final review sheet
... 1) A star which appears blue is hotter than a red star because of the Doppler shift. 2) For two stars in a binary orbit, the center of mass will be closer to the more massive one. 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a fa ...
... 1) A star which appears blue is hotter than a red star because of the Doppler shift. 2) For two stars in a binary orbit, the center of mass will be closer to the more massive one. 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a fa ...
Chapter 17 Science Class 8
... Distance from stars is measured in Light Years. The stars appear to move from East to West, just like the Sun, that appears to rise in the East and set in the West. The Pole Star does not seem to move because it is near the angle of Earth's axis. Therefore, it is always seen the the North, near the ...
... Distance from stars is measured in Light Years. The stars appear to move from East to West, just like the Sun, that appears to rise in the East and set in the West. The Pole Star does not seem to move because it is near the angle of Earth's axis. Therefore, it is always seen the the North, near the ...
Society News - Bristol Astronomical Society
... Coma Berenices, M53, M64, M85, M88, M91, M98, M99 and M100. All these objects are galaxies with the exception of M53, which is a globular cluster. In the west the winter constellations of Orion and Taurus are disappearing below the western horizon, only Gemini remains above the horizon beyond midnig ...
... Coma Berenices, M53, M64, M85, M88, M91, M98, M99 and M100. All these objects are galaxies with the exception of M53, which is a globular cluster. In the west the winter constellations of Orion and Taurus are disappearing below the western horizon, only Gemini remains above the horizon beyond midnig ...
Schedule for Spring 2013 SCI 103 Introductory Astronomy
... Full HR diagram with main sequence masses Sample Problems ...
... Full HR diagram with main sequence masses Sample Problems ...
Universe and Solar System
... When they enter Earth’s atmosphere, they burn, producing a tail (Shooting ...
... When they enter Earth’s atmosphere, they burn, producing a tail (Shooting ...
Stellar Evolution
... luminosity, but hotter tends to increase luminosity. The position of the newly forming star on the H-R diagram will move to the left as it heats up but wander up and down somewhat as its size shrinks. This process takes about 50 million years for a star like the sun, but may take a much shorter time ...
... luminosity, but hotter tends to increase luminosity. The position of the newly forming star on the H-R diagram will move to the left as it heats up but wander up and down somewhat as its size shrinks. This process takes about 50 million years for a star like the sun, but may take a much shorter time ...
Stellar Evolution - Hays High School
... – More massive stars can completely form in a few hundred thousand years ...
... – More massive stars can completely form in a few hundred thousand years ...
blue_giant
... a blue giant is a star with a spectral type of O or B (thus being noticeably blue in appears) ...
... a blue giant is a star with a spectral type of O or B (thus being noticeably blue in appears) ...
Evolution of Stars and Galaxies
... Patterns of stars: Constellations Ancient cultures used mythology or everyday items to name constellations. Constellations: Patterns of stars in the night sky ...
... Patterns of stars: Constellations Ancient cultures used mythology or everyday items to name constellations. Constellations: Patterns of stars in the night sky ...
The star and the trees prostrate
... electromagnetic radiation, including photons, the particles of light. This radiation exerts an outward pressure that exactly balances the inward pull of gravity caused by the star's mass. As the nuclear fuel is exhausted, the outward forces of radiation diminish, allowing the gravitation to compress ...
... electromagnetic radiation, including photons, the particles of light. This radiation exerts an outward pressure that exactly balances the inward pull of gravity caused by the star's mass. As the nuclear fuel is exhausted, the outward forces of radiation diminish, allowing the gravitation to compress ...
Unit 1
... • a. in a circle with the Sun at the center • b. in an elliptical orbit, with the Sun at the center of the ellipse • c. in an elliptical orbit, with the Earth at the center of the ellipse • d. in an elliptical orbit, with the Sun at one focus ...
... • a. in a circle with the Sun at the center • b. in an elliptical orbit, with the Sun at the center of the ellipse • c. in an elliptical orbit, with the Earth at the center of the ellipse • d. in an elliptical orbit, with the Sun at one focus ...
