astronomy practice Answers - hhs-snc1d
... c) fusing helium atoms at its core. d) fusing hydrogen atoms at its surface. ...
... c) fusing helium atoms at its core. d) fusing hydrogen atoms at its surface. ...
Absolute magnitude
... to jump to a higher energy level. ▪ The photon’s energy must be equal to the energy difference between the two levels. ...
... to jump to a higher energy level. ▪ The photon’s energy must be equal to the energy difference between the two levels. ...
The Death of Massive Stars
... • The solar wind carries away about 10–14 of the Sun’s mass each year. Over the course of 10 billion years, the Sun will lose only 0.01% of its mass this way. • In red giant stars, it is thought that core instabilities and pulsations are responsible for the large mass loss. • A typical red giant los ...
... • The solar wind carries away about 10–14 of the Sun’s mass each year. Over the course of 10 billion years, the Sun will lose only 0.01% of its mass this way. • In red giant stars, it is thought that core instabilities and pulsations are responsible for the large mass loss. • A typical red giant los ...
Lecture 15
... Why do protostars rotate rather fast and end up surrounded by disks of material? A. The galaxy is rotating, so all the stars that form are rotating as well. B. If a cloud spins even a little bit, the spin increases as it contracts. C. The conservation of angular momentum causes this to occur. D. Al ...
... Why do protostars rotate rather fast and end up surrounded by disks of material? A. The galaxy is rotating, so all the stars that form are rotating as well. B. If a cloud spins even a little bit, the spin increases as it contracts. C. The conservation of angular momentum causes this to occur. D. Al ...
Chapter14(4-7-11)
... Interstellar cloud of gas and dust is compressed and collapses to form stars After leaving the main sequence red giants eject their outer layers back to the interstellar medium Supernovae explode and eject their outer layers back to the interstellar medium Supernova explosions and other events can c ...
... Interstellar cloud of gas and dust is compressed and collapses to form stars After leaving the main sequence red giants eject their outer layers back to the interstellar medium Supernovae explode and eject their outer layers back to the interstellar medium Supernova explosions and other events can c ...
Planetary Configurations
... can uphold itself against gravity. • For Sun (a big ball of gas), gas pressure does the trick. ...
... can uphold itself against gravity. • For Sun (a big ball of gas), gas pressure does the trick. ...
HW7-3
... (260)RQ 2: (a) Why is there a lower end to the main sequence? (b) Why is there an upper end? (a) Stars less than 0.08M☉ (8% of M☉) are not hot enough in their cores to run fusion. These are brown dwarfs. (b) Very massive stars have so much fusion that the outward forces overwhelm gravity and they ar ...
... (260)RQ 2: (a) Why is there a lower end to the main sequence? (b) Why is there an upper end? (a) Stars less than 0.08M☉ (8% of M☉) are not hot enough in their cores to run fusion. These are brown dwarfs. (b) Very massive stars have so much fusion that the outward forces overwhelm gravity and they ar ...
Stars Unit
... BINARY STARS We can find the mass of these stars by the size their orbits, also the small star blocks light from the big star, that tells us their size as well. ...
... BINARY STARS We can find the mass of these stars by the size their orbits, also the small star blocks light from the big star, that tells us their size as well. ...
Chapter 30 Notes
... • nebula a large cloud of gas and dust in interstellar space; a region in space where stars are born. • A star beings in a nebula. When the nebula is compressed, some of the particles move close to each other and are pulled together by gravity. • As described in Newton’s law of universal gravitation ...
... • nebula a large cloud of gas and dust in interstellar space; a region in space where stars are born. • A star beings in a nebula. When the nebula is compressed, some of the particles move close to each other and are pulled together by gravity. • As described in Newton’s law of universal gravitation ...
Chapter 11: Stars
... • Astronomers measure the surface temperature because the interior temperature can only be inferred from models. • Surface T is easier to measure than its luminosity because it does not depend on distance. ...
... • Astronomers measure the surface temperature because the interior temperature can only be inferred from models. • Surface T is easier to measure than its luminosity because it does not depend on distance. ...
Chapter 7 Formation of Stars
... • Observation of many hot O and B spectral class stars in and near nebulae is a rather strong indicator that stars are being born there. • These stars are so luminous that they must consume their nuclear fuel at a prodigious rate. • Their time on the main sequence is probably only a million years or ...
