Measurements

• Density = mass divide by volume (unit= g/cm3) kg/cm3
• Voltage

  • voltmeter = equipment.
  • unit = volts
• Current - Ammeter - Amps (i)
• (R) Resistance - ohmmeter - ohms.

  Voltage divide by current.

  Resistance- the opposition to current flow
• Power - Voltage x Current (Wats)/W
• Length - ruler,meter stick (m).

  • L x W
• Area - L x W x H (m3)
• Volume of liquid - measuring cylinder (m3)
• Mass - balance (g)
• Time - stopwatch (secs)
• A burette measures the volume of a solution in a liquid
• The mass of an object is measured using a balance.
• Vernier calliper - measured diameter of circular objects
• Opisometer -to measure the length of curved lines (short)
• Celsius to Fahrenheit 9/5 x degrees (25) + 32
• 273.15 + 25 - degrees to Kelvin (25°c)
• Measurement - a number that shows the amount or size of something
• Mass - the amount of matter in an object.

  weight - downward force of an object due to the force of gravity