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Maps & Projections - New York Science Teacher
Maps & Projections - New York Science Teacher

... Polaris and a persons latitude in the Northern Hemisphere The true shape of Earth Observations of the sky are affected by Earth rotations ...
Revolutions of Earth
Revolutions of Earth

File
File

Lesson 120125 - WordPress.com
Lesson 120125 - WordPress.com

... different sizes placed was a perfect shape between each, this meant that there had to be 6, and only 6, planets What was their spacing? Why this spacing? Maybe the 5 perfect objects, in the correct order, would give the correct distances between planets ...
Law of Universal Gravitation
Law of Universal Gravitation

... follows an inverse-square law • The greater the distance from Earth’s center, the less an object will weigh • You may weigh 300N at sea level, but only 299N at the top of Mount Everest ...
Sizing-up the planets activity
Sizing-up the planets activity

... students calculate scale diameters of the other eight planets and the sun. 3) Using poster paper, construct scale models of each planet and the sun. *Note: use drawing compass to draw smaller, inner planets. Use 22 cm piece of string to draw larger outer planets by holding one end of string on the p ...
Ay123 Fall 2011 STELLAR STRUCTURE AND EVOLUTION Problem Set 5
Ay123 Fall 2011 STELLAR STRUCTURE AND EVOLUTION Problem Set 5

... temperature for the same value of ρ. Make sure the temperature range of your plot covers both ionized and non-ionized states. 2. Assume the Sun is fully ionized and fully convective all the way to its surface. (a) Show that the sound speed close to the surface is given by c2 = (γ − 1) g z where z = ...
The Solar System 2003
The Solar System 2003

... Saturn became famous by beauty of its bright rings. Regardless they have radius over 100,000 km, they are at most a few hundred metres thick. They look as a series of thousands of differently bright and differently transparent ringlets, but in reality they are composed of individual icy–stony fragme ...
Sem one 2011 review KEY
Sem one 2011 review KEY

Lightest exoplanet found in nearest star system to Earth
Lightest exoplanet found in nearest star system to Earth

Inferior planets.
Inferior planets.

... March 13, 1781. By 1790 it was realized that its orbit was not as expected. Conclusion: another unknown planet was “perturbing” its motion. • 1845- Adams calculated a position for the unknown planet and sent it to the Astronomer Royal Airy. Airy gave him a test problem to check him out, but Adams re ...
A Census of the Solar System
A Census of the Solar System

... 1. Planets and their satellites all lie in the same plane - the ecliptic – to within a few degrees 2. Sun’s rotational equator aligned with ecliptic 3. Planetary orbits are nearly circular ellipses 4. Planets all revolve in same W -> E direction 5. Sun and planets all rotate on axes in same W –E dir ...
ASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy
ASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy

... ● Our sun is unique in its relationship with earth and allows for life to exist. ● The sun’s structure consists of the corona, photosphere, chromosphere, transition zone, convection zone, radiation zone and the core, each with their own properties and characteristics. ● Nuclear fusion occurs within ...
ASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy
ASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy

... ●   Our sun is unique in its relationship with earth and allows for life to exist. ●   The sun’s structure consists of the corona, photosphere, chromosphere, transition zone, convection zone, radiation zone and the core, each with their own properties and characteristics. ●   Nuclear fusion occurs w ...
The Sun and Planets Homework Solutions 4.
The Sun and Planets Homework Solutions 4.

... Calculate the following quantities for the orbits below: periastron and apoastron distances, minimum and maximum orbital speeds, and orbital period. Report your distances in AU, speeds in km/s, and periods in days. a) Earth orbits the Sun at a cozy average distance of 1 AU with a relatively small ec ...
Topic 4: Earth-Moon-Sun
Topic 4: Earth-Moon-Sun

... A tide is the periodic rise and fall of sea level, caused by a giant wave formed by the gravitational attraction between the Earth, Sun, and Moon. Because the Moon is so much closer, it plays more of a role than the Sun. The tidal range is the difference between the level of the ocean at high and lo ...
Grade 7 Science
Grade 7 Science

Unit 2 - Astronomy
Unit 2 - Astronomy

... area and after a gigantic explosion, matter began to ...
Unit Plan
Unit Plan

... 3. Describe the motion of circumpolar constellations over the course of the night. 4. Explain the following units of measure: degree, minutes of arc, seconds of arc. 5. Approximately how many degrees of the sky does your finger width occupy? An outstretched hand? A fist? 6. In terms of angular size, ...
CHAPTER 13: GRAVITATIONAL INTERACTIONS 13.1
CHAPTER 13: GRAVITATIONAL INTERACTIONS 13.1

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... typically seen in galaxies that contain many recently formed stars. Explain why this is so (Chapter 2 of the BR textbook may be useful here). (3 points)! ...
Mercury - alexanderscience8
Mercury - alexanderscience8

... set of rings in the solar system. We now know that Saturn has 62 moons in addition to its complex ring system. Have you ever seen the Southern or Northern Lights? Earth isn't the only planet that puts on these beautiful light shows, which are also called the "aurora". Aurora have been seen at both p ...
PPT - UBC
PPT - UBC

... Polaris (North Star) not brightest (only 50th) Sirius is brightest ...
Formation of the Solar System • Questions
Formation of the Solar System • Questions

... Growth stopped at Earth-sized planets. Continuing impacts with planetesimals altered the planets • Earth’s moon • Reversal of Venus’ rotation, etc. • Dumped much of atmospheres onto planets ...
Dynamics and Space Summary Notes
Dynamics and Space Summary Notes

< 1 ... 228 229 230 231 232 233 234 235 236 ... 369 >

Astronomical unit

The astronomical unit (symbol au, AU or ua) is a unit of length, roughly the distance from the Earth to the Sun. However, that distance varies as the Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 7011149597870700000♠149597870700 meters (about 150 million kilometers, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
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