National Round Questions 2014
... SUPPOSE an organism at first tropic level has energy of 1500 J (joule). It may use 90% of this energy for itself and transfers only 10% to the next trophic level. So what wo ...
... SUPPOSE an organism at first tropic level has energy of 1500 J (joule). It may use 90% of this energy for itself and transfers only 10% to the next trophic level. So what wo ...
Celestial Sphere
... Venus goes through phases. Just like our Moon, Venus can appear as full as a disk or as a thin as a crescent. Venus, frequently the brightest object in the post-sunset or pre-sunrise sky, appears so small, however, that it usually requires binoculars or a small telescope to clearly see its current p ...
... Venus goes through phases. Just like our Moon, Venus can appear as full as a disk or as a thin as a crescent. Venus, frequently the brightest object in the post-sunset or pre-sunrise sky, appears so small, however, that it usually requires binoculars or a small telescope to clearly see its current p ...
PART 1 OBJECTS IN THE SOLAR SYSTEM 4.1 INTRODUCTION
... (thus their medium density) that are very far from the Sun. These are precisely the characteristics of the objects in what is known as the Kuiper belt. First proposed by Gerard Kuiper in 1951, many small icy objects, which have also been called “trans-Neptunian” objects and “ice dwarfs,” have now be ...
... (thus their medium density) that are very far from the Sun. These are precisely the characteristics of the objects in what is known as the Kuiper belt. First proposed by Gerard Kuiper in 1951, many small icy objects, which have also been called “trans-Neptunian” objects and “ice dwarfs,” have now be ...
Astronomy - Bemidji State University
... back to a point of focus. This reflecting mirror acts like a light-collecting bucket: the bigger the bucket, the more light it can collect. The reflector telescope that Newton designed opened the door to magnifying objects millions of times--far beyond what could ever be obtained with a lens. Newton ...
... back to a point of focus. This reflecting mirror acts like a light-collecting bucket: the bigger the bucket, the more light it can collect. The reflector telescope that Newton designed opened the door to magnifying objects millions of times--far beyond what could ever be obtained with a lens. Newton ...
Earth Science CA Standard Study Guide
... the planets where forming. There are two types of planets the inner(terrestrial) and the outer (gas planets) The terrestrial planets are rocky and have a solid surface The terrestrial planets from the Sun are Mercury, Venus, Earth, and Mars The gas planets also known as the gas giants are very large ...
... the planets where forming. There are two types of planets the inner(terrestrial) and the outer (gas planets) The terrestrial planets are rocky and have a solid surface The terrestrial planets from the Sun are Mercury, Venus, Earth, and Mars The gas planets also known as the gas giants are very large ...
tremaine_stanford
... high eccentricity (surprise number 1) • are chaotic (surprise number 2) •as the initial inclination approaches 90±, the maximum eccentricity achieved in a Kozai oscillation approaches unity ! collisions (surprise number 3) • mass and separation of companion affect period of Kozai oscillations, but n ...
... high eccentricity (surprise number 1) • are chaotic (surprise number 2) •as the initial inclination approaches 90±, the maximum eccentricity achieved in a Kozai oscillation approaches unity ! collisions (surprise number 3) • mass and separation of companion affect period of Kozai oscillations, but n ...
Astronomy: Earth and Space Systems
... Previous/future knowledge: In the 1st grade (1-3.1) the Sun was a feature in the daytime sky. In 4th grade (4-3.2) the Sun, a star, is compared to Earth. Studying nuclear fusion in stars and the formation of elements from that fusion is part of high school Earth Science (ES-2.4). It is essential for ...
... Previous/future knowledge: In the 1st grade (1-3.1) the Sun was a feature in the daytime sky. In 4th grade (4-3.2) the Sun, a star, is compared to Earth. Studying nuclear fusion in stars and the formation of elements from that fusion is part of high school Earth Science (ES-2.4). It is essential for ...
Review questions with attached answer key
... 1. A camera was placed in an open field and pointed toward the northern sky. The lens of the camera was left open for a certain amount of time. The result is shown in the photograph below. The angle of the arc through which two of the stars appeared to move during this time exposure is shown. ...
