Stars and Galaxies. Gravitational Pull-Key Terms Mass- the amount of atoms inside an object. Mass does not change. Weight- the pull of gravity on the.

Slides:



Advertisements
Similar presentations
LESSON 13: Origins of the Universe
Advertisements

Galaxies (Study Guide) (ES1-E) I know that our Sun is one of hundreds of billions of stars in the Milky Way galaxy. Many of these stars have planets orbiting.
The Hertzsprung – Russell Diagram
Astronomy Review. What is gravity? The attractive force between two masses.
Stars & Galaxies.
The Universe… …is space and everything in it.
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.
Chapter 15 Section 4 Star System and Galaxies. Star Systems and Cluster Most stars are members of two or more star systems; Multiple Star System, Star.
GALAXIES Types Of Galaxies. How Far are Galaxies? Just as stars, galaxies are measured in light years. So what is a light year? Light travels at 186,000.
Star Systems and Galaxies
Chapter 3. The Scale of the Universe  Astonomers deal with very large numbers on a regular basis. For this reason, they use scientific notation to make.
Where is the Solar System in the Universe?. What is the solar system? The solar system consists of: – The sun (which is the name of our star) – Planets.
A. Earth’s Galaxy—and Others Galaxy: A large group of stars, gas, and dust held together by gravity. Milky Way: Our galaxy which contains about 200 billion.
Stars, Galaxies, and the Universe
THE UNIVERSE. How it started...  THE BIG BANG THEORY  At one time everything was compacted together in an extremely small, dense, ball of energy, and.
Chapter 21 Section 4 Star Systems And Galaxies. Done By Nick White And Gina Heath.
3/24/14Mass & Weight Warm up questions: Periods 1 & 3 1.Would you weight more on Earth or on the Moon? 1.What factors do you have to consider when figuring.
 Earth tilts at 23 ° and causes the seasons.  Earth revolves around the Sun.  The moon revolves around the Earth.  Moon reflects the sun’s rays and.
Galaxies The Life and Death of the Stars. A galaxy is a cluster of stars, gas, and dust that are held together by gravity. There are three main types.
Star Systems and Galaxies Galaxies and the Big Bang Theory.
Powers of 10 cienceopticsu/powersof10/index.html cienceopticsu/powersof10/index.html.
Structure of the Universe
Characteristics Of Stars Galaxy: A collection of stars, gases and dust. Universe: Contains billions of galaxies.
The Universe and Galaxies
Space Science Chapter 16.
The Universe 8.8A. The Universe The universe is all space and everything in it.
The Universe Science 8.
Unit Stars and the Universe. Stars A star is a giant, hot ball of gas. Stars generate light and heat through nuclear reactions. They are powered by the.
STARS & GALAXIES JEOPARDY
The Universe 8.8A. The Universe The universe is all space and everything in it.
What is a star? A big ball of gas & nuclear fusion.
Galaxies A galaxy is a collection of millions to billions of stars, dust, and gas bound together by gravity. There are over 1 billion galaxies in the universe.
Stars!!!! Galaxies and the Universe too!. Stars are far away! The closest star to Earth is the sun. The next closest is Proxima Centauri If you can travel.
Chapter 15 – Stars, Galaxies and the Universe. Chapter 15 – History of the Universe Section 2 – Characteristics of Stars Section 2 – Characteristics of.
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.
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.
Stars and Galaxies.
The Universe… …is space and everything in it.
Vocab Characteristics of a  Life of a   Systems & Galaxies Random.
Stars & Galaxies. A star is born… A star is made up of a large amount of gas, in a relatively small volume. A stellar nebula, on the other hand, is a.
Star Systems and Galaxies Chapter 4; Section 4. Star Systems and Clusters star systems--members of groups of two or more stars star systems--members of.
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.
Observing the Solar System. ??Why is Pluto no longer a planet?? According to the new definition, a full-fledged planet is an object that orbits the sun.
Unit 8: Stars, Galaxies, and the Universe. I. Scaling the Universe a.Universe: all of space and everything in it b.Due to such large or small numbers.
#8 Stars and The Milky Way Galaxy. As a Review: What is a Solar System? - Solar means Sun! So our solar system is made up of the sun, the.
8.8 A and B Components the Universe and the Sun
Stars and Galaxies Chapter 12. Stars Definition: a large ball of gas that emits energy produced by nuclear reactions in the star’s interior Planets, comets,
Distances in Space Characteristics of Stars
Galaxies and Stars.
Unit 2, Lesson 2 GALAXIES.
8.8 A and B Components the Universe and the Sun
Stars, Galaxies, and the Universe
Characteristics of stars
Universe and Galaxies Earth Science 2014 Pulford.
The Universe… …is space and everything in it.
It contains hundreds of billions of galaxies
The Universe.
Characteristics of Stars
Unit 12 Lesson 3 What Are Stars and Galaxies?
A. Earth’s Galaxy—and Others
19.3 Stars.
Put these objects in the correct order from largest to smallest:
ALL space and everything that is in it.
Solar System Our star (Sun), the planets, many moons, and other small bodies that ALL travel around the Sun.
ALL space and everything that is in it.
The Universe and Galaxies
Solar System Our star (Sun), the planets, many moons, and other small bodies that ALL travel around the Sun.
The Universe! Created by Educational Technology Network
Jeopardy – 18.1, 18.2 Universe Galaxies Milky Way Stars The Sun $100
The Big Bang Timeline Rapid Expansion of the Universe
Presentation transcript:

