An activity about angular, (apparent) size and magnification in astronomy
Students do a classroom activity of measuring the angular size of something from several distances. On the Internet, they obtain and examine images with various magnification factors and estimate the angular size of Andromeda.
Best for Grades: 9 - 12
Nation Science Education Standards: Earth Sciences 9-12 E, G
Time Required: 1/2 to 1 50-minute period