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© Boardworks Ltd 20111 of 19 Stars
© Boardworks Ltd 20112 of 19
3 of 19© Boardworks Ltd 2011 A star is ‘powered’ by nuclear fusion reactions in its core. In the Sun, and in most stars, hydrogen atoms fuse together to form helium. This provides the energy for life on Earth. What powers a star? Each second, the Sun produces 4 × 10 26 joules of energy. It would take 2,000 million nuclear power plants a whole year to produce the same amount of energy on Earth. Nuclear fusion involves light atomic nuclei joining together to form heavier ones. Each fusion reaction produces a small amount of energy, but there are billions of reactions per second.
4 of 19© Boardworks Ltd 2011 However, not all elements are made in the early stages of a star’s life. Some of the heavier elements are only made when a star explodes at the end of its life. Nuclear fusion in stars produces new atoms. How are elements made? When all the hydrogen has been used up, other elements are fused together to make the heavier elements of the periodic table. In the early stages of a star’s life, nuclear fusion mainly produces light elements such as helium.
5 of 19© Boardworks Ltd 2011 Heavy elements on Earth
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7 of 19© Boardworks Ltd 2011 The life cycle of a star main sequence star neutron star black hole Every star goes through a life cycle. A star’s life cycle is determined by its size. red super giant red giant white dwarf super nova black dwarf
8 of 19© Boardworks Ltd 2011 How do stars begin and end?
9 of 19© Boardworks Ltd 2011 Life cycle of small stars
10 of 19© Boardworks Ltd 2011 What is a supernova?
11 of 19© Boardworks Ltd 2011 After a really massive red giant collapses in a supernova explosion, it leaves an object so dense that nothing, not even light, can escape its gravitational pull. Some scientists believe that there are black holes at the centre of galaxies. If light cannot escape from a black hole, then how can a black hole be observed? How are black holes formed? The end of the life cycle of really massive stars is different to that of massive stars. This is called a black hole.
12 of 19© Boardworks Ltd 2011 How can a black hole be ‘seen’?
13 of 19© Boardworks Ltd 2011 Life cycle of large stars
14 of 19© Boardworks Ltd 2011 Terms about the life cycle of stars
15 of 19© Boardworks Ltd 2011 Stars life cycle summary
© Boardworks Ltd 201116 of 19
17 of 19© Boardworks Ltd 2011 Glossary
18 of 19© Boardworks Ltd 2011 Anagrams
19 of 19© Boardworks Ltd 2011 Multiple-choice quiz
1 of 38© Boardworks Ltd of 38 © Boardworks Ltd of 38 The Solar System is about 4,600 million years old. It was formed from a nebula – an.
1 of of 29 HUMAN LIFE EXPECTANCY What determines how long you will live? Why do some people grow to be 100 years old and some only live to be 50.
1 of 38© Boardworks Ltd of 38 © Boardworks Ltd of 38 The Solar System is about 4.6 billion years old. It was formed from a nebula – an.
LIVES OF STARS. A Star is born when the contracting gas and dust from the nebula become so dense and hot that nuclear fusion starts. How long a star lives.
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.
Prior learning –Our sun is a star Key words –Sun, Star, black dwarf, white dwarf, red giant, supernova, nebulae, dust, hydrogen, helium Unit 11 – Science.
The Life Cycle of Stars. Stars are huge masses of gas with a massive gravitational pull that keeps the planets orbiting around them. They also give out.
This Mini-Lesson Will Cover 1. What are the stage’s of a stars life cycle? 2. What determines the pathway of a star’s life cycle? 3. What pathway is our.
Birth and Life of a Star What is a star? A star is a really hot ball of gas, with hydrogen fusing into helium at its core. Stars spend the majority of.
Life Cycle of Stars. Stars are born in Nebulae Vast clouds of gas and dust Composed mostly of hydrogen and helium Some cosmic event triggers the collapse.
THE LIFE OF A STAR
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. 1. Star formation:A Nebula A nebula is a cloud of gas and dust.
Chapter 30 Stars and Galaxies. SOAR Chapter 30 Standard 1d. Students know the evidence indicating that the planets are much closer to the Earth than the.
