Sounds are made from ________., vibration, circuit, _______ are components of the circuit., lamp, wires, lamp, battery, wires, We use the _______to break the circuit , lamp, switch, There is no sound in space., True, False, When the switch is (on) , the electricity flow, the electricity does'nt flow, Sounds more than ____dB damage our ears , 120, 90, A group of cells is a ______., circuit, battery, One way of connecting wires is:, touching bare wires, using a lamp, The circuit works when it is _____, complete, not complete, We can use ______ to prevent hearing the noise., speakers, ear defenders, We call unwanted sounds ______, vibration, noise, We can use circuits in ______, books, lights at home, When we add more light bulbs we have ______, more light, less light, Sound travels in the gas, solid, and liquid, True, False, We measure the loudness of sounds using the_____, sound level meter, ears.

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