LIFEPAC® 7th Grade Science Unit 3 Worktext - HomeSchool
... Milky Way (mil’ kē wā). A broad band of faint light that stretches across the sky at night. Our solar system is part of the Milky Way Galaxy. The Milky Way is made up of billions of stars. myth (mith). Legend or story that usually attempts to account for something in nature. mythology (mi thol’ u jē ...
... Milky Way (mil’ kē wā). A broad band of faint light that stretches across the sky at night. Our solar system is part of the Milky Way Galaxy. The Milky Way is made up of billions of stars. myth (mith). Legend or story that usually attempts to account for something in nature. mythology (mi thol’ u jē ...
The Properties of Stars
... Finding the mass of the stars in a binary star system requires observations that give (a) the sum of the masses and (b) the ratio of the masses. This can easily be done if the system is a well-observed visual binary. In that case, we can plot the orbit and measure a and P. r1 and r2 can be determine ...
... Finding the mass of the stars in a binary star system requires observations that give (a) the sum of the masses and (b) the ratio of the masses. This can easily be done if the system is a well-observed visual binary. In that case, we can plot the orbit and measure a and P. r1 and r2 can be determine ...
Lecture - Ann Arbor Earth Science
... Our Universe In 1995, the Hubble Space Telescope pointed at a blank area of the sky near Ursa Major for 10 days. It produced this picture. Almost all the objects in this photograph are galaxies that are located between 5 and 10 billion light years away from Earth. Younger galaxies are blue while ol ...
... Our Universe In 1995, the Hubble Space Telescope pointed at a blank area of the sky near Ursa Major for 10 days. It produced this picture. Almost all the objects in this photograph are galaxies that are located between 5 and 10 billion light years away from Earth. Younger galaxies are blue while ol ...
HW #4 (due March 27)
... When astronomers look through their telescopes, they see billions of stars. What can they learn from their observations? In class, we’ve learned that the shape of the spectrum (especially, the wavelength at which it reaches its maximum intensity) can be used to determine a star’s temperature. In add ...
... When astronomers look through their telescopes, they see billions of stars. What can they learn from their observations? In class, we’ve learned that the shape of the spectrum (especially, the wavelength at which it reaches its maximum intensity) can be used to determine a star’s temperature. In add ...
TYPES OF STARS
... When astronomers look through their telescopes, they see billions of stars. What can they learn from their observations? In class, we’ve learned that the shape of the spectrum (especially, the wavelength at which it reaches its maximum intensity) can be used to determine a star’s temperature. In add ...
... When astronomers look through their telescopes, they see billions of stars. What can they learn from their observations? In class, we’ve learned that the shape of the spectrum (especially, the wavelength at which it reaches its maximum intensity) can be used to determine a star’s temperature. In add ...
PH607 – Galaxies 2
... formation event a few million years ago. The existence of these relatively young (though evolved) stars there was of a surprise to experts, who would have expected the tidal forces from the central black-hole to prevent their formation. They are much too young to have migrated far, but it seems even ...
... formation event a few million years ago. The existence of these relatively young (though evolved) stars there was of a surprise to experts, who would have expected the tidal forces from the central black-hole to prevent their formation. They are much too young to have migrated far, but it seems even ...
Conceptual Physics
... 3. In a random sample of stars in the Sun’s neighborhood, you would expect about 90% of them: a. To be red giants b. To be white dwarfs c. To be main sequence stars d. To have just been born e. To be older than the Sun 4. A star near the top of the main sequence has a mass about: a. Twice the Sun’s ...
... 3. In a random sample of stars in the Sun’s neighborhood, you would expect about 90% of them: a. To be red giants b. To be white dwarfs c. To be main sequence stars d. To have just been born e. To be older than the Sun 4. A star near the top of the main sequence has a mass about: a. Twice the Sun’s ...
