Essential Question: What is a galaxy and how are they classified?

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Presentation transcript:

Essential Question: What is a galaxy and how are they classified? Topic: Galaxies Essential Question: What is a galaxy and how are they classified?

A massive system consisting of stars and a medium of gas and dust Topic: Galaxies Essential Question: What is a galaxy and how are they classified? Galaxy A massive system consisting of stars and a medium of gas and dust Galaxies contain star clusters and multiple star systems Put in categories base on their shape

Topic: Galaxies Essential Question: What is a galaxy and how are they classified? Spiral Galaxy Has a central bulge of old stars Has a flat rotating disk of new stars Has arms A spherical halo of stars Has a super massive black hole at the center of the central bulge We live in the spiral galaxy, the Milky Way

The Milky Way

Topic: Galaxies Essential Question: What is a galaxy and how are they classified? Elliptical Galaxy Shaped like a football Have little gas or dust Contain mostly old stars

Elliptical Galaxy

Topic: Galaxies Essential Question: What is a galaxy and how are they classified? Irregular Galaxy Do not fit into the elliptical or spiral category Have no definite shape Frequently the result of when galaxies collide

Irregular Galaxy

Now take some time… Take 2 minutes to go over your notes and highlight or underline the main ideas that answer the essential question, you should not highlight everything: Essential Question: What is a galaxy and how are they classified?

Time to use the left hand column You will now write your own questions using the verbs provided.

A massive system consisting of stars and a medium of gas and dust Topic: Galaxies Essential Question: What is a galaxy and how are they classified? Galaxy A massive system consisting of stars and a medium of gas and dust Galaxies contain star clusters and multiple star systems Put in categories base on their shape Choose one verb to write your question: Define Describe Explain

Has a central bulge of old stars Has a flat rotating disk of new stars Topic: Galaxies Essential Question: What is a galaxy and how are they classified? Spiral Galaxy Has a central bulge of old stars Has a flat rotating disk of new stars Has arms A spherical halo of stars We live in the spiral galaxy, the Milky Way Choose one verb to write your question: Define Describe Explain

Contain mostly old stars Topic: Galaxies Essential Question: What is a galaxy and how are they classified? Elliptical Galaxy Shaped like a football Have little gas or dust Contain mostly old stars Choose one verb to write your question: Define Describe Explain

Now let’s write a summary Look at each question you wrote on your own, and answer each question in a complete sentence.