#8 One Direction for LED

Objective: To show how electricity can only pass in one direction through an LED.

In #7, the previous project, the D1 LED is placed forward, or right. In this project, it's placed left, and electricity only goes in one direction. If you place the LED the other way and turn it on, it does not light up because electricity can only go in one direction.

#9 Conduction Detector

Objective: To make a circuit that detects the conduction of electricity in different materials.

Conduction is where electricity is being transported from one place to another, like a charger for a computer. This conductor senses if electricity is being conducted. Mom and I tested to see if metal or plastic or glass were conductors. Metal = yes, plastic and glass = no.

#10 Space War Alarm Combo

Objective: To combine the sounds from the space war and alarm integrated circuits.

This one is just for fun. It doesn't really say anything. It combines alarm sounds and space war sounds, but my space war IC is broken.

#12 Decreasing Saucer Lift

Objective: To show how voltage reflects the speed of a DC motor and can decrease the lift of the saucer.

This project is copied from Project #11, and the lamp is added, which adds more electricity to the project being done, which makes it have a harder job so the fan goes slower, and so does the motor. The fan won't go up in the air because the lamp adds resistance.

#14 The Fuse

Objective: To show how a fuse is used to break all current paths back to the voltage source.

The piece that is not connected to the rest blocks the passage of electricity so the fan can't run, and neither can the lamp. If you take any circuit out, it won't work because the flow of the electricity needs to go in a circle so it can keep working.

The part at the bottom was part of #13 Two-Speed Fan, which was attached and now is detached, which blocks all current flow and makes it go back to the batteries.

#13 Two-Speed Fan

Objective: To show how switches can increase or decrease the speed of an electric fan.

There are two different switches. Well, there is a lamp so it doesn't go as fast because more electricity is being used. So when you press the Press switch, that makes the lamp stop and the fan goes faster. The S2 switch stops the lamp (turns it off) and the fan goes faster.

Flying Saucer

Objective: to make a circuit that launches the fan blade to simulate a flying saucer.

I'm showing this one first because it's my favorite.  The circuits are set up in a circular direction and it makes the power go through the motor really fast because it goes at light speed.  When you turn the slide switch on, it goes slow for a little bit, and then it goes fast.  Then, when you turn the slide switch back to the off position, the fan has lots of force.  It doesn't stop immediately because of a force called inertia.  Once you turn it off, it flies up in the air.