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How the Solar System Formed: The Nebular
How the Solar System Formed: The Nebular

... local regions to begin to contract gravitationally. These local regions of condensation will become the Sun and eventually be swept into infant planets (proto-planets or planetesimals) as well as their moons and other debris in the Solar System. While they are still condensing, the incipient Sun and ...
Object Orientation and Rotation
Object Orientation and Rotation

... Aside: Changing the basis of a matrix In what follows there will be a need to apply in world space a transformation that is expressed in terms of a local space. Assume that Mb is a matrix transform which converts from an original basis B1 into a new basis B2 (i.e. it may be a world transform conver ...
Lecture 44: This View of Life
Lecture 44: This View of Life

... NASA PIA00452 & PIA02228 ...
PH212Chapter10_12
PH212Chapter10_12

... wheel has a net forward velocity: 2v v zero not enough information to say back ...
Unit Title: Solar System  Colorado Teacher-Authored Instructional Unit Sample Science
Unit Title: Solar System Colorado Teacher-Authored Instructional Unit Sample Science

... Life Science ...
Unit - 2 The Earth and Its History- Students` Manual - CBSE
Unit - 2 The Earth and Its History- Students` Manual - CBSE

... own. They reflect the light they receive from the stars. The Earth is a planet and it receives its heat and light from the Sun. Asteroids: are a swarm of small bodies that revolve around the sun between the orbits of inner and outer planets, Mars and Jupiter. CERES is the largest asteroid. They are ...
3rd Grade Teacher Guide  - The University of Texas at Dallas
3rd Grade Teacher Guide - The University of Texas at Dallas

... However, you may wish to discuss them with your students. The asteroid belt should, of course, be located between Mars and Jupiter. A common misconception is that the asteroid belt is densely packed with rocky debris. In fact, on this scale you would need to grind up a fraction of a poppy seed to re ...
3rd Grade Teacher Guide  - The University of Texas at Dallas
3rd Grade Teacher Guide - The University of Texas at Dallas

... through our atmosphere (or the air, to keep it simple), that we see as light as they burn up. Because they look like tiny points of light, long ago people gave them the name falling stars. How far away are the other stars? If you wanted to put the nearest star to the Sun (Alpha Centauri) on your sca ...
ES 104 Laboratory # 2 INVESTIGATING THE SOLAR SYSTEM
ES 104 Laboratory # 2 INVESTIGATING THE SOLAR SYSTEM

... landed robot space probes on Mars, Venus, and the Moon, have landed people on the Moon, and have sophisticated telescopes to obtain data. We know that each planet and satellite (moon) has unique physical characteristics that set them apart from one another. We also know our solar system exhibits som ...
Lecture 19: Planet Formation I. Clues from the Solar System
Lecture 19: Planet Formation I. Clues from the Solar System

... The Formation of the solar system: Condensation and growth of solid bodies Large particles thus encounter a headwind which removes angular momentum and causes them to spiral inward toward the star. Small grains drift less. A meter-sized body at 1 AU would approach the Sun in ~ 100 yr! As a conseque ...
Astronomy - Ocee PTA
Astronomy - Ocee PTA

... are looking at the 1st quarter moon and will see that the right side of their moon is lit. As they turn towards the “Full” on the plate, they may need to raise the ball slightly above their head so the light shining on the ball is not blocked. They should see the entire face of the moon lit up; this ...
ch21_crct - Cobb Learning
ch21_crct - Cobb Learning

... 5. Based on the table, which of the following is a valid conclusion? A In general, each outer planet is about twice as far from the sun as the next closest planet. B Each period of revolution is unrelated to the average distance of each planet from the sun. C Among the outer planets, planets with th ...
What Goes Up Doesn`t Always Come Down
What Goes Up Doesn`t Always Come Down

... clouds glow with a dim light, and you can’t see the sun or stars. If you lived on Venus, you might never know of Earth, or stars, or other planets, since they are always hidden by the clouds. The high temperatures and lack of water mean that no life, as we know it, can exist here. Venus is closer to ...
What is our place in the universe?
What is our place in the universe?

