![]() ![]() Transparent materials themselves appear clear, which is why you can clearly see any object behind a transparent material. Materials that let all or most of the light pass through are called transparent (Figure 1, right). When a material transmits light, it allows light to pass through. Materials can transmit, absorb, scatter, or reflect light. These classifications are based on how the materials interact with light that shines on them. We can categorize materials by their appearance, like transparent, translucent, or opaque dark or light colored glossy or matte finish, etc. This lesson focuses on these aspects of NGSS Three Dimensional Learning: Plan and conduct investigations to determine the effect of placing objects made with different materials in the path of a beam of light. This lesson helps students prepare for these Next Generation Science Standards Performance Expectations: Conduct an investigation to find out if a material is translucent, transparent, or opaque. ![]() Explain the difference between translucent, transparent, and opaque materials.End the lesson with discussion over a video call during the Reflect section. ![]() A set of materials can be prepared in advance or students can use materials found around the house. The Engage section of the lesson can be done over a video call, then students can work individually and independently during the Explore section, using the Student Worksheet as a guide. This lesson plan can be conducted remotely. In doing that, students will realize that different materials allow different amounts of light to pass through. They will place a variety of materials in front of an illuminated object and predict if and how well they will be able to see the object through the material sheet. When you are finished reviewing your answers, move on to the next section to perform your own experiment.In this lesson, students explore firsthand what transparent, translucent, and opaque mean, and how they are related to light. The transparent category should include objects such as the clear plastic bag and glass. Some objects you should have written in the translucent category include tissue paper, plastic bag, and sunglasses. Some of the objects you should have written in the opaque category include wood, aluminum foil, and cardboard. Were you surprised by which category any of the objects fell into?ĭiscuss your response with your teacher or parent.As the scientist experiments with each object, write the name of the object in the correct column:Īfter the video, share your chart with your teacher or parent. Label the first column "Transparent," the middle column "Translucent," and the last column "Opaque."Īs you watch the following ADLC - Elementary Science: Translucent, Transparent, Opaque (ADLC Educational Media) video, you will see a scientist experiment with different objects to determine which are transparent, translucent, and opaque. Now, grab a piece of paper and either fold both sides vertically toward the center, or draw two, evenly-spaced lines down the center to create three equal columns. Does the object allow any light to shine through?.Examples of opaque objects include brick, wood, steel, and bone.įind an object that you think is opaque. Opaque objects do not allow any light to shine through. Opaque objects either reflect light or absorb light. Does the light only partially shine through the object?.Examples of translucent objects include tinted windows, frosted glass, and your finger!įind an object that you think is translucent. When the light is scattered, it appears to only partially shine through the object and will not allow you to see objects on the other side clearly. The light that does shine through translucent objects is scattered. Translucent objects both transmit and reflect light. ![]() Examples of transparent objects include glass, certain plastics, and diamonds and other gem stones.įind an object you think is transparent. Usually when you think of transparent objects, you assume that they are clear, yet this is not always the case. Sometimes, the light can be refracted as it shines through the transparent object. Transparent objects are those that allow light to pass through. When talking about the way light reacts to objects, you first need to group all objects into one of three categories: (For more information about sound, check out Aditional Resources in the right-hand sidebar.) Unlike sound waves, light waves pass through objects based on the object's atomic structure, not its state of matter.
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