1) which part of the magnet is the strongest? a) the center b) the poles c) the sides 2) A magnet will pick up an object that is made of …..... a) cotton b) steel or iron c) wood 3) An object that doesn’t allow to flow electricity through it is known as..... a) conductor b) insulator c) metal 4) If an object has the same number of positive and negative charges, its electrical charge is……. a) positive b) negative c) neutral 5) The area around a magnet is called the …………… a) magnetic force b) magnetic field c) work area 6) What type of magnet that can turn on and off? a) temporary magnet b) permanenet c) bar magnet 7) Two like charges a) attract each other b) repel each other c) no change 8) Static discharge means ……. a) Moving slowly of electricity. b) Flow of electricity c) Transfer from charged object to another object 9) What are the components of the electromagnet? a) copper wire, iron b) copper wire. Iron nail, and a battery c) Copper wire, paper, and a battery 10) What is a permanent magnet? a) Can turned on and off. b) Can be turned off. c) cannot be turned off. 11) What types of charges attract? a) positive and negative b) negative and negative c) negative and neutral 12) You made an electromagnet, but it was very weak. How can you make it stronger? a) Take away the battery. b) Use less copper wire. c) Coiled more copper wire. 13) The object that gains (takes) charged become ……………..charged. a) positive b) negative c) neutral 14) What determines the strength of the electric force? a) distance between objects b) the amount of electric charges c) both of them 15) Magnets have 3 poles ( ) a) true b) false 16) Electromagnet can be turned on and off ( ) a) true b) false 17) Electromagnet is an example of temporary magnet ( ) a) true b) false 18) Electromagnet is an example of permanent magnet ( ) a) true b) false 19) Strength of Electric Force depend on 2 factors charge and distance ( ) a) true b) false 20) A material that allows electric current to flow through it is called a insulator ( ). a) true b) false 21) A magnetic field is the area around a magnet where its force has an effect ( ). a) true b) false 22) Electric force is the area around a magnet where its force has an effect ( ). a) true b) false 23) All magnets are the same size, shape, and strength ( ) a) true b) false 24) Which type of charges do these balloons have? a) like charge b) opposite charge 25) This is .................. a) permanent magnet b) temporary magnet 26) What will happen when these magnets are become close together? a) attract to each other b) repel each other 27) Which of the following is a good conductor of electricity? a)  Metal b) Plastic 28) The Earth is the largest natural magnet a)  true b) false 29) Strength of Electric Force depends on 2 factors charge and distance a) true b) false 30) Unlike (opposite) poles attract each other a) true b) false 31) A material that allows electric current to flow through it is called a conductor a)  true b) false 32) All magnets are the same size, shape, and strength a)  true b) false 33) Electromagnet is an example of temporary magnet. a) true b) false 34) The net charge will be ........ a) positive b) negative c) neutral 35) The electrical charge will be ........... a) positive b) negative c) neutral

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