A Star’s Life Cycle EQ: How do stars live and die?
© Boardworks Ltd of 20 © Boardworks Ltd of 41 KS4 Physics Earth and Beyond.
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.
Life Cycle of a Star! Chapter 28 Section 3. All stars in the universe are at different stages of their life cycles. A star’s mass determine its life span.
Lives of Stars Chapter 17 Section 4 Pages Chapter 17 Section 4 Pages
A JOURNEY TO THE STARS. WHAT IS A STAR? The star shines due to a process called … A star is a hot ball of plasma (electrically charged gases, mainly hydrogen.
Quiz on star life cycle. Using the quiz … Click through the quiz to see the questions and answers. Remember it is MUCH better to try to think of the answer,
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.
THE LIFE CYCLE OF A STAR Objective: I will compare and contrast the life cycle of stars based on their mass.
AQA Science © Nelson Thornes Ltd P3 4 Summary Stars and space Corel 768 (NT)
Life Cycle of Stars. Omega / Swan Nebula (M17) Stars are born from great clouds of gas and dust called Stars are born from great clouds of gas and dust.
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.
The Life and Death of a Star. Explain all life cycle of the stars. Explain EMR. KEY WORDS LuminosityMain sequence NebulaRed dwarfNeutron Star Red giantWhite.
NOT THOSE TYPES OF STARS! LIFE CYCLE OF STARS WHAT IS A STAR? Star = ball of plasma undergoing nuclear fusion. Stars give off large amounts of energy.
DO NOW QUESTION What life stage is our Sun currently in? What do you think will happen to our Sun as it gets older?
The Evolution of Stars - stars evolve in stages over billions of years 1.Nebula -interstellar clouds of gas and dust undergo gravitational collapse and.
Page 1: Front Page Page 2: Table of contents Page 3: Understanding Question 3 Page 4: Understanding Question 4 Page 5-11: 1. Nebula & Main sequence.
Star lifecycle. Star Lifecycle Some background Knowledge: Nuclear fusion - combining smaller elements into larger elements. Leftover mass is converted.
Nebula: Large amounts of gas and dust spread out in an immense volume Considered to be the birthplace as stars begin here.
Star’s Life Cycle Goal: Create a diagram to help you understand this process Do Now: Our Sun is an average size star –will it ever become a Black Hole?
Mike Chris. Stars begin as a nebula, or clouds scattered dust made mostly of hydrogen As the nebula collapses the contents of it begin to to heat up.
Life Cycle of a Star A journey through it’s birth ‘til it’s death. By Anna, Damon, Shannon, Jon, and Patricia.
Life Cycle of Stars Nebula hundreds of light years in size contract under gravity
Giant clouds of gas and dust The birthplace of stars! Nebula.
Stars Which includes the Sun? Cosmology- the study of cosmos.
The Life Cycle of a Star By Andy Kimmelshue. The birth of a star Stars are formed from gas and dust pulled together by gravity inside of a Nebula. A.
Magnitude! Copy the following words into your vocab section. Copy the following words into your vocab section. Apparent Magnitude: How bright a star appears.
Stars. Stars Our Sun is one type of star Our Sun is one type of star Create their own light Create their own light Nuclear fusion generates energy Nuclear.
Life Cycle of Stars Mr. Weaver. Birth of a Star Nebula- A cloud of gas and dust where stars are born. Composed mostly of Hydrogen, with a little bit of.
Birth Place of Stars: Dark and cold inter-stellar clouds These clouds are made of more hydrogen than helium. These clouds have very small amount of heavier.
Life Cycle of the Stars By Aiyana and Meredith
Stellar Life Stages Star Birth and Death. Background info. Since early human history, people have looked up at the night sky in amazement. What is out.
Stars Huge spheres of very hot gas that emit light and other radiation. They are formed from clouds of dust and gas, or nebulas, and go through different.
Classifying Stars Brightness. Some stars are so bright that you can see them even in a lighted city, while others are so dim that you can only see them.
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.
Definitions Sun: Star at the center of our solar system. Also another name for any star. Luminosity: measures how bright a star would be in relation.
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