... Earth orbits the Sun (revolves) once every year: • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris) • and rotating in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
unit - 4: dynamics
unit - 4: dynamics

... is known as rotatory motion. The axis of rotation may lie within the body or outside the body. If all the particles of a body move in a circular path about the axis of rotation, the rigid body is said to have pure rotational motion. When a body is in rotational motion about an axis, all the particle ...
Guide to the Sun Poster PDF
Guide to the Sun Poster PDF

... The sun has been ‘burning’ for more than 4.5 billion years and will continue to do so for several billion more. It is a massive collection of gas, mostly hydrogen and helium. Because it is so massive, it has immense gravity, enough gravitational force to hold all of its hydrogen and helium together ...
Rotational Motion Objectives: After reviewing this section you should
Rotational Motion Objectives: After reviewing this section you should

... handle, you will notice that it seems much heavier than if you lift the same mass with a short handle. A tight rope walker uses a long pole while balancing on the rope. This helps him maintain his balance because most of the mass of the pole is far away from the center of rotation. The pole has a la ...
The Solar System, Part I
The Solar System, Part I

... Because Mars is relatively close to Earth, astronomers from NASA have been able to send several spacecraft to explore that planet. NASA has sent several unmanned spacecraft to orbit Mars. NASA has also managed to send several small robotic vehicles, called rovers, to explore Mars’s surface. The phot ...
Solar System Roll Call - Sierra College Astronomy Home Page
Solar System Roll Call - Sierra College Astronomy Home Page

... (Charon). It will be visited by spacecraft in 2015. ► Soon in the 1990s other objects out where Pluto lived were being discovered. One of these, Eris, was found to be a little larger than Pluto ...
Jupiter - UC Berkeley Astronomy w
Jupiter - UC Berkeley Astronomy w

... • If Jupiter had 10x its mass, it would have same radius ! Add even more mass, and Jupiter would get smaller ! • Jupiter is as large as a planet can get. • Uranus & Neptune have less mass than Saturn, yet they have higher densities • They must be made of denser material: More Rock & Water ! ...
Lecture14-ASTA01
Lecture14-ASTA01

... asteroids, not in comets, which contradicts the importance of the ice line to inner-vs-outer planet division • Other reasons for relative unimportance of ice line are: • Migration and thus mixing of solids in the solar nebula • Roughly 1:1 mass ratio of ice and rock in comets – not important enough ...
Moon - Granite School District
Moon - Granite School District

... ago people saw the same thing and believed Earth was the center of the universe. It seemed Earth stood still and everything in the sky circled Earth. In 1852, a French scientist, Jean Bernard Foucault, did an experiment to show that Earth spins. He built a pendulum by attaching an iron ball with a p ...
Physics 101 Fall 02 - Youngstown State University
Physics 101 Fall 02 - Youngstown State University

... radius 25 m at a speed of 13 m/s. What should be the banking angle of the road for the car to safely negotiate the turn if the road is icy? ...
Gravity - WordPress.com
Gravity - WordPress.com

... whether it is a triple beam balance in your school's science lab or the bathroom scale in your house. Your weight is the measure of gravity's pull on you. Scientists often like to use the word mass instead of weight. For everyday matters, here on earth, your weight and your mass are the same, but th ...
Mystery Detectives
Mystery Detectives

... around the moon * *H. The time it takes for Earth to make one complete revolution around the sun* *J. The time it takes for Earth to make 365 revolutions around the sun* ...
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Earth's rotation



Earth's rotation is the rotation of the planet Earth around its own axis. The Earth rotates from the west towards east. As viewed from North Star or polestar Polaris, the Earth turns counter-clockwise.The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface. This point is distinct from the Earth's North Magnetic Pole. The South Pole is the other point where the Earth's axis of rotation intersects its surface, in Antarctica.The Earth rotates once in about 24 hours with respect to the sun and once every 23 hours 56 minutes and 4 seconds with respect to the stars (see below). Earth's rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tidal effects the Moon has on Earth's rotation. Atomic clocks show that a modern-day is longer by about 1.7 milliseconds than a century ago, slowly increasing the rate at which UTC is adjusted by leap seconds.
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