BHS Physics Guide

Electromagnetism

Physics

Quarter 4

McGraw Hill Module 21

● The source of the field whether it is two point charges in the system and their initial positions and velocities (limited to one dimension), dipole magnets, or current-bearing wires. ● The nature of the interaction (electric or magnetic) between the source and the field. ● The relative magnitude and the direction of the field and its source. ● Representation of a field as a quantity that has a magnitude and direction at all points in space and which contains energy. Develop a quantitative model based on evidence to illustrate the changes in the field as distance from the source changes including: ● The source of the field whether it is two point charges in the system and their initial positions and velocities (limited to one dimension), dipose magnets, or current-bearing wires. ● The nature of the interaction (electric or magnetic) between the source and the field. ● The relative magnitude and the direction of the field and its source. ● Representation of a field as a quantity that has a magnitude and direction at all points in space and which contains energy. Relationships Students identify the following relationships between components of the given model, including: ● the changes in the field of the objects, given the initial and final positions and velocities of the objects. ● The relationship between fields and distance. If position changes, so will the field. ● The relationship between fields and forces. If the field changes, then so will the associated force. ● The relationship between fields and potential energy. If the field changes, then so will the associated potential energy. Connections Students use the model to: ● determine whether the energy stored in the field increased, decreased, or remained the same as distance from the source changes. ● support the claim that the change in the energy stored in the field (which is qualitatively determined to be either positive, negative, or zero) is consistent with the change in energy of the objects. ● Describe the cause and effect relationships on a qualitative level between forces produced by electric or magnetic fields and the change of energy of the objects in the system. ● Support the claim that fields will force objects in the direction that results in the lowest potential energy.

Standard 4.4 Asking Questions Addressing phenomena of the natural world or scientific theories

Students evaluate the given questions in terms of whether or not answers to the questions would: ● Provide examples of features associated with digital transmission and storage of information. For example ○ can be stored reliably without degradation over time