Science 4 First Quarter Exam Reviewer Part 2: Pollution
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Topics of this game:
- Hammering, pressing, cutting and bending are actions that can change the materials’ size, shape, texture but no new materials is formed.
- The galvanized iron will change in chemical appearance when hammered.
- By bending, the chemical composition of the ruler will not change.
- When material is heated, its temperature decreased because it absorbs the heat from the fire and this can cause the material to change its form from solid to liquid.
- When the solid material reaches its melting point, it will change into liquid.
- Mixture is the product of the random distribution of one substance through another without any chemical reaction.
- The use of chemical fertilizers can cause air, water and land pollution
- Polluted air will serve as a breeding places for flies, cockroaches and rats, while polluted land can cause skin itchiness, lung infections, cancer and other respiratory diseases
- Utilization of left over foods into compost and shaping of woods into furniture are useful changes.
- Why do some people prefer to use plastic bags than a paper? What is/are true about paper bag?
- You are going to clean the floor with spilled water. What are you going to use to dry up the water on the floor?
- You are teaching your sister on how to swim. What will you do?
- Your mom told you to segregate your garbage. Waste should be segregated into ______ groups.
- What are the actions that you can do to turn a long metal wire into a hanger?
- What are the materials that can be bent with your bare hands?
- What are the materials that you can easily cut with scissors?
- What are the materials that you can easily cut with knife?
- What most likely will happen if the temperature decreases?
- What most likely will happen if the temperature increases?
- Which of the following materials will form a heterogeneous mixture?
- Which of the following materials will form a homogeneous?
- Why dynamite fishing can cause harmful changes?
- Why do we need to recycle plastics instead of burning them?
- Why do we need to plant more trees?
- What most likely will happen if we have polluted land?
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