What is a spiral galaxy?
Spiral galaxies!

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Science, Social Studies
•
8th - 9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A spiral galaxy is a type of galaxy characterized by its spiral-shaped arms that wind outward from the center, containing stars, gas, and dust.
2.
FLASHCARD QUESTION
Front
Name an example of a spiral galaxy.
Back
The Milky Way is an example of a spiral galaxy.
3.
FLASHCARD QUESTION
Front
What are the main components of a spiral galaxy?
Back
The main components include a central bulge, spiral arms, and a halo of stars and globular clusters.
4.
FLASHCARD QUESTION
Front
How do spiral galaxies differ from elliptical galaxies?
Back
Spiral galaxies have a flat, rotating disk with spiral arms, while elliptical galaxies are more rounded and lack the distinct arms.
5.
FLASHCARD QUESTION
Front
What is the role of dark matter in spiral galaxies?
Back
Dark matter helps to explain the rotation curves of spiral galaxies, as it provides additional mass that affects their gravitational pull.
6.
FLASHCARD QUESTION
Front
What is the significance of the Hubble classification scheme?
Back
The Hubble classification scheme categorizes galaxies based on their shapes, including spiral, elliptical, and irregular types.
7.
FLASHCARD QUESTION
Front
What is the difference between barred spiral galaxies and regular spiral galaxies?
Back
Barred spiral galaxies have a central bar-shaped structure made of stars, while regular spiral galaxies do not.
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