http://sites.science.oregonstate.edu/physics/coursewikis/ph111/ 2020-01-26T00:06:06-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/ http://sites.science.oregonstate.edu/physics/coursewikis/ph111/lib/images/favicon.ico text/html 2012-05-31T09:32:34-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/doku.php?id=days:spring2012daybyday:spring2012day18:daily_schedule&rev=1338481954 9:30 - 9:50 Preparing for June 4 partial lunar eclipse 9:50 - 10:15 Considering the role of gravitational forces 10:15 - 10:45 Documenting position versus time and velocity versus time graphs 10:45 - 11:00 Group reports 11:00 - 11:20 Documenting current knowledge of motion graphs 11:20 - 11:30 Writing 11:30 - 11:50 Reflecting text/html 2012-12-01T02:29:07-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/doku.php?id=days:spring2012daybyday:spring2012day18:gravitational_force&rev=1354357747 All of the students lined up in the middle of the classroom and two students in the middle held force scales. Two reporters stood facing them so that they could observe the scales. Each side pulled their line in opposite directions, and the observers reported seeing the scales move in equal and opposite directions. We can infer that the earth is pulling on the moon and the moon is pulling on the earth (and the sun is pulling on the earth and the earth is pulling on the sun) in an equal and oppos… text/html 2012-12-01T02:28:11-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/doku.php?id=days:spring2012daybyday:spring2012day18:lunar_eclipse_discussion&rev=1354357691 We gave each grouptime to draw a diagram that shows the arrangement of the sun/moon/earth system for a lunar eclipse: At first, some of the groups had trouble deciding what they thought the arrangement would be. After we asked them to consider the arrangement during a solar eclipse (something we have recently talked about and been able to observe), things made a lot more sense. They understood that the earth's shadow is cast on the moon as the moon moves behind the earth. text/html 2012-06-01T13:05:17-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/doku.php?id=days:spring2012daybyday:spring2012day18:position_vs_time_and_velocity_vs_time_graphs&rev=1338581117 The students re-made the graphs they made Tuesday and also created graphs for moving toward motion. Emily explained negative velocity for each of the groups and each group designed a motion and predicted what the graph would look like. The students had a difficult time creating the graphs for slowing down and speeding up, so Emily suggested they use a small ramp (created using some blocks and their white boards) and a basketball. text/html 2012-05-31T11:35:42-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/doku.php?id=days:spring2012daybyday:spring2012day18:reflections&rev=1338489342 Student 1 Learned: If the speed is constant, the velocity will be a parallel line. Wants to Know: It's hard to explain the graphs in words. Student 2 Learned: Results are not always consistent. Wants to Know: About the final. Student 3 Learned: Why the moon orbits the earth (gravitational force). Wants to Know: Wants a better understanding. text/html 2012-12-01T02:33:12-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/doku.php?id=days:spring2012daybyday:spring2012day18:start&rev=1354357992 Daily Schedule Lunar Eclipse Discussion Gravitational Force Position vs Time and Velocity vs Time Graphs Reflections