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Chapter 11 Miladys
Some Review Questions- Electricity
| Question | Answer |
|---|---|
| Electricity is | a form of energy that, when in motion exhibits magnetic, chemical or thermal effects |
| Two types of electric current: | Direct Current & Alternating Current |
| Volt measures | Pressure/Force |
| Amp measures | Strength of electric current |
| Milliampere measures | One thousandth of an amp |
| Ohm measures | Resistance of an electric current |
| Watt measures | Amount of energy used in one second |
| Kilowatt measures | 1,000 watts |
| Prevents excessive current from passing through the circuit | Fuse |
| A switch that automatically interrupts/shuts off an electric current at the first indication of overload | Circuit Breaker |
| The process of introducing water-soluble products into skin with the use of electric current | Iontophoresis |
| Forces acidic substances into deeper tissues | Cataphoresis |
| Visible light makes up _____% of natural sunlight | 35 |
| Ultra violet rays make up ____% of natural sunlight | 5 |
| ________ rays make up 60% of natural sunlight | Infrared |
| How are infrared lamps used? | For hair/skin treatments at a distance of at least 30 inches (76cm) with an exposure of 5 minutes. |
| Negative or positive pole of an electric current | Polarity |
| Process used to soften and emulsify grease deposits and blackheads in the hair follicles | Desincrustation |
| Wavelength | Distance between successive peaks of electromagnetic waves |