Students can observe, examine, explore and connect the simulations to the concepts and would have a better understanding of bending/refracting light rays in various media with different indices. worksheet related to the concept of refraction and reflection with conceptual questions and simulations activities. In:Post-Class Activity, Bending Light, Various Media, PhET.docx.Also, the reflected ray, the incident ray, and the normal line all lie in the same plane, the plane of incidence (Figure 2).In/Post-Class Activity, Bending Light, PhET The angle that is formed by the light hitting the reflecting surface and the normal line (the line orthogonal to the surface) is called the angle of incidence, whereas the angle between the light bouncing back from the reflective surface and the normal line is called the angle of reflection. This circumstance is called the law of reflection. ![]() The reflection of light is similar to the bouncing of a ball in that the angle at which the light hits the reflecting surface is identical to the angle at which it bounces off of it (Figure 2). We can only see materials that reflect or bounce back at least some light, or materials that emit light themselves. How we see a material depends on how the light interacts with the object. Often, a combination of absorption, transmission, and reflection happens. Once light hits a material, the light can either be absorbed, transmitted, or reflected. ![]() Materials can interact with light in different ways. A straight arrow traveling from a light source depicts a light ray (left) and a group of arrows represents a light beam (right). This lesson focuses on these aspects of NGSS Three Dimensional Learning:įigure 1. This lesson helps students prepare for these Next Generation Science Standards Performance Expectations:ĭevelop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials.ĭevelop a model to generate data for the iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.
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