B. Directions: Read the questions caretuly. explain how changes in matter afleet the environment. Write the letter of the best answer. 1. The following materials undergo n physicnl chnnge. Which of the changes in matter has a bad eflect on the environment? A. freezing of meat to preserve it in a long period of time B. using spray paint in tin cans to cover the rust C. cutting of the fabric to be made into clothes D. evaporation of rainwater 2. The following materials undergo chemical change. Which of these changes in matter has a good efect on the cenvironment? A. burning of plastic B.composting of biodegradable wastes C. exposing alcohol to direct heat or fire D.combustion of gasoline in the car's cngine 3. Cutting of trees has its advantages and uses to the pcople. Which of the following is a bad effect of this activity? A. Cutting of trees may result in house construction. B. Cutting of trees may result in paper production. C. Cutting of trees may result in furniture making. D. Cutting of trees may result in flooding. 4. The following activities can be done to pieces of wood, which of these can cause harm to the environment? A. burning pieces of wood to be made as charcoal B. shaping pieces of wood to be made into a chair C. using pieces of wood to be made as furniture D. forming pieces of wood as junior fence 5. Your father has celebrated his birthday yesterday; there were many empty plastic bottles of soft drinks left. What is the best way you can do with these empty plastic bottles to protect the environment? A. throw the empty plastic bottles into the seashore B. make the empty plastic bottles as flower vases C. dump the empty plastic bottles in the landfill D. burn the empty plastic bottles
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