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Cabarles g3


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Cabarles g3

  2. 2. Contact number: 09488063108 THE BEHAVIOR OF LIGHT IN A TRANSPARENT OBJECT Overview: As light strikes different objects, it behaves differently. It may be absorbed by objects that are opaque such as wood and dark cloth thus, not allowing light to pass through them. This learning material provides the learners information that much light can pass through other objects. These are called transparent objects. The activities are easy to perform and by doing them, they will acquire knowledge of the concepts and apply them in their daily lives. Likewise, the learners can determine the importance of saving electricity through the use of transparent objects and be grateful for the natural light given by God. I. Objectives a. Tell that light passes through transparent materials b. Perform the activities with care c. Appreciate the natural light given by God II. Subject Matter Topic : Behavior of Light in Transparent Materials Science concept: Light passes through transparent materials. References : Science and Health, Carmelita C. Coronel,, pp. 135-136 Flight to Discovery, Victoria A. Polomar, p. 193 Science Spectrum, Rebecca R. Fallaria,, p. 185 PELC V. 4.4.2 Materials : a blade of clear glass jalousie plastic cover clear water 500 ml clear plastic bottle
  3. 3. uncovered book empty glass Duration : 40 minutes III. Procedure A. Motivation Light does not pass through opaque materials. What about in transparent materials? Can light pass through them? B. Activity a. Pre Lab Discussion 1. Grouping 2. Distribution of Activity Sheets and materials b. Activities (See separate sheet) Teaching Hints: • The teacher may conduct the activities beforehand to avoid confusion and misconceptions from the learners. • The pupils should be reminded of the precautionary measures when handling fragile materials during the conduct of activities.
  4. 4. DIFFERENT ACTIVITIES Activity 1 Place the plastic sheet on top of your book. Questions: Can you still read the words on the book? What made you read the words? Activity 2 Go outside and place the clear glass jalousie blade against the sunlight carefully. Questions: Does light pass through the jalousie blade? Why? Activity 3 Pour water into a clear plastic bottle until half full. Question: Can you see the water in it? Activity 4 Get an empty clear drinking glass. Place it in front of an object. Question: Can you see the object behind the glass? C. Analysis Teaching Hint: • The teacher should accept different answers from the learners
  5. 5. for every question raised. 1. In activity 1, what made you read the printed words on the book? Do you think you can still read them when you’re in the dark? Why? 2. In activity 2, was there much light that passed through the glass blade jalousie? Did you observe any shadow even the glass blade jalousie block the light? Why? 3. In activity 3, what kind of bottle was used that made you see the water in it? Was the light able to pass through the bottle? 4. In activity 4, what made you see the object behind the glass? 5. Based on the activities done, what materials allow light to pass through easily? D. Abstraction How does light behave as it strikes transparent materials? E. Application A glass window of your living room is covered with thick curtains. It is daytime but still you want to switch on the electric lights to give more light to the room. Aside from switching on the electric lights, what else can you do to lighten the room? By doing so, what were you able to save? IV. Assessment Put a check mark (/) on the blank if the material allows light to pass through and mark X if it does not. ____1. Water ____4. Clear water ____2. Wood ____5. Towel ____3. Plastic cover
  6. 6. Answer key: 1. √ 4. √ 2. X 5. X 3. √ V. Assignment List down 5 transparent materials found in your home. VI. Resource Lists 1. Activity sheets 2. Teacher Manual pages 62 – 63 3. Htm EXPECTED ANSWERS Group Activities Activity 1 1. Yes, I can still read the printed words on the book. It is because the plastic sheet is very clear. Activity 2 1. Yes, the light passes through the clear glass blade jalousie. It passes through because the glass blade jalousie is clear. Activity 3 1. Yes, I can see the water in it. Activity 4
  7. 7. 1. Yes, I can see the object behind the glass. Analysis 1. The light made me read the printed words on the book. I can not read the printed words if I am in the dark because there’s no light. 2. Yes, there was much light that passed through the glass jalousie blade. I didn’t observe any shadow even the glass jalousie blade blocked the light because the glass blade is very clear or transparent. 3. Clear bottle was used thus making me see the water in it. The light was able to pass the bottle. 4. The light made me see the objects behind the glass. 5. Transparent materials allow light to pass through easily. Abstraction Light can pass through easily in transparent objects. Application To brighten the room I will move aside the thick curtains and allow the sunlight enter or pass through the clear glass. By doing so, I can save electricity.