Galaxy Types Exploration
Explore the different types of galaxies, their characteristics, and how they are classified in this Grade 12 science worksheet.
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Galaxy Types Exploration
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Read each question carefully and provide your best answer. Refer to the provided image for Question 1.
1. Observe the image below. Which type of galaxy is characterized by a flattened disk, a central bulge, and spiral arms?
Elliptical Galaxy
Spiral Galaxy
Irregular Galaxy
Lenticular Galaxy
2. What is the primary characteristic that distinguishes a barred spiral galaxy from a regular spiral galaxy?
Absence of a central bulge
Presence of a bar-shaped structure of stars across the central bulge
More tightly wound spiral arms
A higher proportion of young, blue stars
3. Elliptical galaxies are generally composed of older, redder stars and have very little and dust.
4. Irregular galaxies lack a distinct regular and often result from gravitational interactions with other galaxies.
5. Briefly explain the Hubble Classification Scheme for galaxies.
6. Lenticular galaxies are a transitional form between spiral and elliptical galaxies, possessing a disk but lacking prominent spiral arms.
True
False
7. The Milky Way is classified as an irregular galaxy.
True
False