मराठ% &व( सा+ह-य-&व(: /डस1बर २००९ – जानेवार7 २०१० :ैमा<सक वष? २१ वे अंक Cतसरा
... Can we really compress the sun to such a small sphere? We almost can. Let us first see why the sun shines and why it stays the size it is. It shines because the Hydrogen inside it is being converted to Helium (and the Helium to higher elements). These fusion processes are what produce the heat and l ...
... Can we really compress the sun to such a small sphere? We almost can. Let us first see why the sun shines and why it stays the size it is. It shines because the Hydrogen inside it is being converted to Helium (and the Helium to higher elements). These fusion processes are what produce the heat and l ...
Astronomy Unit Notes
... Star = a hot, glowing sphere of gas that produces energy by fusion (of hydrogen molecules). Some stars produce more energy therefore they are hotter. Nebula = a cloud of dust and gas where stars are born. Here gravity pulls particles together and fusion starts at 10,000,000 oC and a star is born. ...
... Star = a hot, glowing sphere of gas that produces energy by fusion (of hydrogen molecules). Some stars produce more energy therefore they are hotter. Nebula = a cloud of dust and gas where stars are born. Here gravity pulls particles together and fusion starts at 10,000,000 oC and a star is born. ...
Diversity of Life Card Game
... 3. Moon 4. Mars 5. Earth 6. Jupiter 7. Sun 8. Solar System 9. Galaxy 10. Cluster of galaxies Step 2: Offer Hints as Needed: Ask the students to respond to these hints before showing the solution, when offering help. You can give one or more hints as needed. Space Shuttle Hint: The length of the Spac ...
... 3. Moon 4. Mars 5. Earth 6. Jupiter 7. Sun 8. Solar System 9. Galaxy 10. Cluster of galaxies Step 2: Offer Hints as Needed: Ask the students to respond to these hints before showing the solution, when offering help. You can give one or more hints as needed. Space Shuttle Hint: The length of the Spac ...
the incredible shrinking cloud
... You and your friends decide to race marbles in a giant funnel. All of your marbles are the same size but have different weights. You release the marbles at the same time and with the same force. Answer the following questions; 1. Predict the results of the race. ...
... You and your friends decide to race marbles in a giant funnel. All of your marbles are the same size but have different weights. You release the marbles at the same time and with the same force. Answer the following questions; 1. Predict the results of the race. ...
Elemental Abundances
... • Li, Be and B are very scarce, mostly destroyed in the harsh environment of stellar interiors • Li abundance comes from measurements in meteorites; it is still lower in the solar photosphere because of destruction by mixing with hotter layers below. • Abundant in primary cosmic rays as a result of ...
... • Li, Be and B are very scarce, mostly destroyed in the harsh environment of stellar interiors • Li abundance comes from measurements in meteorites; it is still lower in the solar photosphere because of destruction by mixing with hotter layers below. • Abundant in primary cosmic rays as a result of ...
Solutions
... (a) Will the rate at which the Sun converts some of its mass to energy be higher or lower when it is a red giant as compared to now? Why? (b) Do you expect that the pressure near the surface, but inside the Sun, will be higher when the Sun is a red giant than it is now? Why? (c) Do you expect the so ...
... (a) Will the rate at which the Sun converts some of its mass to energy be higher or lower when it is a red giant as compared to now? Why? (b) Do you expect that the pressure near the surface, but inside the Sun, will be higher when the Sun is a red giant than it is now? Why? (c) Do you expect the so ...
Combining Practices with Core Ideas in the NGSS
... the distance to a star the baseline is the diameter of Earth’s orbit around the sun. To show the evidence that the sun and stars are made from the same elements, I could have the students use a diffraction grating to see that the spectrum of a light source is like a fingerprint, and share the ninete ...
... the distance to a star the baseline is the diameter of Earth’s orbit around the sun. To show the evidence that the sun and stars are made from the same elements, I could have the students use a diffraction grating to see that the spectrum of a light source is like a fingerprint, and share the ninete ...
The Formation of the Solar System
... • Angular Momentum and Gravity are clearly understood • Nebula are very real and very common – We can see stars in different phases of development when we observe nebular through a telescope. ...
... • Angular Momentum and Gravity are clearly understood • Nebula are very real and very common – We can see stars in different phases of development when we observe nebular through a telescope. ...
The Solar System
... Solar System, the Jovian planets were not impacted by the high temperatures and pressure from the Sun. These planets are made up of the less dense elements that were pushed out of the inner solar system. ...
