Carrying Out Mensuration and Calculation

• What does linear measurement measure?

  Distance along a line
• How is linear measurement characterized?

  It is one-dimensional
• What are the units of metric measurement?

  Kilo, hecto, deka, meter, deci, centi, milli
• What are the units of English measurement?

  Inch, foot, yard, mile
• What are the types of linear measurements?

  • Direct measurement: basic measurement tools
  • Optical measurement: telescope, tachometer, triangulation
  • Electromagnetic method: radio or light waves
• What is direct measurement?

  Use of basic measurement tools
• What tools are used in optical measurement?

  Telescope and tachometer or triangulation
• What does the electromagnetic method rely on?

  Radio or light waves’ propagation and reflection
• Name a tool used in the electromagnetic method.

  Decca Navigator
• What is the purpose of a ruler?

  For drawing straight lines and measuring distance
• What is a tape measure used for?

  For length and area measurement
• What do calipers measure?

  Distance between opposing sides of two objects
• What is the function of a micrometer?

  To measure extremely small objects precisely