| A | B | 
|---|
| Transverse | Waves that go up & down at right angles to the path of travel, like a snake moving. | 
| electricity | Electrons flowing is _________. | 
| Vibration | When something moves back and forth, like a wave | 
| Longitudinal | Waves that compress like a slinky and go parallel to the direction of travel. | 
| Vacuum | Sound cannot travel through the _______ of outer space | 
| Decibel | The units of measure for loudness | 
| Hertz | frequency is measured in | 
| Pole | The end of a magnet, where the force is strongest | 
| Repel | Magnetic poles that are the same will | 
| Atom | Smallest particle that is still a chemical substance | 
| Proton | Positive Subatomic particle in nucleus | 
| Electron | Negative Subatomic particle | 
| outside | Electrons are __________ the nucleus | 
| Magnetic Field | Electricity flowing through a wire makes a ____________ around the wire.  (Compass needles show this) | 
| Electromagnet | A magnet that can switch on\off, reverse poles, and change strength. | 
| Repel | Two charges that are alike will | 
| Resistance | Electrons will always follow the path of least ____. | 
| Series | A circuit with lights in one path is a ______ circuit.  (One after another) | 
| parallel | A circuit with many paths is a ______ circuit. (side by side) | 
| Refracts | A pencil in water looks broken because the light _______,or bends between air and water. | 
| concave | A lens that’s thinner at the center is a ____ lens. | 
| reflected | The light you see is often _______ back off of things. | 
| absorbed | If you see a red shirt in white light, blue is being ______ by the shirt. | 
| plane | A flat mirror is a _____ mirror. | 
| Circuit | A path with an electric source, device, and conductor is a _______.. | 
| magnetism | Electrons spinning in the same direction is _______. | 
| Medium | The stuff a vibration or wave goes through. |