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Name_________________________________ Unit 11 Magnets Review Date______________ ** Review vocabulary words** 1. What would happen if the north pole of a magnet was held near another north pole? a. The poles would attract b. The poles would repel c. their domains would rearrange d. they would become demagnetized 2. Where is a magnet the strongest? ____________________________________ 3. Name a. b. c. three materials that magnets are attracted to. _________________________ _________________________ _________________________ 4. Name a. b. c. three ways an electromagnet is different from a bar magnet. ___________________________________________________________ ____________________________________________________________ ____________________________________________________________ 5. What is a solenoid? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ 6. Which process occurs when a paper clip is held near a magnet? Explain what happens to the paper clip. _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ 7. What are two ways you can increase the strength of an electromagnet? a. _______________________________________________________________ _______________________________________________________________ b. _______________________________________________________________ _______________________________________________________________ 8. Name the four types of magnet and choose two types to describe. a. _______________________________ b. _______________________________ c. _______________________________ d. _______________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ 9. The attraction or repulsion of objects that is generated by moving or spinning electric charges is known as the a. magnetic field b. magnetic force c. domains d. magnetic poles 10. How are atoms arranged in a magnet? _________________________________________________________________ 11. If a person is running on a track and then trips on a rock and falls, which of Newton’s Laws best describes this scenario? ___________________________________________________________ 12. If the gases of a space ship press down and the space ship flies up, which of Newton’s Laws best describes this scenario? _________________________________________________________________ 13. When electrons flow through a wire it is known as a(n) a. electric current b. magnetic field c. electric force d. magnetic force 14. Which two factors determine an object’s potential energy? a. speed and mass b. speed and velocity c. mass and height d. acceleration and speed 15. Label the following in order from strongest magnetic field to weakest magnetic field. (1 would be the strongest, 2 would be second strongest and 3 would be the weakest) a. A wire with electrons flowing through it. __________ b. A coiled wire with electrons flowing through it. ________ c. A wire with electrons flowing through it coiled around an iron core. ______ 16. Which type of circuit is used in homes and schools? a. parallel circuit b. series circuit 17. Based on your answer above, explain why that type of circuit is used in homes and schools. _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ 18. Label the atom below. 19. Whenever an energy conversion occurs, some of the energy is always converted into ____________________________ energy. 20. What energy conversion takes place in an electric motor? ____________________ energy to _____________________ energy.
