Chapter 21 notes - Clinton Public Schools
... Section 5: The Expanding Universe: How the universe was formed: Astronomers believe the universe was incredibly hot and dense, exploded in what astronomers called the Big Bang. According to the big bang theory, the universe formed in an instant, billion of years ago, in an enormous explosion. Since ...
... Section 5: The Expanding Universe: How the universe was formed: Astronomers believe the universe was incredibly hot and dense, exploded in what astronomers called the Big Bang. According to the big bang theory, the universe formed in an instant, billion of years ago, in an enormous explosion. Since ...
d = 1 / p
... amount of energy per second (power) emitted by a blackbody per unit of surface area as determined by its temperature. So if we know the total power emitted by a star (its luminosity), and we know its temperature from Wien's law, we can calculate its total surface area – and determine its size. To do ...
... amount of energy per second (power) emitted by a blackbody per unit of surface area as determined by its temperature. So if we know the total power emitted by a star (its luminosity), and we know its temperature from Wien's law, we can calculate its total surface area – and determine its size. To do ...
File
... • About 90% of all stars in the universe are main sequence stars. • The main sequence can be found on a narrow band running from the upper left corner (hot, bright stars) to the lower right corner (cool, dim stars) on the H-R diagram. • The distinguishing characteristic of main sequence stars is tha ...
... • About 90% of all stars in the universe are main sequence stars. • The main sequence can be found on a narrow band running from the upper left corner (hot, bright stars) to the lower right corner (cool, dim stars) on the H-R diagram. • The distinguishing characteristic of main sequence stars is tha ...
Star Groups and Big Bang Power Point
... The Expanding Universe Using Hubble’s observations, astronomers have been able to determine that the universe is expanding. The expanding universe can be thought of as a raisin cake rising in the oven. If you were able to sit on one raisin, you would see all the other raisins moving away from y ...
... The Expanding Universe Using Hubble’s observations, astronomers have been able to determine that the universe is expanding. The expanding universe can be thought of as a raisin cake rising in the oven. If you were able to sit on one raisin, you would see all the other raisins moving away from y ...
d = 1 / p
... intrinsic brightness, or luminosity – the total energy the star emits per second. Imagine building a gigantic shell centered around the star, giving that shell a radius d equal to the distance between the star and Earth. A detector placed on the inside of the shell receives a certain amount of energ ...
... intrinsic brightness, or luminosity – the total energy the star emits per second. Imagine building a gigantic shell centered around the star, giving that shell a radius d equal to the distance between the star and Earth. A detector placed on the inside of the shell receives a certain amount of energ ...
ppt
... How can we test theories of star evolution? • Binaries help, because one can get mass so that theories can be tested • But stars change so slowly, it is impossible to test theories by watching just one star move through phases • Fortunately, there are 1011 stars in our Galaxy, all with a range of ma ...
... How can we test theories of star evolution? • Binaries help, because one can get mass so that theories can be tested • But stars change so slowly, it is impossible to test theories by watching just one star move through phases • Fortunately, there are 1011 stars in our Galaxy, all with a range of ma ...
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... Use Star Walk or your team’s own naked-‐eye observations to check the accuracy of your finding chart. If your chart does not correctly show the position of the planet, explain what went wrong: ...
... Use Star Walk or your team’s own naked-‐eye observations to check the accuracy of your finding chart. If your chart does not correctly show the position of the planet, explain what went wrong: ...
Stars: Their Life and Afterlife
... Superbubbles are large cavities of hot, low-density plasma that are created by the collective effects of a large number of massive stars. We saw earlier in the lecture series that stars tend to form in clusters as a giant molecular cloud contracts. This means that they not only tend to form close to ...
... Superbubbles are large cavities of hot, low-density plasma that are created by the collective effects of a large number of massive stars. We saw earlier in the lecture series that stars tend to form in clusters as a giant molecular cloud contracts. This means that they not only tend to form close to ...
Astronomy Study Guide
... b. The star’s distance from Earth 38. The Hertzsprung-Russell diagram shows the relationship between surface temperature and brightness 39. Look at the Hertzsprung-Russell diagram in Figure 11 on page 289. Write what is measured on each of the two axes of the diagram. a. x-axis (horizontal axis): Su ...
... b. The star’s distance from Earth 38. The Hertzsprung-Russell diagram shows the relationship between surface temperature and brightness 39. Look at the Hertzsprung-Russell diagram in Figure 11 on page 289. Write what is measured on each of the two axes of the diagram. a. x-axis (horizontal axis): Su ...
Constellation Chart Activity
... a) Find 6h of Right Ascension at the bottom of the map. The date written right below it is _________________. That means that if you go outside at 8 PM local time on that date, that line would be YOUR Meridian. b) Find Orion and Gemini along that 6h RA line. On that date at that time, Orion will be ...
... a) Find 6h of Right Ascension at the bottom of the map. The date written right below it is _________________. That means that if you go outside at 8 PM local time on that date, that line would be YOUR Meridian. b) Find Orion and Gemini along that 6h RA line. On that date at that time, Orion will be ...
Why is there a main sequence?
... I. Main-Sequence Stars A. Stellar Models B. Why is there a Main Sequence? C. The Upper End of the Main Sequence D. The Lower End of the Main Sequence E. The Life of a Main-Sequence Star F. The Life Expectancies of Stars II. Post-Main-Sequence Evolution A. Expansion into a Giant ...
... I. Main-Sequence Stars A. Stellar Models B. Why is there a Main Sequence? C. The Upper End of the Main Sequence D. The Lower End of the Main Sequence E. The Life of a Main-Sequence Star F. The Life Expectancies of Stars II. Post-Main-Sequence Evolution A. Expansion into a Giant ...
2009 Assessment Schedule (90764)
... less luminous than the sun, and spectral type of B – F. (The Sun is a main sequence star / other stars are not main sequence stars so are at different stages in their life cycles) (a) ...
... less luminous than the sun, and spectral type of B – F. (The Sun is a main sequence star / other stars are not main sequence stars so are at different stages in their life cycles) (a) ...
Study Guide for 3RD Astronomy Exam
... Identify the types of stars that will experience a corecollapse (Type II) supernova. Identify the composition of the core of a star about to experience a core-collapse (Type II) supernova. Describe two reasons why type II supernova a very useful ...
... Identify the types of stars that will experience a corecollapse (Type II) supernova. Identify the composition of the core of a star about to experience a core-collapse (Type II) supernova. Describe two reasons why type II supernova a very useful ...
Constellations - Sierra Star Gazers
... frequently visible to the unaided eye. Situated 5,460 light years from the Sun, M11 is about 13’ in diameter. At low power, the cluster stars take on an apparent fan shape seemingly radiating from a warm yellow star. While this star seems to be a true member of the cluster, in fact it is not. Serpen ...
... frequently visible to the unaided eye. Situated 5,460 light years from the Sun, M11 is about 13’ in diameter. At low power, the cluster stars take on an apparent fan shape seemingly radiating from a warm yellow star. While this star seems to be a true member of the cluster, in fact it is not. Serpen ...
Life Cycle of Stars
... • Under collapse, protons and electrons combine to form neutrons. • 10 Km across Black Hole (If mass of core > 5 x Solar) • Not even compacted neutrons can support weight of very massive stars. ...
... • Under collapse, protons and electrons combine to form neutrons. • 10 Km across Black Hole (If mass of core > 5 x Solar) • Not even compacted neutrons can support weight of very massive stars. ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.