Stars and Galaxies

Gravitational Pull-Key Terms Mass- the amount of atoms inside an object. Mass does not change. Weight- the pull of gravity on the mass of an object. Weight changes depending on gravity. Gravity- the force that attracts one physical object to another.

Gravitational Pull All objects with mass have gravity. Large objects have a higher gravitational pull. Large= More Gravitational Pull Small= Less Gravitational Pull

Gravitational Pull Distance also impacts the amount of gravitational pull an object has. The closer 2 objects are together the higher the gravitational pull. Example- The Earth and Sun have a higher force of gravity than the Sun and Neptune.

Gravitational Pull  Which of the following has the most gravitational pull with the Sun? Mars or Pluto  Which scenario describes the star and planet with the largest gravitational force? Each star has the same mass. 1. Planet A- Distance=2 Size=2 2. Planet B- Distance=1 Size=2 3. Planet C- Distance=2 Size=1

What Makes Up the Universe? Star- a ball of mostly hydrogen and helium gas that shines extremely brightly. The sun is an example of a star. Clusters- a large group of stars that were formed at about the same time. Galaxy- a huge group of single stars, star systems, star clusters, and dust bound together by gravity. Galactic Cluster- a group of galaxies bound by gravity. This is the largest known gravitationally bound object in the universe.

Size Comparison Star  Star Cluster  Galaxy  Galactic Cluster

Stars Stars are classified by color, temperature, composition, and brightness.

Classifying Stars (Color and Temperature) The color of a star helps Astronomers predict the temperature of a star.  Red Stars- Temperature 3,200 Celsius  Yellow Stars- Temperature 5,500 Celsius  Blue Stars- Temperature 20,000 Celsius

Classifying Stars (Size) The largest stars are called giant stars or supergiant stars. Stars about the size of our sun are considered to be medium sized stars. White dwarfs and neutron stars are both smaller than our sun.

Classifying Stars (Chemical Composition) Stars vary in their chemical composition. Most stars are made up of the following: 73% Hydrogen 25% Helium 2% Various Elements.

Classifying Stars (Brightness) The brightness of a star depends on its size and temperature. Apparent Brightness- a star’s brightness as seen from Earth. Absolute Brightness- is the brightness a star would have if it were at a standard distance from Earth.

Galaxies There are 3 types of galaxies. 1. Spiral Galaxies- -Bulge in middle -Arms that spiral outward -Ex. Milky Way 2. Elliptical Galaxies -Shaped like a ball -Contain old stars 3. Irregular Galaxies -Do not have a regular shape -Contain large amounts of dust and gas

The Solar System, The Milky Way, and The Universe The Sun and the planets that we are familiar with are considered to be our solar system. The Sun is the center of our solar system. Our solar system is located in one of the spiral arms extending from the Milky Way Galaxy.

The Solar System, The Milky Way, and The Universe Our solar system is located in a spiral galaxy called the Milky Way. From the side, the Milky Way resembles a disk with a bulge in the middle. From the top, the Milky Way resembles a pin wheel (spiral shape).

The Solar System, The Milky Way, and The Universe The Universe is defined by astronomers as all of space and everything in it. The Milky Way is one of billions of galaxies in the Universe.

Checking Understanding List the following in order from smallest to largest. Galaxies, Galactic Clusters, Stars, Clusters

Checking Understanding List the following in order from smallest to largest. The Universe, the Solar System, the Milky Way Galaxy