This applet simulates the motion of a charged particle in uniform electric and magnetic fields. The user can set the x,y, and z components of the electric field as well as the magnitude of the magnetic field, which is set to always point in the positive z direction. The user can also set the initial velocity of the charged particle. Then the applet displays the path of the charged particle, with instantaneous velocity and force vectors.
Web site contains java applet which simulates the forces acting on a baseball. The user can change the speed, the spin, the angle and the height of the ball. Additionally, the user can choose from among several ball parks, and weather conditions. The simulation shows the effect of the various parameters on the path of the ball. A wind tunnel panel allows the user to use velocity and pressure probes.
Web site contains java applet which simulates the forces acting on a baseball. The user can change the speed, the spin, the angle and the height of the ball. Additionally, the user can choose from among several ball parks, and weather conditions. The simulation shows the effect of the various parameters on the path of the ball. Several views of the path of the ball are provided.
In this introductory activity, students view and interpret a satellite visualization movie of the 2005 Atlantic hurricane season that shows a composite of Atlantic Basin satellite imagery and sea surface temperatures overlaid with hurricane paths and names. Through close examination of this movie, students develop a generalized understanding of the multiple systems and process that influence hurricane life cycles. A whole class discussion of the movie after the viewing will elicit questions that form the basis of later investigations in the Investigating Hurricanes unit.
Students explore issues related to the rapid intensification of hurricanes. They become familiar with the concepts of heat energy and the specific heat of water and interact with animations of sea surface temperature images to identify the Gulf Stream and the Loop Current. Students use ImageJ, a free image processing application, to explore visualizations of heat content in the Gulf of Mexico just before Hurricane Katrina. They plot the path of Katrina as an overlay on these visualizations and observe changes in the heat content of Gulf waters as the hurricane passed over it.
In this interactive activity, students view six models to investigate what a gas, liquid, and solid look like at the atomic level. Choose to view a gas or liquid made of atoms only, a gas made of diatomic molecules, a liquid made of triatomic molecules, or two types of solids. In each simulation, users may highlight an atom and view its trajectory to see how the motion differs in each of the three primary phases. Don’t miss the extension activity: a side-by-side comparison of the atomic structure of a hot liquid and a cold liquid. If you click “Withdraw the Barrier”, the two liquids mix.
