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COMMENTS ON HOMEWORK 1 In many cases the answer to a
COMMENTS ON HOMEWORK 1 In many cases the answer to a

... critical points were left unexplained or a few words preceded by a critically placed 'since' or 'because' were provided as a poor substitute for an answer. Take time to think through the explanation requested, and then write it out in your own words. Remember a neatly drawn diagram is often helpful. ...
Glossary Annual Motion – the Earth`s orbital motion around the sun
Glossary Annual Motion – the Earth`s orbital motion around the sun

Solar System - Spring Branch ISD
Solar System - Spring Branch ISD

... is a sun centered universe ...
How far away are the Stars?
How far away are the Stars?

... • If distance to an object is known, we can measure its size. Diameter 2  Dis tan ce ...
Unit 2 Study Guide - Effingham County Schools
Unit 2 Study Guide - Effingham County Schools

... 26. This terrestrial planet (Venus) has the densest atmosphere and this terrestrial planet (Mercury) does not have any atmosphere. 27. Name the terrestrial planets. Mercury, Venus, Earth, and Mars 28. Venus’ atmosphere is very dense and causes the planet to be much hotter than all of the other plane ...
Phases of the Moon - Cold Lake Middle School
Phases of the Moon - Cold Lake Middle School

... -The nearest star to our sun is the triple star Alpha Centauri (sometimes called Proxima Centauri) which is 40 trillion km or more than 4 light years away from Earth. This means it takes light over 4 years to reach us from that star. Light travels the distance of the Earth’s equator 7.5 times in 1 s ...
Useful equations - Department of Physics and Astronomy
Useful equations - Department of Physics and Astronomy

... is the distance between star and the edge of the habitable zone which corresponds with temperature T – in whatever system of units – and r [AU ] is that distance expressed in astronomical units (AU), the distance between Earth and Sun. ...
Beautiful Venus - The Evening Star
Beautiful Venus - The Evening Star

... That extremely bright object currently found in the southwestern sky after sunset, often referred to as the evening star, is the planet Venus. This so-called “twin” of Earth is only so in relative size, being about 82% the mass of the Earth. Because it is one of just two planets closer to the sun th ...
Science 9 Unit E Section 1.0
Science 9 Unit E Section 1.0

... Mercury is the closest planet to the Sun. Its surface is very similar to that of the Moon. Like the Moon, Mercury has no atmosphere and therefore no protection from the bombardment of meteoroids, asteroids, and comets. The scars of millions of years of impacts can be seen. Other parts of Mercury’s s ...
Solar_System_Vocab_1
Solar_System_Vocab_1

... Inner planet – any of the four planets closest to the Sun (Mercury, Venus, Earth, and Mars). o The distinction between “inner” and “outer” is due to the very large gap between Mars’ orbit and Jupiter’s orbit. o There is a large asteroid belt between the inner planets and the outer planets. ...
Cosmic Distance Ladder Terrence Tao (UCLA)
Cosmic Distance Ladder Terrence Tao (UCLA)

... • But the period was not uniform; when the Earth moved from being aligned with Jupiter to being opposed to Jupiter, the period had lagged by about 20 minutes. He concluded that light takes 20 minutes to travel 2 AU. (It actually takes about 17 minutes.) • Huygens combined this with a precise (for it ...
planets
planets

...  The planets can be divided into two groups  The inner terrestrial (Earth-like) planets (Mercury, Venus, Earth, Mars): small, dense  The outer Jovian (Jupiter-like) planets (Jupiter, Saturn, Uranus, and Neptune): gaseous, giant, low density  Pluto is an exception; it is an "icy planet".  A pla ...
1 - Alice Pevyhouse
1 - Alice Pevyhouse

... 6. Within a constellation, a recognizable pattern of stars is often called: 7. The Sun’s apparent path around the celestial sphere is called: 8. How did Ptolemy’s Geocentric model explain the retrograde motion of planets like Jupiter? 10. Kepler found that the orbit of a stable planet is always in t ...
File
File

... Rotation- The spinning of an object on its axis. Day and night are caused by Earth’s rotation on its axis. It takes 1 day for the Earth to rotate around once on its axis. Light travels in a straight line until it strikes an object and is either reflected or absorbed. The Earth and the moon both rota ...
The Universe - Lancaster High School
The Universe - Lancaster High School

The Milky Way
The Milky Way

... animations and PowerPoint effects such as ...
Study Guide Astronomy
Study Guide Astronomy

... Due to the counterclockwise rotation of the Earth, the sun appears to move from east to west as it rises and sets each day Why is the North Star important? The North star is the closest star to the North Pole. It provides a stable marker in the Northern Hemisphere for which direction is North. Which ...
Questions - HCC Learning Web
Questions - HCC Learning Web

... Determine the order of magnitude of the gravitational force that you exert on another person 2.0 m away. In your solution, state the quantities you measure / estimate and their values. ...
Gravitation - Galileo and Einstein
Gravitation - Galileo and Einstein

chapter3 - Empyrean Quest Publishers
chapter3 - Empyrean Quest Publishers

... • Compiled the most accurate (one arcminute) naked eye measurements ever made of planetary positions. • Still could not detect stellar parallax, and thus still thought Earth must be at center of solar system (but recognized that other planets go around Sun) • Hired Kepler, who used Tycho’s observati ...
1. For most of human history it was believed that Earth was at the
1. For most of human history it was believed that Earth was at the

... 3. In science, conceptual representations of observed phenomena are referred to as 4. Apparent retrograde motion occurs when a planet appears to ...
Summary of week 1:
Summary of week 1:

LESSON PLANS Week/Date: Dec. 1, 2014 Grade/Subject: Science
LESSON PLANS Week/Date: Dec. 1, 2014 Grade/Subject: Science

... Daily Objective Students will discover various parts of the Solar System and how they move through time. ...
Measuring Distances Beyond the Solar System
Measuring Distances Beyond the Solar System

... parallax to estimate the distances to stars as far as 100 ly away. For distances beyond this, using parallax becomes too imprecise. In the early 1990s, a unique satellite called the HIPPARCOS satellite was sent into space on C09-F02-UCOS9SB.ai a star-mapping mission. It was able to accurately measur ...
SNC 1D Astonomy
SNC 1D Astonomy

... revolution around the sun is 365.24 days. • It takes one day for Earth to make one rotation on its axis. • The first clocks were pillars and sticks in the ground and people used the shadows they made to tell the time. ...
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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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