SEGway home > for educators > space science > about Classifying Galaxies > student questionnaire

Teacher _____________________ Student    _____________________ grade  ________age ________ Classifying Galaxies Content 1. What is a galaxy? a. a cloud of gas held together by momentum b. the empty space between stars c. billions of stars, dust, and gas held together by gravity d. planets revolving around a central star 2. Where are galaxies found? a. in the Milky Way b. all over the Universe c. in the Solar System d. near the Moon 3. What do galaxies look like? a. egg-shaped b. pinwheels c. spirals or ellipses d. spirals, barred spirals, or ellipses 4. Edwin Hubble classified galaxies according to their a. color b. shape c. temperature d. age   5. Which sequence of Hubble's class names is arranged from least elongated to most elongated? a. E0 E3 E5 b. E1 Sa SBa c. B0 S0 SBa d. E3 E2 E1   6. How are galaxies in  the classes Sa, Sb, and Sc, different? a. How bright they are b. The shape of the spiral arms c. They are different sizes d. The shape of the bright nucleus 7. What does it mean to classify something?       The Subject: 1. Would you like to learn more about astronomy? 2. What was one thing you learned that you didn't know before? 3. Would you like to learn more about Earth and Space Science? 4. Did you tell anyone outside the class about the internet lesson? Who?  What did you say? Copyright © 1997 The Regents of the University of California. Have a science question? Visit our Ask an Expert page. Email questions or comments about SEGway resources to: outreach@ssl.berkeley.edu