Science introduction to the life cycle of stars free. Until the last half of the nineteenth century, astronomy was principally concerned with the accurate description of the movements of planets and stars. Prior to igniting fusion and becoming a main sequence star, a contracting protostar will reach hydrostatic equilibrium at around 3,500 c. Please type this up, print it out and bring it to class on. Stars evolve over billions of years, but new stars are constantly being born, so there are always stars of all ages. Worldwide telescope is a free program developed by microsoft research. Worldwide telescope ambassadors program life cycle of a. I can use it to answer a number of specific questions. The relationship between a stars mass and its life span is the greater the mass of the star, the shorter the life span. Average star when a star is burning brightest and appears. A star remains on the main sequence as long as it can fuse hydrogen into helium in its core. Once this state of equilibrium is lost, the star enters the next stage of its life.
Your first task is to figure out and record the correct sequence of pictures from youngest to oldest. Depending on the mass of the star, its lifetime can range from a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of the universe. Video using computer simulation to explain life cycle of a star. Stars spend a majority of their life cycle in this sequence. These materials were developed at harvard university by the wwt ambassadors program. A nebula is an interstellar cloud of dust and plasma. The life cycle of a star a gas cloud, if big enough, starts to shrink. Please click on the document you would like to download. A typical star, like our sun, is stable for a very long time. It is now a red giant, extending out as far as the orbit of mercury. Stellar life cycle definition of stellar life cycle by.
Apr 15, 20 most of the gas cloud gets attracted by gravity and forms a stellar envelope around the core which helps in convecting the heat from the core to the surface of the star. Fourth, and most important, write a paragraph or two that describes the sequence of stellar formation, life cycle, and death. Stellar nebula creationbirth of a star by gases being pulled together. Eventually, enough gas and dust has been collected into a giant ball.
Before life as a star nebula a nebula is a cloud of interstellar dust, hydrogen and helium gas, and plasma. Despite its cooler temperature, its luminosity increases enormously due to its large size. Life cycle after a star is born from a stellar nebula it can take one of two paths depending on its mass, these being an average star or massive star. This section will describe those changes, focusing on the life cycle of the sun. Developments in electromagnetic theories of light along with the articulation of quantum and relativity theories at the start of the twentieth century, however, allowed astronomers to probe the inner workings of the stars. Recognize that stars follow a similar pattern of evolution that is predictable.
Halfway between its creation and its end as a planetary nebula. Stellar evolution is the process by which a star changes over the course of time. At the central core of the star, swirling atoms of hydrogen gas collide with one another and merge to form helium. However, if the mass is too low small mass then the star will never reach the main sequence phase. Millions of people use xmind to clarify thinking, manage complex information, brainstorming, get work organized, remote and work from home wfh. The scientific model of a stellar life cycle is very solid, explaining many observations and successfully predicting the properties of new stars and star clusters that are discovered.
Html, pdf and powerpoint ppt versions educators can request as many classroom sets of the stellar life cycle cards as necessary. This is a great activity to do with early childhood students. Kinesthetic life cycle of stars fairmont state university. Life cycle of a star student led station lab distance learning. In pdf format most of the images in this web paper can be enlarged for greater detail. Begin by asking students if all stars are the same. View test prep 18 stellar life cycle part one outline from math 231 at university of illinois, urbana champaign. Dynamical evolution star clusters are the ideal astrophysical objects to study the stellar dynamics and evolution. Note where this web site is missing images and locate some and put in your description, along with the web address. Investigating the stellar systems lifetime and the evolution of their mass function using nbody simulation masters thesis zeinab khorrami supervisor. There are many forks in the road in the life of a star. Investigating the stellar systems lifetime and the. State that the class will do an activity that illustrates how all of these differences are related.
Star life cycles online student instructions page overview your task is to analyze characteristics that indicate human life cycles and then apply these observational principles to various nasa pictures of stars to synthesize patterns of stellar life cycles. It also explains how many objects and concepts are related, and how some astronomical events cause others. Millions of people use xmind to clarify thinking, manage complex information, brainstorming, get. These giant gas clouds in space are mostly hydrogen gas. Make a list of things that might vary between stars.
View astronomical imagery to learn about different stages of a stars life cycle. In order to understand how a star could collapse into a black hole, it is first important to understand the life cycle of a star. The story of stellar evolution is powerful and dynamic. Army retired, a man in the twilight of his life, retired from the. For teachers who present the topics of hertzsprungrussell hr diagrams andor light curves in the classroom, this image set includes images of stages of stellar evolution, light curves and hr diagrams. Life cycle of a star sequencing flow map by completely. The mass of a star determines a great deal about its temperature and life span. Sociological perspectives, culture, deviance and social control, age and society major characters. Most of the gas cloud gets attracted by gravity and forms a stellar envelope around the core which helps in convecting the heat from the core to the surface of the star. The burning of hydrogen stops the gas cloud from shrinking. The sun the sun is a great ball of gas held together by equal forces.
