Grade 8 Week 9 Absorption and Transmission of Light PDF

WAVES AND THEIR APPLICATIONS Unit 1 – Module L Standards: MS-PS4-1 Use mathematical representations to describe a simple model for waves that includes how the amplitude of waves is related to the energy in a wave MS-PS4-2 Develop and use a model to describe that waves are reflected, abso...

WAVES AND THEIR APPLICATIONS Unit 1 – Module L Standards: MS-PS4-1 Use mathematical representations to describe a simple model for waves that includes how the amplitude of waves is related to the energy in a wave MS-PS4-2 Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials  Describe absorption and transmission of light. List some transparent, translucent, and opaque objects. ► Objectives Categorize objects as Opaque, Translucent, Transparent Compare and contrast transparent , translucent and opaque objects  ∙ Transmission ∙ Absorption ► Vocabulary ∙ Transparent ∙ Translucent ∙ Opaque Starter Think-pair-share activity These sandwiches are wrapped in clear plastic wrap, waxed paper, and brown paper. How do the different wrappers affect what we see?  Group Work – Group 2 Research skills Search for the meaning of transparent, translucent, and Group 1 opaque objects Search for the meaning of transmission of light Group 3 Search for the meaning of light absorption Transmission of Light The passing of light waves through matter is called transmission. t t e r Ma Types of medium through which light passes can transmit all, some, or none of the light. The clear plastic Only some of the The brown paper wrap transmits all light is transmits none of of the light transmitted the light (opaque (transparent through the waxed object). So, we object). So, we can paper (translucent can’t see the clearly see the object). So, sandwich within it sandwich inside. sandwich is at all. visible, but it looks ABSORPTION OF LIGHT ▶ Absorption is the transfer of light energy to matter. ▶ Many materials, including wood, brick, and the brown paper around the third sandwich, are opaque. ▶ Opaque materials do not let any light pass through them. Instead, they reflect light, absorb light, or both. ▶ When light enters a material but does not leave it, the light is absorbed, and shadow is formed. Checking understanding Page 63 Exit ticket: https://wordwall.net/play/29917/057/472 DAY 2- LESSON 4- The behavior of light waves passing through transparent, translucent, and opaque objects (lab) Identify different objects (transparent, translucent, and opaque) ► Objectives: Categorize different materials based on the amount of light passing through them Investigate behavior of light that passes through different objects.  Day 3 – Project (Identifying Waste Issues in the School) Objectives: ▪ Conduct a waste audit of the school environment. Outcomes: ▪ Students assess the main waste issues in their school. ▪ Students begin to organize and analyze waste data to identify problem areas. ▪ Students start considering potential solutions to the identified problems. Procedures: ▪ Science: Conduct a waste audit, categorizing types of waste and recording their amounts. Day 4 – Sports Day