... Solar System, the Jovian planets were not impacted by the high temperatures and pressure from the Sun. These planets are made up of the less dense elements that were pushed out of the inner solar system. ...
Stellar Luminosities
... • When we learn how to get distances beyond the limits of parallax and sample many more stars, we will find there are stars that are stars that are 106 times the luminosity of the Sun. • This is an enormous range in energy output from stars. This is an important clue in figuring out how they produce ...
... • When we learn how to get distances beyond the limits of parallax and sample many more stars, we will find there are stars that are stars that are 106 times the luminosity of the Sun. • This is an enormous range in energy output from stars. This is an important clue in figuring out how they produce ...
Chapter 9 The Sun - Otto
... • 3rd nucleus has less mass than sum of two nuclei • Mass converted to energy E = mc2 • Need high temperature to overcome charge repulsion ...
... • 3rd nucleus has less mass than sum of two nuclei • Mass converted to energy E = mc2 • Need high temperature to overcome charge repulsion ...
Problem Set 6 for Astro 320 Read sections 11.2
... use L = 4πR2 σT 4 to find R = L/(4πσT 4 ) = 5.8 × 109 m. Alternatively, one can look at Figure 13.7, check that the L and T agree with point 3, and just use R=3.94 R . Now, the KH timescale is just ∆E/L, where ∆E = P E/2(virial theorem)= (3/10)GM 2 /R = 0.3 ∗ 6.7 × 10−11 ∗ (5 ∗ 2 × 1030 )2 /5.8 × 1 ...
... use L = 4πR2 σT 4 to find R = L/(4πσT 4 ) = 5.8 × 109 m. Alternatively, one can look at Figure 13.7, check that the L and T agree with point 3, and just use R=3.94 R . Now, the KH timescale is just ∆E/L, where ∆E = P E/2(virial theorem)= (3/10)GM 2 /R = 0.3 ∗ 6.7 × 10−11 ∗ (5 ∗ 2 × 1030 )2 /5.8 × 1 ...
Study Guide Our Solar System Student Note: The upcoming test on
... Like the sun’s interior, its atmosphere is composed mainly of hydrogen and helium. The sun’s atmosphere includes the photosphere, the chromosphere and the corona. Each layer has unique properties. The photosphere is the inner layer which you see when you look at the sun. The chromosphere is the midd ...
... Like the sun’s interior, its atmosphere is composed mainly of hydrogen and helium. The sun’s atmosphere includes the photosphere, the chromosphere and the corona. Each layer has unique properties. The photosphere is the inner layer which you see when you look at the sun. The chromosphere is the midd ...
Comets and Asteroids
... Sun but are too small to be considered planets. They are known as minor planets Asteroids range in size from Ceres, which has a diameter of about 1000 km, down to the size of pebbles. Sixteen asteroids have a diameter of 240 km or greater Most, are found in the main belt that exists between the orbi ...
... Sun but are too small to be considered planets. They are known as minor planets Asteroids range in size from Ceres, which has a diameter of about 1000 km, down to the size of pebbles. Sixteen asteroids have a diameter of 240 km or greater Most, are found in the main belt that exists between the orbi ...
Stellar Evolution - Academic Computer Center
... • When a star uses up the Hydrogen in its core it can no longer support itself against gravity. • The core compresses and temperatures begin to rise. • Temperatures may get high enough outside the core to begin The life cycle of a star like the Sun Hydrogen fusion there instead. • The pressure from ...
... • When a star uses up the Hydrogen in its core it can no longer support itself against gravity. • The core compresses and temperatures begin to rise. • Temperatures may get high enough outside the core to begin The life cycle of a star like the Sun Hydrogen fusion there instead. • The pressure from ...
Part 2: Solar System Formation
... gravitational pull and collect gas around them. – Ice is ten times more abundant than silicates and iron compounds, therefore there is more planet building material in the outer solar system. • Planets in the inner nebula can not grow enough to collect much gas. • Eventually most but not all of the ...
... gravitational pull and collect gas around them. – Ice is ten times more abundant than silicates and iron compounds, therefore there is more planet building material in the outer solar system. • Planets in the inner nebula can not grow enough to collect much gas. • Eventually most but not all of the ...
Life Cycle of a Star
... • As the sun runs out of hydrogen the outer layers of the sun will become cooler • They will also expand massively. • The Earth (along with Mercury, Venus and Mars) will be swallowed up. ...
... • As the sun runs out of hydrogen the outer layers of the sun will become cooler • They will also expand massively. • The Earth (along with Mercury, Venus and Mars) will be swallowed up. ...