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Science Thursday.pptx
- 1. SCIENCE
- 2. Choose the letter that corresponds to the best answer. 1.Which materials are used for personal body care? a.fertilizer c. sunscreen lotion b.paint d. vinegar
- 3. 2. Which farm chemical kills weeds that disrupt the growth of plants? a.antibiotic b.cologne c. disinfectant d.herbicide
- 4. 3. Why do people take medicine? Medicine makes _____________. a.body grow fast. b.people feel warm. c. food we eat taste better. d. illness or sickness disappear.
- 5. 4. How will you classify the detergent powder your mother used in washing dirty clothes? a. chemical farm b. cleaning agent c. medicine d. personal body care
- 6. 5. Which of the following will improve the quality of soil and promote the growth of plants? a. fertilizer b. herbicide c. insecticide d. pesticide
- 7. MATERIALS AT HOME, IN SCHOOL, AND IN THE COMMUNITY
- 8. Everything around us is matter- soil, wood, water, and air. It has different properties that make them unique. Matter have properties that make them good materials for producing useful as well as harmful products.
- 9. • Matter has different properties that can be considered to minimize waste. • Some materials have properties that make them useful such as vinegar, cotton, frying fan, and empty plastic bottles. Other materials have properties that make them harmful such as, detergent powder, paints, pins, and needles.
- 10. • Some materials can be used again but other materials are made for a certain purpose only and can cause harm or pollute the environment if not disposed of properly.
- 11. Materials are useful when they can be used anytime, anywhere and when they serve its purpose. Not all materials are useful all the time. It may also bring hazard. For example, air freshener is used to make your home smell sweet but can cause health issues.
- 12. Toxic substances may also be present in the things you commonly used like bleach, mothballs, paints, detergents, furniture polish, or cleaners. When a material has been used already and can be disposed of, it is considered a waste
- 13. Identify the materials put a if it is useful and X if it is harmful. ___1. knife ____6. mop ___2. paints ____7. broom ___3. vinegar ____8. cotton ___4. paracetamol ____9. needles ___5. plastic bottles ____10. detergent powder