1) What is force? a) a push and a pull b) being strong  c) repel and attract 2) Which one is balance force? a) b) 3) Which one is unbalance force? a) b) 4) What is a magnet?  a) A material object that produces a magnetic field b) The repeated process of a moving object 5) What happens when opposites charges meet? a) They attract b) They repel 6) What happens when equal charges meet? a) They attract b) They repel 7) What is an electromagnet? a) A temporary magnet b) An electric device c) An electric current d) A type of energy 8) Which one is **NOT** used in an electromagnet a) copper wire b) magnet c) nail d) battery 9) What is static electricity a) shocks b) an imbalance of electric charges c) the lights at a house 10) Which one is an example of patterns of motion a) b)

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