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Stars Mr. Skirbst Physical Science Topic 25
Stars Composition: - determined by spectral analysis - hydrogen (60 – 80%) - helium (20 – 30%) - other (O, C, Ne, N)
Star size Supergiants * 1,000x size of the sun (ex. Rigel)
Star size Giants * 10 - 100x size of the sun (ex. Aldebaran)
Star size Medium (Main-Sequence) * same size of the sun (ex. Sun, Sirius)
Star size White Dwarfs * smaller than the Earth (ex. Van Maanens)
Star size Neutrons * only several kilometers in diameter * a teaspoon would have a mass greater than the entire Earth!
Relative Star Sizes Giant Star Neutron White dwarf Medium-sized Supergiant
Star temperature Color of star can help determine the surface temperature of stars COLORTEMP (oC) Blue35,000 White10,000 Yellow6,000 Red-Orange5,000 Red3,000
Star brightness Absolute brightness (magnitude) - light actually given off Apparent brightness (magnitude) - light observed by someone
H-R Diagram Hertzsprung-Russell Diagram * Relates absolute magnitude and surface temperature of stars H-R DiagramH-R Diagram H-R Diagram AnimationH-R Diagram Animation
Star Distances Parallax Method
Classifying Stars Color Temperature Size Composition/Mass Brightness.
Chapter 21, Section 2 Characteristics of Stars. Distance to Stars Light-year- The distance that light travels in one year, it is about 9.5 trillion kilometers.
Characteristics of Stars. Star Definition Star – A body of gases consisting mainly of hydrogen and helium that gives off a tremendous amount of energy.
Characteristics of Stars. A sphere of super-hot gases Mostly Hydrogen and Helium 1 to 2 percent of a stars mass may consist of heavier elements. What.
STARS Stars are the pieces of our universe. Each star is fixed in a certain spot in its Galaxy. Planets and other things orbit in a solar system.
10/23/2015 Stars Characteristics. Classifying Stars Color Temperature Size Composition/Mass Brightness.
There are MORE than 200 billion, billion stars in a universe. Most stars contain mainly hydrogen and helium.
Characteristics of Stars Parallax is the method used by astronomers to study the distance to relatively nearby stars. Parallax is the apparent.
Characteristics of Stars. Distances To The Stars Stars are separated by vast distances. Astronomers use units called light years to measure the distance.
STARS Mrs. Anton. Similarity - human and stars life cycle.
Chapter 15 – Stars, Galaxies and the Universe. Chapter 15 – History of the Universe Section 2 – Characteristics of Stars Section 2 – Characteristics of.
Characteristics of Stars There are millions of stars in the universe, but they are very far apart. Because of this, distances between stars are measured.
Stars. Imaginary patterns of stars are called ________. Constellations Stars are hot, bright, burning spheres of ____. Gas.
Characteristics of Stars 4-2. Constellations Today we use constellations to find stars in the night sky.
Ch. 27 Stars and Galaxies Ch Characteristics of Stars.
7/10/2016 Stars Characteristics. What are the characteristics of a star? Stars differ in… Stars differ in…MassSizeTemperatureColorLuminosity.
4.Constellation A. A grouping of stars (ex. Big Dipper) - named after animals, mythological creatures, and everyday objects.
Stars can be classified in three ways: Size – How massive the star is Temperature – A stars color reveals its temperature. ▪ Red stars have a cooler.
Sun Mr. Skirbst Physical Science Topic 26. The Sun.
Ch. 12 Lesson 1 Stars. What are stars? A star is large ball of gas that emits (gives off) energy produced by nuclear reactions in the star’s interior.
The Sun... And Other Stars! Star Classification:.
Characteristics of Stars. What is a galaxy? (hundreds of billions of stars) (hundreds of billions of stars) Our solar system is located in the Our solar.
Characteristics of Stars Notes. Classifying Stars Characteristics used to classify stars include color, temperature, size, composition, and brightness.
Solar System Notes Measuring Up! Science Lesson 25 Stars.
1 1.Uri looks through a telescope for two stars. He knows that both stars have the same absolute brightness and that the second star is twice as far from.
Properties of Stars. How do we classify stars? A.Size B.Temperature and Color C.Brightness.
Stars and Galaxies. Stars A star is made up of mostly helium and hydrogen gas particles. A star is made up of mostly helium and hydrogen gas particles.
Part 3: Characteristics of Stars STARS AND GALAXIES 1.
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) How do the appearances of stars A, B, and C in the photo at left compare? What are some ways.
PROPERTIE S OF STARS There are many different types of stars in the Universe… our star… The SUN; is a very average staraverage star What Do we Know about.
How Stars are Classified 1.Temperature 2.Brightness.
How Do Astronomers Measure the Brightness of a Star? Stars vary greatly in brightness Stars vary greatly in brightness Early peoples observed bright stars.
CHARACTERISTICS OF STARS COULTER. CLASSIFYING STARS Characteristics used to classify stars include color, temperature, size, composition, and brightness.
Stars. Astronomy The study of space How astronomers measure distance 1. Light years– The distance light travels in one year 9.461x km.
Classifying Stars. Stars are classified by size, temperature, color, and brightness.
The Family of Stars Please press “1” to test your transmitter.
How Do Astronomers Measure the Brightness of a Star? Stars vary greatly in brightness Early peoples observed bright stars and grouped them into constellations.
Starter: Compare the life cycle of a star with that of a human. 2/22-25/ /22-25/2013 Exit: If there are more low-mass stars than high-mass.
26.2 Stars Proxima Centauri, the red star at the center, is the closest star to the sun.
T HE U NIVERSE B EYOND By; Amber Self. S TARS o An Astronomer studies starlight. o Stars are classified by 3 colors and temperature. o Blue (Rigel) is.
Oneone ESS-5B Objective: To identify characteristics of stars in order to explain how these characteristics affect a star’s appearance from Earth. Astronomy.
H-R diagram. Stellar life recap Stars begin as a If they reach ___________________ They move onto the ________ __________ They spend most of their lives.
Characteristics of Stars. Color, temperature, size, composition, and brightness Color shows a stars surface temperature. Blue stars are hot with surface.
Characteristics of Stars. Stars… Are hot balls of plasma that shine because nuclear fusion is happening at their cores… they create their own light Have.
Magnitude! Copy the following words into your vocab section. Copy the following words into your vocab section. Apparent Magnitude: How bright a star appears.
Characteristics of Stars. What is a galaxy? It is a cluster of stars (hundreds of billions of stars) It is a cluster of stars (hundreds of billions of.
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.
Lunar Phases. Size Largest stars = supergiants or giants The next step down in size are called medium stars. White dwarf stars are about the size of.
Section 15.2 CHARACTERISTICS OF STARS. Constellation: imaginary patterns of stars Orion: the hunter, was named after a Greek myth Stars in a constellation.
26.2 Stars Stars Chapter 26.2 ParallaxParallax Video Lecture Birth of StarsBirth of Stars Video Lecture.
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