1) The material which allow electricity to pass through them are called----- a) conductors b) wood c) insulators 2) The material which do not allow electricity to pass through them are called------ a) conductors  b) insulators c) copper 3) Which of the following is an example of an insulator? a) silver b) rubber c) iron 4) Which of the following is an example of a conductor? a) plastic  b) copper  c) wood 5) which kind of circuit has two or more path for the current to flow along? a) incomplete circuit b) parallel circuit c) series circuit 6) Which of the following describes the flow of current in a series circuits? a) The current is controlled by a switch b) The current doesn't flow c) the current only has one path to flow along  7) Electricity which flows through a material is called - - - - a) circuit b) insulator c) conductor 8) The device which is used to turn an electrical appliances on or off is called a - - - - a) open b) circuit c) switch 9) A substance which allows electricity to pass through is called an - - - - a) Dam b) conductor c) insulator 10) The hearing range of dog is---- a) 120,000 hertz  b) 12,000 hertz c) 32,000 hertz

Science|Grade IV|Sound, light and electricity

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