... 1. A camera was placed in an open field and pointed toward the northern sky. The lens of the camera was left open for a certain amount of time. The result is shown in the photograph below. The angle of the arc through which two of the stars appeared to move during this time exposure is shown. ...
Our Sun Produces Bizarre Radiation Bursts—Now NASA Knows Why
... riddle about our star’s gamma ray activity. By Alexandra E. Petri PUBLISHED FEBRUARY 14, 2017 For the first time, NASA telescopes have worked in tandem to watch blasts of high-energy radiation triggered by activity on the far side of the sun. The achievement will help scientists better understand er ...
... riddle about our star’s gamma ray activity. By Alexandra E. Petri PUBLISHED FEBRUARY 14, 2017 For the first time, NASA telescopes have worked in tandem to watch blasts of high-energy radiation triggered by activity on the far side of the sun. The achievement will help scientists better understand er ...
Introduction To Astronomy
... They trace out circles around the axis of rotation This image was taken at Mauna Kea by leaving the shutter open for a few hours; star trail pictures are easy to do for any anybody with a nice camera! ...
... They trace out circles around the axis of rotation This image was taken at Mauna Kea by leaving the shutter open for a few hours; star trail pictures are easy to do for any anybody with a nice camera! ...
Earth & Space
... • Astronomers have different theories: – About 5 billion years ago, when the Earth was still very young, it was struck by a Mars-sized planet. This impact could have tipped our planet over. – As the cloud of dust and gas collapsed when the universe was forming, the solar system did not form uniforml ...
... • Astronomers have different theories: – About 5 billion years ago, when the Earth was still very young, it was struck by a Mars-sized planet. This impact could have tipped our planet over. – As the cloud of dust and gas collapsed when the universe was forming, the solar system did not form uniforml ...
Earth
... What is known about stars? What is the sun made of? The sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silic ...
... What is known about stars? What is the sun made of? The sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silic ...
Chapter 2 Discovering the Universe for Yourself
... too small to notice with the naked eye 2. Earth does not orbit Sun; it is the center of the universe With rare exceptions such as Aristarchus, the Greeks rejected the correct explanation (1) because they did not think the stars could be that far away Thus setting the stage for the long, historical s ...
... too small to notice with the naked eye 2. Earth does not orbit Sun; it is the center of the universe With rare exceptions such as Aristarchus, the Greeks rejected the correct explanation (1) because they did not think the stars could be that far away Thus setting the stage for the long, historical s ...
CAREERS IN ASTRONOMY: GRADUATE SCHOOL AND TEACHING
... The Square Kilometre Array Telescope (SKA) project will be the world’s biggest Telescope and one of the biggest scientific projects ever. It will be made up of many large antennas spread over 3000Km (and other types of radio receivers) that will be linked together via optic fibre cables. The total s ...
... The Square Kilometre Array Telescope (SKA) project will be the world’s biggest Telescope and one of the biggest scientific projects ever. It will be made up of many large antennas spread over 3000Km (and other types of radio receivers) that will be linked together via optic fibre cables. The total s ...
Astronomy 360 - indstate.edu
... Copernican Theory was also accepted by Galileo Galilei (born 15 February 1564– died 8 January ...
... Copernican Theory was also accepted by Galileo Galilei (born 15 February 1564– died 8 January ...
Lecture Two (Powerpoint format)
... In the Northern hemisphere, the stars rise in the East, set in the West, and revolve counter-clockwise around the North celestial pole. In the southern hemisphere the stars rise in the A) East, set in the West, and revolve counter-clockwise around the ...
... In the Northern hemisphere, the stars rise in the East, set in the West, and revolve counter-clockwise around the North celestial pole. In the southern hemisphere the stars rise in the A) East, set in the West, and revolve counter-clockwise around the ...
wk02noQ
... once per 230,000,000 years. How do we know? (motion of other stars in the Milky Way wrt the Sun; careful study of stellar positions over time) ...
