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Profile Documents Logout
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the submissions here
the submissions here

... Geophysics in Action at Yellowstone by Dmitriy Zhigunov Geysers indicate a magma chamber under the surface of the ground. The magma chamber heats up the surrounding rocks. Rainwater and melted snow work their way through fractures in the rock, and rises back to the surface when it reaches the hot r ...
Sun`s Exterior
Sun`s Exterior

... The Sun’s Surface The Sun has no solid surface. The features we see on the Sun are located where the Sun goes from opaque to transparent. This layer is known as the “photosphere”. The layers below are dense enough that light must scatter many, many times to flow outward. The Sun’s interior is opaqu ...
UNIT 2 - Orange Public Schools
UNIT 2 - Orange Public Schools

... composition, surface features) of planets. Demonstrate an understanding of the motion of the bodies in our Solar System. Use models, charts, illustrations, and other suitable representations to predict and describe regular patterns of motion for most objects in the Solar System. Explain how the Sun ...
1_Introduction
1_Introduction

... Presented without proof (life is too short). ...
class 4, F10 (ch. 2c and 3)
class 4, F10 (ch. 2c and 3)

... (otherwise equal), the best theory is the simplest theory-that is, the one with the fewest assumptions. • Heliocentric model is much simpler than Ptolemy’s model ...
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Document

... • Stellar parallax: – Parallax of nearby stars relative to background stars. – Good out to ~500 pc. ...
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Introduction

... Nearly all ancient civilisations practised astronomy at some level – Time of day or night – Seasons ...
Lighthouse in the Sky Quiz Q & A
Lighthouse in the Sky Quiz Q & A

... b. the observer closer to the GP of the body measures the smaller altitude. c. both observers measure the same altitude. d. the positions of the observers relative to the GP cannot be determined because the azimuths from each observer are not given. ...
Define the following terms in the space provided
Define the following terms in the space provided

celestial sphere.
celestial sphere.

... Observation: Stars, Sun, Moon and planets move in counterclockwise circles around north (south) celestial pole. Objects near the celestial equator move east to west when above the horizon (“rising” in east, “setting” in west). ...
Opposition of Jupiter - Hong Kong Observatory
Opposition of Jupiter - Hong Kong Observatory

... will be very bright, reaching a visual magnitude of about ­2.5*. This will be a good time to observe Jupiter, its Great Red  Spot and Jupiter's four largest satellites namely Io, Europa, Ganymede and Callisto. A telescope with a magnification of 40  times or above is preferred in observing Jupiter.  ...
– 1 – 1.
– 1 – 1.

... Canada began opertions in 1999. Using 1000 tons of heavy water (D2 O), it can detect all three flavors of ν, and provided the definitive evidence for ν oscillations. The Solution: New Physics After much searching, astronomers began to suggest that the answer was acually in our understanding of the p ...
Chapter 13 section 2
Chapter 13 section 2

... absolute magnitude is about average. The Sun shines with a yellow light. Although the Sun is an average star, it is much closer to Earth than other stars. Light from the Sun reaches Earth in about eight minutes. Light from other stars takes many years to reach Earth. The Sun is unusual in one way. I ...
Coronal Mass Ejection
Coronal Mass Ejection

... as its luminosity, by generating energy by thermonuclear fusion of hydrogen into helium. • Gravitational and thermal equilibrium determine the Sun’s internal structure and its rate of energy ...
Slide 1 - Hoover12
Slide 1 - Hoover12

... • Infrared wavelengths: 10-9 m to 10-3 m • Shortest are at long wavelength end of photographic and CCD detection ...
What makes a planet habitable?
What makes a planet habitable?

... TOP: This artist's concept depicts Kepler-186f, the first proven Earth-sized planet to orbit a distant star in the habitable zone, which is a range of distance from a star where liquid water might stay on a planet's surface. The discovery of Kepler-186f confirms that Earth-sized planets exist in the h ...
6.2 Measuring the Planets
6.2 Measuring the Planets

... on other planets - Now we have accurate measurements based on interactions with space probes ...
Navigation
Navigation

... • is a worldwide radio-navigation system formed from a constellation of 24 satellites and their ground stations. • GPS uses these "man-made stars" as reference points to calculate positions accurate to a matter of meters. In fact, with advanced forms of GPS you can make measurements to better than a ...
geography chapter – 1 the earth in the solar system previous
geography chapter – 1 the earth in the solar system previous

... The earth revolves round the Sun and completes its revolution in one year (365 ¼ days). Its axis is bent towards each by 23° 30’. Hence sometimes the North Hemisphere is bent towards the Sun while another time the South Hemisphere is bent towards the Sun. The Hemisphere which is bent towards the Sun ...
using a cepheid variable to determine distance
using a cepheid variable to determine distance

... The period-luminosity relation for classical (Pop.I) Cepheid can be expressed by the following equation L = 354 T1.152 where L is luminosity in solar units T is the period in days To find the absolute magnitude M once the luminosity is known, use the equation M = 4.8 - 2.5 log(L) ...
Stars - staff.harrisonburg.k12.va
Stars - staff.harrisonburg.k12.va

... of a star in the sky when viewed from two different positions in earth’s revolution. – The closer a star is, the larger its parallax, or apparent movement. The farther away a star is, the smaller its parallax. ...
Stars
Stars

... of a star in the sky when viewed from two different positions in earth’s revolution. – The closer a star is, the larger its parallax, or apparent movement. The farther away a star is, the smaller its parallax. ...
KEY Distance, Areas, Volumes-A sense of size and scale from the E
KEY Distance, Areas, Volumes-A sense of size and scale from the E

... Distances are one dimensional measurements. Distances are often measurements between two points in space. Length can be a measurement of the length, width or height of an object. American-English How many inches in a foot? 12 How many feet in a yard? ...
Question paper - Unit 5 (6PH05) - January 2012
Question paper - Unit 5 (6PH05) - January 2012

... Time: 1 hour 35 minutes You must have: Ruler ...
Answer - Brock physics
Answer - Brock physics

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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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