Elenco Snap Circuits® Home Learning - Manual (Page 38)

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Materials List
2 2-Snap Wires
2 3-Snap Wires
1 5-Snap Wire
1 6-Snap Wire
1 Battery Holder (B1)
1 Slide Switch (S1)
1 Speaker (SP)
1 Music Integrated Circuit (U1)
1 Black Jumper Wire
1 Red Jumper Wire
1 Small cup of water
1 Teaspoon of table salt
Build the circuit as shown, but leave the jumper wires out of the cup of water. Turn on the switch. What happens?
______________________________________________________________________________________________________
Place the ends of the jumper wires in the cup of water. Now what happens? _______________________________________
If the alarm did not sound, add 1 teaspoon of table salt to the water. Place the ends of the jumper wires in the salt water. What
happens?
______________________________________________________________________________________________________
Try holding the ends of the jumper wires with your fingers. Does your body set off the alarm? __________________________
Are you a conductor or insulator for this circuit that uses only 3 volts? _____________________________________________
Activity 30
Simple Water Alarm
(ST
ANDING)