Using the position and time, students can calculate the average velocity. Velocity is defined as the rate of change of position. Scientists often look at a number of points in different parts of the CME to get an overall idea of what is happening. Sometimes it can be tough to trace a particular feature. Further work SOHO observes many CMEs and this sort of exercise can be performed on other sets of images we have on the web.
Students can measure their the velocities and accelerations too.
This activity is based on Sun Centered Physics , a set of lesson plans developed by Linda Knisely. Send questions and comments to Terry Kucera or Dennis Christopher .