Lecture 2+3 - University of Texas Astronomy Home Page
... core and layers of high-mass (M> 8 solar mass) star. (Low mass stars may produce some C, but no significant N O). When the high mass star dies - its core becomes a neutron star or black hole, - its central and outer layers of gas containing H, He, C, and N, O, Sulfur, Silicon, Iron are blown out by ...
... core and layers of high-mass (M> 8 solar mass) star. (Low mass stars may produce some C, but no significant N O). When the high mass star dies - its core becomes a neutron star or black hole, - its central and outer layers of gas containing H, He, C, and N, O, Sulfur, Silicon, Iron are blown out by ...
Eagle Nebula - Amazing Space
... that make stars, including our Sun, shine. Photoevaporation in the Eagle Nebula has cut newly forming stars off from the cloud feeding them. While some of the EGGs are large enough to eventually become stars, others may never make it. ...
... that make stars, including our Sun, shine. Photoevaporation in the Eagle Nebula has cut newly forming stars off from the cloud feeding them. While some of the EGGs are large enough to eventually become stars, others may never make it. ...
Life Cycle of a Star
... Heat and pressure begin to build until __________ __________ begins to take place. Inside the core, _____________ atoms smash together and are fused into heavier _____________ atoms. This process generates an enormous amount of ______________ and the star ignites becoming a _________ ______________ ...
... Heat and pressure begin to build until __________ __________ begins to take place. Inside the core, _____________ atoms smash together and are fused into heavier _____________ atoms. This process generates an enormous amount of ______________ and the star ignites becoming a _________ ______________ ...
Extraterrestrial Life
... Np – number of planets around stars like Sun Fs – fraction of stars with properties for life to develop • Water is probably essential as a solvent. So, planet must have exact temperature (distance from the star) to have water (liquid state). Between 273 K and 373 K. • Pressure must be right too (atm ...
... Np – number of planets around stars like Sun Fs – fraction of stars with properties for life to develop • Water is probably essential as a solvent. So, planet must have exact temperature (distance from the star) to have water (liquid state). Between 273 K and 373 K. • Pressure must be right too (atm ...
The Stars
... • Stellar properties are determined solely by their mass, composition, age, and rotation rate. • The properties of main sequence stars are largely determined by their masses. • Single stars are spherical, unless distorted by rotation ...
... • Stellar properties are determined solely by their mass, composition, age, and rotation rate. • The properties of main sequence stars are largely determined by their masses. • Single stars are spherical, unless distorted by rotation ...
Energy Transport
... Factors in Nuclear Fusion • Hydrogen atoms are ionized (bare nuclei) • Nuclei repel each other (Coulomb barrier) • High enough temperature means a small percentage will have a high enough energy to get close enough for strong interaction to occur (Maxwell distribution of velocities) • Sufficiently ...
... Factors in Nuclear Fusion • Hydrogen atoms are ionized (bare nuclei) • Nuclei repel each other (Coulomb barrier) • High enough temperature means a small percentage will have a high enough energy to get close enough for strong interaction to occur (Maxwell distribution of velocities) • Sufficiently ...
Test #1
... 1) Looking down for the north pole in what direction does the Earth rotate? a) clockwise, b) counter clockwise, c) it doesn’t, d) vertical 2) Which planet orbits fastest around the Sun? a) Mercury, b) Venus, c) Earth, d) Jupiter 3) If the Earth were inclined more on its axis than it currently is, wh ...
... 1) Looking down for the north pole in what direction does the Earth rotate? a) clockwise, b) counter clockwise, c) it doesn’t, d) vertical 2) Which planet orbits fastest around the Sun? a) Mercury, b) Venus, c) Earth, d) Jupiter 3) If the Earth were inclined more on its axis than it currently is, wh ...
8hrdiagram1s
... Luminosity classes are used to specify where a star falls on the HR Diagram In order of increasing brightness and size: ...
... Luminosity classes are used to specify where a star falls on the HR Diagram In order of increasing brightness and size: ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.