Easy Science no 98
... Draw a horizontal and a vertical line across the middle of the poster paper. Write the directions north, south, east and west on the paper as shown. Use the modelling clay to make the pencil stand up at the spot where the two lines cross. You have now made a Sun tracker. On a sunny day, go out early ...
... Draw a horizontal and a vertical line across the middle of the poster paper. Write the directions north, south, east and west on the paper as shown. Use the modelling clay to make the pencil stand up at the spot where the two lines cross. You have now made a Sun tracker. On a sunny day, go out early ...
Giant Stars
... • The rapid helium burning is called a helium flash. – Star slightly contracts after explosion – Horizontal branch of HR diagram ...
... • The rapid helium burning is called a helium flash. – Star slightly contracts after explosion – Horizontal branch of HR diagram ...
Chapter17_New
... into a spiral pattern. The heliopause is thought to be nearer in the direction toward which the Sun is moving because the heliosphere is compressed by the interstellar gas through which the heliosphere moves. The Maunder minimum, a period within which few sunspots were seen, coincided with a time of ...
... into a spiral pattern. The heliopause is thought to be nearer in the direction toward which the Sun is moving because the heliosphere is compressed by the interstellar gas through which the heliosphere moves. The Maunder minimum, a period within which few sunspots were seen, coincided with a time of ...
Assignment 2 - utoledo.edu
... ____ 33. In Ptolemy's system the planets orbit the Earth and not the Sun. How did the system explain the retrograde motion of planets like Jupiter? a. the planets were not moving along the ecliptic but all over the celestial sphere b. the planets moved in very elongated ellipses, and their speed i ...
... ____ 33. In Ptolemy's system the planets orbit the Earth and not the Sun. How did the system explain the retrograde motion of planets like Jupiter? a. the planets were not moving along the ecliptic but all over the celestial sphere b. the planets moved in very elongated ellipses, and their speed i ...
July - Westchester Amateur Astronomers
... their planets are freshly formed, and thus warmer and brighter than older planetary bodies. Astronomers know of more than five hundred distant planets, but very few have actually been seen. Many exoplanets are detected indirectly by means of their “wobbles”—the gravitational tugs they exert on their ...
... their planets are freshly formed, and thus warmer and brighter than older planetary bodies. Astronomers know of more than five hundred distant planets, but very few have actually been seen. Many exoplanets are detected indirectly by means of their “wobbles”—the gravitational tugs they exert on their ...
powerpoint - High Energy Physics at Wayne State
... Several dozen families are found. Physical similarities between largest asteroids of given families. ...
... Several dozen families are found. Physical similarities between largest asteroids of given families. ...
Astronomy 350 Fall 2011 Homework #1
... form of hydrogen. On average, hydrogen atoms in the universe today are found to have a number density (number of particles per unit volume, sometimes also called a “concentration”) of 2 × 10−8 atoms/cm3 . We will later see that the observable universe today has radius of about R = 4000 Mpc, where 1 ...
... form of hydrogen. On average, hydrogen atoms in the universe today are found to have a number density (number of particles per unit volume, sometimes also called a “concentration”) of 2 × 10−8 atoms/cm3 . We will later see that the observable universe today has radius of about R = 4000 Mpc, where 1 ...
As two continental plates move toward each other, what landforms
... correct because 2 continental masses will push into each other and “crumple” the edges to form mountains ...
... correct because 2 continental masses will push into each other and “crumple” the edges to form mountains ...
`earthlike` and second the probability that they have suitable climate
... The remaining requirement is that the earthlike planets be ‘habitable’ which we take to mean that they have a suitable climate. (They will also need suitable chemistry, but this will be nearly guaranteed by the type of star around which they formed.) What would a suitable climate be? To make an est ...
... The remaining requirement is that the earthlike planets be ‘habitable’ which we take to mean that they have a suitable climate. (They will also need suitable chemistry, but this will be nearly guaranteed by the type of star around which they formed.) What would a suitable climate be? To make an est ...
Other Interesting Aspects of Astronomy
... • They originate from comets and asteroids, whose orbits happen to cross near Earth’s orbit and have debris which burns into atmosphere • The small particles burn up in the ionosphere and leave a brightly ionized trail that we see • More particles earlier on in the solar system, when it was a lot me ...
... • They originate from comets and asteroids, whose orbits happen to cross near Earth’s orbit and have debris which burns into atmosphere • The small particles burn up in the ionosphere and leave a brightly ionized trail that we see • More particles earlier on in the solar system, when it was a lot me ...
