – Collisions between gas particles then caused the nebula to flatten into a disk – We have observed such disks around newly forming ...
Oort cloud
The Oort cloud (/ˈɔrt/ or /ˈʊərt/) or Öpik–Oort cloud, named after Dutch astronomer Jan Oort and Estonian astronomer Ernst Öpik, is a theoretical spherical cloud of predominantly icy planetesimals believed to surround the Sun at a distance of up to around 100,000 AU (2 ly). This places it at almost half of the distance to Proxima Centauri, the nearest star to the Sun, and in interstellar space. The Kuiper belt and the scattered disc, the other two reservoirs of trans-Neptunian objects, are less than one thousandth as far from the Sun as the Oort cloud. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance.The Oort cloud is thought to comprise two regions: a spherical outer Oort cloud and a disc-shaped inner Oort cloud, or Hills cloud. Objects in the Oort cloud are largely composed of ices, such as water, ammonia, and methane.Astronomers conjecture that the matter composing the Oort cloud formed closer to the Sun and was scattered far into space by the gravitational effects of the giant planets early in the Solar System's evolution. Although no confirmed direct observations of the Oort cloud have been made, it may be the source of all long-period and Halley-type comets entering the inner Solar System, and many of the centaurs and Jupiter-family comets as well. The outer Oort cloud is only loosely bound to the Solar System, and thus is easily affected by the gravitational pull both of passing stars and of the Milky Way itself. These forces occasionally dislodge comets from their orbits within the cloud and send them towards the inner Solar System. Based on their orbits, most of the short-period comets may come from the scattered disc, but some may still have originated from the Oort cloud.