The Life of a Star Cathcart science. “Which motion of earth causes which apparent motion of stars?” Rotation= the earth is spinning Revolution=the earth.

Slides:

Advertisements

Similar presentations

Life Cycle of a Star!.

Advertisements

Lives of Stars.

The Life of a Star (15.1) BLM 15.1b

THE LIFE CYCLE OF STARS This star has entered the last stage of its life cycle.

Stellar Evolution Describe how a protostar becomes a star.

Star Life Cycle.

Stars & Galaxies.

Chapter 30 Stars and Galaxies.

Life Cycle of Stars.

Solar System. What is the Solar System? Consists of a star, (like the sun) and all of the planets, moons and other bodies that travel around it. Planets.

The Evolution of Stars - stars evolve in stages over billions of years 1.Nebula -interstellar clouds of gas and dust undergo gravitational collapse and.

DO NOW QUESTION What life stage is our Sun currently in? What do you think will happen to our Sun as it gets older?

Stars What are they?.

Lives of stars.

The Life of a Star All stars begin their lives as nebula.

Magnitude! Copy the following words into your vocab section. Copy the following words into your vocab section. Apparent Magnitude: How bright a star appears.

 A star is a ball of hydrogen, helium and enough mass that can bear nuclear fusion at its core  Stars are most often seen at night in a clear sky 

Describe different types of stars. What is a supernova? Do all stars end this way? Check Missing Assignments.

The Life Cycles of Stars RVCC Planetarium - Last updated 7/23/03.

Chapter 8 6 th Grade. Section 1 Stars are huge, bright balls of gas trillions of kilometers away. Stars have different colors so they must have different.

Classifying Stars The Hertzsprung-Russell Diagram (H-R Diagram) – Graph plotting the surface temperatures of stars against their luminosity (total energy.

Life Cycle of a Star. Nebula(e) A Star Nursery! –Stars are born in nebulae. –Nebulae are huge clouds of dust and gas –Protostars (young stars) are formed.

Lives of Stars Please get out your notes and a pencil.

Stars and Galaxies.

Life Cycle of a Star All Stars Begin the Same Way: Before life as a star  Nebula A nebula is a cloud of interstellar dust, hydrogen and helium gas,

The "Fingerprints" of Stars The best tool we have for studying a star's light is the star's spectrum. A spectrum (the plural is "spectra") of a star is.

The Life Cycle of Stars This is the death of a star (supernova) viewed by Tycho 400 years ago it was so bright you could see it with the naked eye.

THE LIFE CYCLE OF STARS Chapter 15 – 2 Part 1. TYPES OF STARS A star can be classified as one type of star early in its life, and as a different type.

LIFE CYCLE OF A STAR.

Studying the Lives of Stars  Stars don’t last forever  Each star is born, goes through its life cycle, and eventually die.

Life Cycle of a Star. NEBULA A huge cloud of gas and dust within a galaxy where new stars are born. A nebula can be several light-years across.

Life Cycle of a Star. NEBULA A huge cloud of gas and dust within a galaxy where new stars are born. A huge cloud of gas and dust within a galaxy where.

Lives of Stars Chapter 17 Section 4 Pages Chapter 17 Section 4 Pages

Star Evolution.

Life Cycle of a Star. What is a Star? 1. Giant balls of exploding gas consisting mainly of hydrogen and helium. 2. There are 100 billion stars in the.

Star Formation. 1) Nebula  Cloud of interstellar gas and dust  Collapses due to its own gravity  Begins Star Formation.

EARTH & SPACE SCIENCE Chapter 30 Stars, Galaxies, and the Universe 30.2 Stellar Evolution.

The First Stage To A Star - Nebula A stars life is like a human, it begins almost as a fetus, then infant, adult, middle-aged, and then death. The first.

Bell Ringer 10/13 Why do we celebrate Columbus Day?

The Life Cycle of Stars.

The life and death of stars Stars take millions of years to form. They then go through a stable period in their life and finally they die. Sometimes in.

STARS AND GALAXIES The Life Cycle of a Star: Stars have a life cycle and evolve over time. The mass of a star controls its Evolution Lifespan Ultimate.

Topic: The Life Cycle of Stars PSSA: D/S8.D.3.1.

Star lifecycle. Star Lifecycle Some background Knowledge:  Nuclear fusion - combining smaller elements into larger elements. Leftover mass is converted.

 How Stars Form: -The space around stars contains gas/dust  A nebula is a large cloud of dust/gas, some nebulas glow lit by other stars and some are.

LIVES OF STARS A large cloud of dust and gases is called a nubula. It is the source of all stars. Gravity pulls the gases closer together and they heat.

Life Cycle of a Star! Chapter 28 Section 3.

Years of Classifying Stars

Stars change over their life cycles.

Chapter 3.1graphic organizer

Stars begin as gas and dust called a nebula.

Stellar Evolution.

Notes using the foldable

Life Cycle of Stars.

Ch.2, Sec.2 – The Life Cycle of Stars

THE LIFE CYCLE OF STARS Chapter 15 – 2 Part 1.

Stellar Evolution: Aim: The Life Cycle of a Star

Life cycle of a star - foldable

A beginning, middle and end

Stars, Galaxies, and the Universe

Life-Cycle of Stars.

Chapter 19 Section 2 The Life Cycle of Stars Bellringer

Lives of Stars.

Stars Stars color determine its temperature.

How do stars differ from one another? Do stars move?

Years of Classifying Stars

Presentation transcript:

The Life of a Star Cathcart science

“Which motion of earth causes which apparent motion of stars?” Rotation= the earth is spinning Revolution=the earth orbits the sun Stars appear to circle Polaris during the night. Different constellations are visible different months of the year.

A star begins…. …as a ball of gas and dust. Gravity pulls the gas and dust together into a sphere. The sphere becomes dense and hot. Nuclear fusion changes hydrogen to helium.

Main-sequence stars…. ….are in the second and longest stage. As long as they have hydrogen atoms to fuse into helium atoms they just keep on releasing lots of energy.

Red giants…. ….are what stars can become after the main-sequence stage. This is a star that expands and cools because it has used up all of its hydrogen. The center of the star shrinks, but the atmosphere gets very large. The star may become a supergiant (100 times bigger than the sun).

White dwarfs…. …..are stars in their final stages. This is a small hot star that is the leftover center of a star. A white dwarf can no longer generate energy, but it can keep shining for billions of years

Really massive stars…. …might not make it to the white dwarf stage. Massive stars might explode in a bright flash called a supernova. A supernova can be brighter than a whole galaxy.

A neutron star… …forms from the center of a massive star that has exploded into a supernova. A neutron star has collapsed under gravity to the point that all of its particles have become neutrons.

A pulsar…. ….is a neutron star that is spinning.

If….. …..the center of the collapsed star is massive enough ….and it collapses further because of the strength of its own gravity ….it could become a black hole.

A black hole….. ….is a place in space where the gravity is so strong nothing can escape not even light.

You have a choice… You may write a story about the life of a star. Or You may create a comic strip about the life of a star. Either way, you will be graded as follows:

Your star must… Begin as a ball of gas and dust. Go from there to main- sequence, red-giant or supergiant, then to white dwarf. Or be a massive star that goes from main-sequence to supernova to neutron star (perhaps pulsar) and perhaps becomes a black hole.

For a perfect grade.. The stages need to be named. The stages need to be in order. The story or comic strip needs to show an understanding of each stage. EXTRA POINTS FOR ENTERTAINING THE TEACHER!