Science Physics Core science questions and answers- Topic 1- The solar system- 1. What is a geocentric model? It is a model with the earth at the centre. 2. Describe two differences between ptolemy’s and Copernicus’s models- What is at the centre of the model and the way in which the planets followed smaller circles in their orbits in ptolemy’s model.
Discovery of 51 Pegasi B In October 1995, a discovery was made by Michael Mayor and Didier Queloz that rocked the foundations of the professional planet seeking world. This discovery was that of a planet, 51 Pegasi B. My paper will focus on the path that two Geneva based astronomers took in discovering the existence of 51 Pegasi B. As the first men to find a planet that rotated so close to a star, they challenged the existing notions that planets could not exist in such close proximities to planets. Their discovery prompted astronomers around the world to look in places where planets were not found to exist and allowed us to further examine how a planet can exist at such extreme temperatures.
Astronomy 10 Chapter 11 1. Both used to be normal stars but the white dwarf ran out of hydrogen, they are both subjected to gravitational theories. A Neutron star is a fluid of neutrons, as hot at its surface as the inside of the sun and has a greater magnetic field. 3. Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle.
Astronomy is a natural science which is the study of celestial objects, the physics, chemistry, and evolution of such objects, and phenomena that originate outside the atmosphere of Earth, including supernovae explosions, gamma ray bursts, and cosmic microwave background radiation. cosmology, is concerned with studying the universe as a whole. Astronomy is one of the oldest sciences. The early civilizations in recorded history, such as the Babylonians, Greeks, Indians, Egyptians, Nubians, Iranians, Chinese, and Maya performed methodical observations of the night sky. However, the invention of the telescope was required before astronomy was able to develop into a modern science.
Studying different stages of stars in detail can be done by using different telescopes that are used for specific purposes. This paper will touch bases on how the telescope changed our understanding of the universe and our place in it, describe the main designs of telescopes and discuss their strengths and weaknesses, define the best places to build ground-based telescopes and why astronomers choose those places, contrast the strengths and weaknesses between building telescopes on the Earth, in orbit, or even on the Moon, describe how different frequencies of light tell more about the birth, life, and death in the nature and properties of the Sun, the stars, and the universe, and describe how telescopes manage to operate in wavelengths of light that stretch from radio waves to gamma rays. Telescopes have expanded our vision to the universe. Initial telescopes showed that Earth was not the midpoint of the universe, as was formerly believed. Telescopes also indicated mountains and craters on the moon.
There is much evidence behind the Big Bang theory, but it continues to face various challenges. Ultimately, this theory was proved by Arno Penzias and Robert Wilson in 1964. The radio telescope they built detected the background energy which Robert Dicke believed was released by the Big Bang. This theory is also supported by the evidence that the universe has a history – which is not implied by the Steady State hypothesis. Due to today’s advanced technology, “the most powerful modern telescopes can detect objects billions of light-years from Earth”.
Question 2 Correct Mark 10.00 out of 10.00 Flag question Question text Sizes of Astronomical Objects — Rank the following objects in size from Largest to Smallest. i.e. in the sequence Largest, 2nd Largest, 3rd Largest, 4th Largest, 5th Largest, 6th Largest, 7th Largest, Smallest. the Milky Way galaxy | Answer 1 | the Sun | Answer 2 | our Solar system | Answer 3 | the local supercluster | Answer 4 | Jupiter | Answer 5 | the universe | Answer 6 | Earth | Answer 7 | Neptune | Answer 8 | Feedback You have correctly selected 8. Correct Marks for this submission: 10.00/10.00.
Depending on the current temperature on the stove the only way that you would be able to make the stove burn hotter would be to raise the amount of voltage. This means that the voltage would have to be multiplied to make the stove have a larger resistance thus making the heat higher. 7. The Hubble Space Telescope can see stars and galaxies where brightness is 1/50 of the faintest objects now observable using ground-based telescopes. Use the fact that the brightness of a point source, such as a star, varies inversely as the square of its distance from an observer to show that the space telescope can see about seven times farther than a ground-based telescope.
1 AU b. 149,600,000 km c. 8.3 light-minutes d. all of the above 5. Distances between stars are usually measured in a. light-minutes b. astronomical units c. light-days d. light-years 6. Einstein developed an equation that changed ideas about the sun’s energy source by describing the relationship between a. mass and energy b. gravity
The theory of Black Holes and its process is one of the most unique studies of the universe, in that with each discovery made, we un-lock closed doors to knowledge of how the universe was made. In 1798 a French Mathematician Pierre Simon de Laplace came up with the first theory of a Black Hole. He agreed with Newton, that when enough mass is added to a star like the sun, the gravitational pull would become so great that the escape velocity would equal the speed of light. Therefore, the star would blink out and become an invisible star. More than a century later, Einstein, came up with the theory of relativity.