View and download via nasa eclips website this page also includes additional related links, information, and lesson plans. Units of chapter 12 leaving the main sequence evolution of a sunlike star the death of a lowmass star evolution of stars more massive than the sun supernova explosions observing stellar evolution in star clusters the cycle of stellar evolution. Many of the stellar types identified are really similar stars at different points in their evolution. Finally, students may need their earth science reference tables esrt for parts of the lesson a document used widely in the new york state earth science regents course. For more specific information concerning the sequencing or. A few grains of dust collect a few more, then a few more, then more still.
Stellar life cycle until the last half of the nineteenth century, astronomy was principally concerned with the accurate description of the movements of planets and stars. Socialization and the life course secondary applications. Stellar life cycle synonyms, stellar life cycle pronunciation, stellar life cycle translation, english dictionary definition of stellar life cycle. Nov 20, 2014 stellar evolution is the theory of the life cycle of stars. Abstract in this thesis we study several aspects of dynamical evolution of stellar clusters. Life cycle of a star lab save yourself a ton of time and allow students to use this station lab to explore the life cycle of a star. Average stars have a longer life cycle as they burn their fuel slower than more massive stars knight, 1997. Stellar equilibrium is the balance between outward pressure due to energy released in fusion and inward pressure due to gravity. When that ball becomes dense enough to fuse hydrogen, a new star is. Jan 21, 20 video using computer simulation to explain life cycle of a star. The slightest peturbation in a nebula likely the shockwave from a nearby supernova may cause the gas in a nebula to begin collapsing and condensing into a tight ball. Additionally, if you would like all of the resources together in a pdf document, that can be accessed as a complete resource here. Scientists observe many different stars at various stages, starting with the earliest condensations from clouds of nebular gas and dust. The first file is a straight forward powerpoint that explains the different stages.
Once enough gas has been collected, the gravitational force becomes so strong that hydrogen atoms fuse into helium through nuclear. Star life cycle worksheet draw a line between the correct definition for each type of star or scientific term from the options below. Once the star begins fusing hydrogen, it is said to enter the main sequence. Xmind is the most professional and popular mind mapping tool. This is the current age of the suns vortex, halfway 24ths in its stellar life cycle. Stars spend a majority of their lifecycle in this sequence. The life cycle of a star like the sun a star is born.
Stellar star life cycle xmind mind mapping software. Set of cards on the stages in the stellar life cycle for nongiant stars for students to sort into correct order. Use sketches or pictures from the www to support your description. The table shows the lifetimes of stars as a function of their masses.
Gravity, as it always does, tries to pull the materials together. There are loads of powerpoints about the life cycle of stars and stellar evolution but all are either missing stages and or completely devoid of pretty pictures of stars, nebulae etc. The space below unsequenced human life cycle shows eight pictures of humans at various ages. Oct 02, 2012 there are loads of powerpoints about the life cycle of stars and stellar evolution but all are either missing stages and or completely devoid of pretty pictures of stars, nebulae etc. Stellar cycles post assessment activity image descriptions the name and type of object andor artist illustration for each of the images is listed below. Overview of stellar evolution in general, the story of stellar evolution is the ongoing struggle of stars to generate internal energy in order to resist collapsing under their own selfgravity.
Chapter five socialization and life course scent of a woman 1992 major application. How a star changes over its life cycle is described below. The life cycles of stars planetary nebula fusion red giant white dwarf binary star spectral class hr diagram supernova core bounce nova main sequence luminosity. Stellar evolution lab the life cycle of a star worksheet. Stellar life cycle stages stellar nebula a stellar nebula is the birthplace of stars. This is the next age of the suns vortex, 34 way in its stellar life cycle. By the end of the lab they will be able to describe where stars come from, how they are created, what determines the path they take, and draw the life cycle diagram. The stage of stellar evolution is indicated by the bold type.
The url for each of the deep sky objects is listed. Star life cycles online student instructions page overview. The redgiant branch as the core continues to shrink, the outer layers of the star expand and cool. If playback doesnt begin shortly, try restarting your device. As stars progress through life, their size, luminosity and radial temperature change according to predictable natural processes. By the end of the lab they will be able to describe where stars come from, how they. The density and temperature increase so nuclear fusion can start. Stellar evolution is the theory of the life cycle of stars. Stellar life cycle stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Once the temperature is high enough in a stars core, hydrogen atoms begin nuclear fusion to helium. Stellar life cycle in giant galactic nebula ngc 3603 edited by david l. Star birth and life imagine an enormous cloud of gas and dust many lightyears across.
Depending on the mass of the star, its lifetime can range from a few million years. Stellar life cycle definition of stellar life cycle by the. Stellar life cycle article about stellar life cycle by the. Third, check your sequence with the expert sequence sequenced large star cycle page and propose reasons for any discrepencies. Depending on the mass of the star, this lifetime ranges from only a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of the universe. Solarstellar life cycle end of earth death and disease. Stars are central players in what might be termed galactic ecology.
We were trying to make connections to previous life cycles we had learned butterfly, plant. Eventually, enough gas and dust has been collected into a. Due to relatively high stellar densities, interesting dynamical events, such as stellar collisions and binary formation and disruption, take place in a cluster. Worldwide telescope ambassadors program life cycle of a star.
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