PHYS3380_102615_bw
... of energy - as cloud shrank, gravitational energy converted to kinetic energy - collisions convert KE into random motions of thermal energy density and temperature greatest at center • Spinning - conservation of angular momentum causes rotation to increase as cloud collapses all material doesn’t col ...
... of energy - as cloud shrank, gravitational energy converted to kinetic energy - collisions convert KE into random motions of thermal energy density and temperature greatest at center • Spinning - conservation of angular momentum causes rotation to increase as cloud collapses all material doesn’t col ...
Rotation & revolution
... Summer Solstice is the longest day of the year in the Northern Hemisphere (Sun directly over Tropic of Cancer-23.5°N-at noon) Winter solstice = shortest day of the year for Northern Hemisphere (Sun directly over Tropic of ...
... Summer Solstice is the longest day of the year in the Northern Hemisphere (Sun directly over Tropic of Cancer-23.5°N-at noon) Winter solstice = shortest day of the year for Northern Hemisphere (Sun directly over Tropic of ...
Astronomy 360 - indstate.edu
... arcseconds) and indicate how far north or south of the celestial equator (defined by projecting the Earth's equator onto the celestial sphere) the object lies. Lines of longitude have their equivalent in lines of right ascension (RA), but whereas longitude is measured in degrees, minutes and seconds ...
... arcseconds) and indicate how far north or south of the celestial equator (defined by projecting the Earth's equator onto the celestial sphere) the object lies. Lines of longitude have their equivalent in lines of right ascension (RA), but whereas longitude is measured in degrees, minutes and seconds ...
Sun, Moon, and Stars - Norwood House Press
... over a period of 29 days. It reflects light from the Sun as it orbits, which accounts for its phases. Earth orbits around the Sun, and turns on its axis over a period of 24 hours. Stars are suns that are far away from Earth and can be seen in groups called constellations. Stars appear to move becaus ...
... over a period of 29 days. It reflects light from the Sun as it orbits, which accounts for its phases. Earth orbits around the Sun, and turns on its axis over a period of 24 hours. Stars are suns that are far away from Earth and can be seen in groups called constellations. Stars appear to move becaus ...
Sample Schedule 2012
... have no rings orbiting them. Outer planets formed further away from the sun in the protoplanetary disk where conditions were cooler. This cool environment meant that volatile icy compounds could remain solid. There is an abundance of these compared to the high melting point compounds (metals and s ...
... have no rings orbiting them. Outer planets formed further away from the sun in the protoplanetary disk where conditions were cooler. This cool environment meant that volatile icy compounds could remain solid. There is an abundance of these compared to the high melting point compounds (metals and s ...
Life cycle of a star
... Relatively old star Diameter is about 100 times bigger than when first formed. Cooler than when formed (the surface temperature is under 6,500 K). ...
... Relatively old star Diameter is about 100 times bigger than when first formed. Cooler than when formed (the surface temperature is under 6,500 K). ...
Galaxies - Where Science Meets Life
... Very little gas or dust. No recent star formation within galaxy. ...
... Very little gas or dust. No recent star formation within galaxy. ...
HW attached
... you need to understand that there is a gravitational attraction between you and Earth, between Earth and the Moon, and between Earth and the Sun. You can’t feel the gravitational attraction between you and Earth. However, it is what keeps your feet planted firmly on the ground. Imagine spinning arou ...
... you need to understand that there is a gravitational attraction between you and Earth, between Earth and the Moon, and between Earth and the Sun. You can’t feel the gravitational attraction between you and Earth. However, it is what keeps your feet planted firmly on the ground. Imagine spinning arou ...
Atoms (“indivisible”)
... Surface Gravity – strength of a planet’s gravitational pull at its surface - depends on a planet’s size & mass ...
... Surface Gravity – strength of a planet’s gravitational pull at its surface - depends on a planet’s size & mass ...
Earth Science 24.3 The Sun
... the appearance of boiling. This up and down movement of gas is called convection. Besides causing the grainy appearance of the photosphere, convection is believed to be responsible for the transfer of energy in the uppermost part of the sun’s interior. ...
... the appearance of boiling. This up and down movement of gas is called convection. Besides causing the grainy appearance of the photosphere, convection is believed to be responsible for the transfer of energy in the uppermost part of the sun’s interior. ...
Astronomy 100—Exam 1
... A. For each and every force, there is an equal force in the opposite direction. B. The acceleration of an object is proportional to the net force on it and inversely proportional to its mass. C. In the absence of a net force, an object either remains at rest or moves with a constant speed in a strai ...
... A. For each and every force, there is an equal force in the opposite direction. B. The acceleration of an object is proportional to the net force on it and inversely proportional to its mass. C. In the absence of a net force, an object either remains at rest or moves with a constant speed in a strai ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.