1) Which is a useful material? a) Broken glass b) Clean paper c) Rotten food d) Smoke 2) Which can hurt you because it is sharp? a) Plastic bottle b) Broken glass c) Old newspaper d) Cardboard 3) Why do we need useful materials? a) They help us do things safely b) They make bad smell c) They cause sickness d) They pollute 4) Which one is harmful? a) Empty jar b) Sharp metal c) Box d) Spoon 5) What should you do with harmful materials? a) Throw them in the right trash bin b) Play with them c) Leave them anywhere d) Keep them in your pocket 6) Which material can be used again or recycled? a) Clean plastic bottles b) Spoiled fruit c) Used tissue d) Broken mirror 7) Why are some chemicals harmful? a) They taste good b) They can make us sick c) They are colorful d) They are soft 8) What happens if harmful materials are thrown anywhere? a) The place becomes dirty and unsafe b) The plants grow faster c) The air smells good d) The place stays clean 9) How should we use useful materials? a) Use them carefully b) Break them on purpose c) Throw them away even if not broken d) Leave them outside in the rain 10) What is a good way to handle trash? a) Burn plastic b) Mix chemicals c) Put trash in the right bins d) Touch broken glass with bare hands

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