lesson 3 materials that undergo decay.pptx

Science 5

1. Science IV Lesson 3: Materials that undergo DECAY JORDAN C. MENDOZA SCIENCE TEACHER Q1

2. Let’s review What properties of matter did you learn from lesson 1 and 2 ? Give me one example of a material that FLOATS Give me one example of a material that SINKS

3. Look at the pictures

4. What is Decay ? Decay means to be slowly destroyed into bits in the presence of water, air and soil Not all plants and animals decay at the same time

5. Some factors that contribute to the decaying process of a material are: 1. sunlight 2. Water (moisture) 3. microorganism

6. Question ? Why are left over food kept in refrigerators

7. Question: Why are left over food kept in refrigerators Answer : To avoid spoilage or to delay the spoilage of food since microorganism slows down when in cold environment

8. Assignment Bring the following tomorrow ( per group ): 1. Fruit or vegetable peal ( balat ng prutas o gulay ) 2. 1 Slice of bread 3. 4 Plastic yelo

9. Name of the material Characteristics of the Materials Before the set-up On the 3 rd day On the 7 th day 1. Banana peel 2. Vegetable peel 3. Kamote tops 4. Paper 5. Bread