... • Observation of many hot O and B spectral class stars in and near nebulae is a rather strong indicator that stars are being born there. • These stars are so luminous that they must consume their nuclear fuel at a prodigious rate. • Their time on the main sequence is probably only a million years or ...
Chapter 8 Formation of Stars
... • Observation of many hot O and B spectral class stars in and near nebulae is a rather strong indicator that stars are being born there. • These stars are so luminous that they must consume their nuclear fuel at a prodigious rate. • Their time on the main sequence is probably only a million years or ...
... • Observation of many hot O and B spectral class stars in and near nebulae is a rather strong indicator that stars are being born there. • These stars are so luminous that they must consume their nuclear fuel at a prodigious rate. • Their time on the main sequence is probably only a million years or ...
Review (PPT) - Uplift Summit Intl
... ▪ For the star much bigger than the Sun when in the red giant phase, the core is so large that the resulting high temperature causes the fusion of nuclei to create elements heavier than carbon. ▪ The giant phase ends with the star having layers of elements with proton numbers that decrease from the ...
... ▪ For the star much bigger than the Sun when in the red giant phase, the core is so large that the resulting high temperature causes the fusion of nuclei to create elements heavier than carbon. ▪ The giant phase ends with the star having layers of elements with proton numbers that decrease from the ...
High School Science Proficiency Review #2 Earth Science
... A. Having the telescope above the atmosphere puts it closer to the object for better magnification. B. Having the telescope above the atmosphere puts it closer to the object for better sound detection. 12. What can we conclude from the observation that nearly C. Some types of electromagnet ...
... A. Having the telescope above the atmosphere puts it closer to the object for better magnification. B. Having the telescope above the atmosphere puts it closer to the object for better sound detection. 12. What can we conclude from the observation that nearly C. Some types of electromagnet ...
The abundance of 26Al-rich planetary systems in the Galaxy
... The Orion Nebula has often been presented as the paradigm of such a situation (Hester et al. 2004). However, the disks that are observed now around the ≈1 Myr central star (θ1 Ori C) will be gone when that star explodes as a supernova, either because they will have been photo-evaporated (Bally et al ...
... The Orion Nebula has often been presented as the paradigm of such a situation (Hester et al. 2004). However, the disks that are observed now around the ≈1 Myr central star (θ1 Ori C) will be gone when that star explodes as a supernova, either because they will have been photo-evaporated (Bally et al ...
five minute episode script
... DISTINCTIVE BELT OF THREE STARS. IF YOU LOOK A LITTLE CLOSER YOU'LL SEE STARS OF DIFFERENT BRIGHTNESS AND COLOR. DEAN: STAR COLOR IS AN INDICATION OF ITS TEMPERATURE - BLUE STARS BEING THE HOTTEST AND RED STARS BEING THE COLDEST. YOU CAN REALLY SEE THE COLORS OF THE BRIGHTEST STARS LIKE THOSE IN ORI ...
... DISTINCTIVE BELT OF THREE STARS. IF YOU LOOK A LITTLE CLOSER YOU'LL SEE STARS OF DIFFERENT BRIGHTNESS AND COLOR. DEAN: STAR COLOR IS AN INDICATION OF ITS TEMPERATURE - BLUE STARS BEING THE HOTTEST AND RED STARS BEING THE COLDEST. YOU CAN REALLY SEE THE COLORS OF THE BRIGHTEST STARS LIKE THOSE IN ORI ...
Binocular Universe: Bikini Bottom
... circled by a close-set pair of stars. The more massive of those two is a blue star, but little is known about its companion apart from it taking only 8.7 days to orbit. The two are separated from each other by only one-third Mercury's distance from the Sun. Our last stop within Capricornus is the c ...
... circled by a close-set pair of stars. The more massive of those two is a blue star, but little is known about its companion apart from it taking only 8.7 days to orbit. The two are separated from each other by only one-third Mercury's distance from the Sun. Our last stop within Capricornus is the c ...
HR-diagram - Bakersfield College
... Measuring the Brightness of a Star “Stellar Brightness” Magnitude – the brightness of a star ...
... Measuring the Brightness of a Star “Stellar Brightness” Magnitude – the brightness of a star ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.