1) What type of material do electrons move the best in? a) conductor b) insulator 2) What are two ways to increase the force of an electromagnet? a) Increase temperature and mass b) Use less current and more coils c) Add more coils and more current d) Make sure the nail is shiny and the battery is closed 3) What would happen if a magnet broke into two pieces? a) One piece would be north and one south. b) Both pieces would have a N and S end. c) The magnet would turn into a dinosaur d) Pickle 4) What are the small regions in a magnet that must align in order for the material to be magnetic? a) Magnetic Domains b) Magnetic Regions c) Magnetic Atoms 5) What type of electricity is stationary? a) Current b) Looped c) Circle d) Static 6) What is one advantage of an electromagnet over a magnet? a) It takes up less space. b) It can be turned off and on. c) It's cute. 7) Is plastic a conductor or an insulator? a) Conductor b) Insulator c) Neither 8) True or False. An electric current can produce a magnetic field. a) True b) False 9) What types of materials are magnetic? a) Copper, gold, aluminum b) Iron, nickel, silver c) Iron, nickel, cobalt 10) True or False. Some objects experience forces from things that are not in direct contact with them. a) True b) False 11) True or False. If two magnets have opposite poles, the strength of their force of attraction would increase as they get closer together. a) True b) False 12) True or False. A changing magnetic field can induce electric current. a) True b) False 13) Why is the balloon sticking to the wall? a) It has glue on it. b) Opposites attract. c) Gravity 14) Which is an example of an insulator? a) Rubber b) Copper c) Silver 15) If you wanted to create a circuit that powers a light bulb that can be turned on and off, what types of objects would you need? a) A magic kit b) Power source, wires, light bulb, switch c) Power source, wires, television 16) True or False - Likes Repel. a) True b) False 17) Which is considered the best electrical conductor? a) Silver b) Gold c) Titanium d) Copper 18) Is water a conductor? a) Yes, every kind of water. b) No. c) Yes, but only pure water. d) Yes, but only water with minerals and/or salt. 19) What particle within an atom can freely move between atoms? a) Electrons b) Protons c) Neutrons d) Molecules 20) True or False. A changing magnetic field can induce electric current. a) True b) False

Electricity/Magnetism

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