... once per 230,000,000 years. How do we know? (motion of other stars in the Milky Way wrt the Sun; careful study of stellar positions over time) ...
conjunction and opposition
... Superior conjunctions are when the planet is on the far side of the Sun from the Earth. Looking across the distance of the majority of an orbit, a planet will look small at times close to conjunction, when the planet is on the far side of the Sun. Inferior conjunctions can only occur with the inferi ...
... Superior conjunctions are when the planet is on the far side of the Sun from the Earth. Looking across the distance of the majority of an orbit, a planet will look small at times close to conjunction, when the planet is on the far side of the Sun. Inferior conjunctions can only occur with the inferi ...
Section 3: Three Periodicities - Wobble, Tilt, and
... hottest time of the year. This "double whammy" of the natural world resulted in both hotter summers and colder winters, combining the effect of aphelion (Earth's greatest distance from the Sun) with the chill of winter, and perihelion with the heat of summer. ...
... hottest time of the year. This "double whammy" of the natural world resulted in both hotter summers and colder winters, combining the effect of aphelion (Earth's greatest distance from the Sun) with the chill of winter, and perihelion with the heat of summer. ...
THE INCREDIBLE ORIGIN OF THE CHEMICAL ELEMENTS
... is used up the outward flow of radiation dies down and can no longer prevent the outer parts of the star from falling in towards the centre. The star shrinks in on itself, but in doing so it heats up further, to the point where helium nuclei can overcome their mutual repulsion arising from their cha ...
... is used up the outward flow of radiation dies down and can no longer prevent the outer parts of the star from falling in towards the centre. The star shrinks in on itself, but in doing so it heats up further, to the point where helium nuclei can overcome their mutual repulsion arising from their cha ...
1 History of Astronomy - Journigan-wiki
... Brahe built a castle on Hven and named it Uraniborg after Urania, the goddess of the sky. He also built an observatory on the island. For over 20 years, Brahe used the island as his base from which to make astronomical observations. In 1597, Tycho Brahe lost the Danish king's support, so he went to ...
... Brahe built a castle on Hven and named it Uraniborg after Urania, the goddess of the sky. He also built an observatory on the island. For over 20 years, Brahe used the island as his base from which to make astronomical observations. In 1597, Tycho Brahe lost the Danish king's support, so he went to ...
Chapter 15 The Formation of Planetary Systems
... 6. Most moons’ orbits are also in the same sense 7. Solar system is highly differentiated 8. Asteroids are very old, and not like either inner or outer planets ...
... 6. Most moons’ orbits are also in the same sense 7. Solar system is highly differentiated 8. Asteroids are very old, and not like either inner or outer planets ...
Chapter 15 The Formation of Planetary Systems
... 6. Most moons’ orbits are also in the same sense 7. Solar system is highly differentiated 8. Asteroids are very old, and not like either inner or outer planets ...
... 6. Most moons’ orbits are also in the same sense 7. Solar system is highly differentiated 8. Asteroids are very old, and not like either inner or outer planets ...
Extraterrestrial life
Extraterrestrial life is life that does not originate from Earth. It is also called alien life, or, if it is a sentient and/or relatively complex individual, an ""extraterrestrial"" or ""alien"" (or, to avoid confusion with the legal sense of ""alien"", a ""space alien""). These as-yet-hypothetical life forms range from simple bacteria-like organisms to beings with civilizations far more advanced than humanity. Although many scientists expect extraterrestrial life to exist, so far no unambiguous evidence for its existence exists.The science of extraterrestrial life is known as exobiology. The science of astrobiology also considers life on Earth as well, and in the broader astronomical context. Meteorites that have fallen to Earth have sometimes been examined for signs of microscopic extraterrestrial life. Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial intelligence, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets. It has also played a major role in works of science fiction. Over the years, science fiction works, especially Hollywood's involvement, has increased the public's interest in the possibility of extraterrestrial life. Some encourage aggressive methods to try to get in contact with life in outer space, whereas others argue that it might be dangerous to actively call attention to Earth.