P4: Electricity, Waves and Radiation

Static Electricity
1. Materials become charged and attract other materials
2. Opposite charges attract
3. Like charges repel
4. Insulating Material
5. Transfer of electrons
  1. Negative Charges
    1. Extra Electrons
  2. Positive Charges
    1. Lack Of Electrons
6. Dangers
  1. Sparks
  2. Lightning
  3. Electrostatic shock
  4. Earthing To Discharge
Using static electricity
1. Electrostatic dust precipitator
  1. Removes smoke particles from waste gases
Atoms
1. Ions
2. Electrons
  1. Current (amps, A)
    1. Power (watts, W)
    2. Voltage (volts, V)
    3. Resistance (ohms)
      1. Resistance= Voltage/Current
3. Nucleus
Ultrasound
1. Medical Imaging
  1. X Rays
    1. Gamma Rays
2. Longitudinal Waves
  1. Sound
    1. Frequency

Resource summary

	Created by ItsMahbuba almost 11 years ago