Page 1 of 4 Name PSCI 1055 Test #4 (Form B) Spring 2008 Buckley
... 6. (10 points) An old manuscript is found and carbon-14 dating is used to estimate its age. Carbon-14 decays to N-14 with a half-life of 5730 years. A measurement of the abundance of these two nuclides indicates there are now 4 parts of carbon14 to 12 parts of nitrogen-14. a. How many parts of carb ...
... 6. (10 points) An old manuscript is found and carbon-14 dating is used to estimate its age. Carbon-14 decays to N-14 with a half-life of 5730 years. A measurement of the abundance of these two nuclides indicates there are now 4 parts of carbon14 to 12 parts of nitrogen-14. a. How many parts of carb ...
The Night Sky
... The biggest problem in navigating using the stars was in determining one’s longitude. Explain why this is so difficult? ...
... The biggest problem in navigating using the stars was in determining one’s longitude. Explain why this is so difficult? ...
The Hertzsprung-Russell Diagram
... Most stars lie in the main sequence because if a star is hotter it is brighter. Thus you would expect stars of the same size but different temperatures to form a diagonal line since “hotter means brighter” That Main-Sequence is steeper than a ‘same-size diagonal” shows that larger mass ‘normal’ star ...
... Most stars lie in the main sequence because if a star is hotter it is brighter. Thus you would expect stars of the same size but different temperatures to form a diagonal line since “hotter means brighter” That Main-Sequence is steeper than a ‘same-size diagonal” shows that larger mass ‘normal’ star ...
1) The following questions refer to the HR diagram
... A) it amplifies the contrast with red giants. B) they are both very hot and very small. C) they are supported by electron degeneracy pressure. D) they are the end-products of small, low-mass stars. E) they are the opposite of black holes. 22) What happens to the surface temperature and luminosity wh ...
... A) it amplifies the contrast with red giants. B) they are both very hot and very small. C) they are supported by electron degeneracy pressure. D) they are the end-products of small, low-mass stars. E) they are the opposite of black holes. 22) What happens to the surface temperature and luminosity wh ...
Astronomy Fall 2013 Final Exam History of Astronomy Know: speed
... Absolute is the true actual brightness of the star. Apparent is how bright the star appears to us from earth in our night sky. 4. What is a star chart and how is it used? Shows the constellations in the night sky; it rotates for the time/month of year. Used to find constellations in the night sky. 5 ...
... Absolute is the true actual brightness of the star. Apparent is how bright the star appears to us from earth in our night sky. 4. What is a star chart and how is it used? Shows the constellations in the night sky; it rotates for the time/month of year. Used to find constellations in the night sky. 5 ...
Earth Science, 10th edition Chapter 23: Beyond Our Solar System I
... Earth Science, 10th edition Chapter 23: Beyond Our Solar System I. Properties of stars A. Distance 1. Measuring a star's distance can be very difficult 2. Stellar parallax a. Used for measuring distance to a star b. Apparent shift in a star's position due to the orbital motion of Earth c. Measured a ...
... Earth Science, 10th edition Chapter 23: Beyond Our Solar System I. Properties of stars A. Distance 1. Measuring a star's distance can be very difficult 2. Stellar parallax a. Used for measuring distance to a star b. Apparent shift in a star's position due to the orbital motion of Earth c. Measured a ...
Our Place in Space
... the biggest or the brightest star in our galaxy, but it is the star closest to Earth. Group 1: It is the largest body in our Solar System: in fact, it contains 99.8 percent of the Solar System’s mass. Group 2: Like other stars, the Sun is made up of hot hydrogen and helium gases. The temperature in ...
... the biggest or the brightest star in our galaxy, but it is the star closest to Earth. Group 1: It is the largest body in our Solar System: in fact, it contains 99.8 percent of the Solar System’s mass. Group 2: Like other stars, the Sun is made up of hot hydrogen and helium gases. The temperature in ...
PHYS 175 Fall 2014 Final Recitation Ch. 16 The Sun
... Photons released in the core (where fusion takes place) collide almost instantaneously with other core constituents. This energy gradually flows outward, until the density of the sun decreases sufficiently to allow for radiative diffusion of the energy. Again, the photons still undergo many collisio ...
... Photons released in the core (where fusion takes place) collide almost instantaneously with other core constituents. This energy gradually flows outward, until the density of the sun decreases sufficiently to allow for radiative diffusion of the energy. Again, the photons still undergo many collisio ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.