Transcript Galaxy - Cloudfront.net

Topic: Galaxies
Essential Question: What is a galaxy and
how are they classified?
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.
Topic: Galaxies
Essential Question: What is a galaxy and how are they
classified?
Choose one verb to
write your question:
Define
Describe
Explain
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?
Choose one verb to
write your question:
Define
Describe
Explain
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
Topic: Galaxies
Essential Question: What is a galaxy and how are they
classified?
Choose one verb to
write your question:
Define
Describe
Explain
Elliptical Galaxy
•Shaped like a football
•Have little gas or dust
•Contain mostly old stars
Now let’s write a summary
Look at each question you
wrote on your own, and
answer each question in a
complete sentence.