How to convert between nm, um, mm, m, km

• What are the different units of length mentioned?

  Nanometers, micrometers, millimeters, meters, kilometers
• Why do we use different units of length?

  Each unit is 1,000 times bigger or smaller
• How do you convert 6 mm to meters?

  Divide 6 by 1,000
• What is the result of converting 6 mm to meters?

  0.006 m or $6 \times 10^{-3} \text{ m}$
• How do you convert 0.006 m to kilometers?

  Divide 0.006 by 1,000
• What is the result of converting 0.006 m to kilometers?

  0.006 km or $6 \times 10^{-6} \text{ km}$
• How do you convert 6 mm to micrometers?

  Multiply 6 by 1,000
• What is the result of converting 6 mm to micrometers?

  6,000 micrometers or $6 \times 10^{3} \text{ microm}$
• How do you convert 6 mm to nanometers?

  Multiply 6 by 1,000 twice
• What is the result of converting 6 mm to nanometers?

  6 million nanometers or $6 \times 10^{6} \text{ nanom}$
• How do you convert 340 nanometers to millimeters?

  Divide by 1 million or two steps
• What is the result of converting 340 nanometers to millimeters?

  0.0034 mm or $3.4 \times 10^{-4} \text{ mm}$
• What are the sizes of some common objects in relation to nanometers and micrometers?

  • Atoms: 0.1 to 0.5 nanometers
  • Glucose: about 1 nanometer
  • Viruses: about 100 nanometers
  • Bacteria: about 1 micrometer
  • Animal/Plant cells: 10 to 100 micrometers
  • Human hair: about 100 micrometers wide
• What is the smallest size visible to the naked eye?

  About 100 micrometers
• What is the resolution limit of an electron microscope?

  About 0.1 nanometers
• How do you convert centimeters to other units?

  • 1 cm = 10 mm
  • 1 m = 100 cm
  • To convert cm to m: divide by 100
  • To convert cm to mm: multiply by 10
• How do you convert 30 cm to nanometers?

  Multiply by 10, then by 1,000 twice
• What is the result of converting 30 cm to nanometers?

  300 million nanometers or $3 \times 10^{8} \text{ nanom}$
• What should you do if given centimeters in a question?

  • Multiply by 10 to convert to mm
  • Then convert to other units as needed
• Where can you practice questions on this topic?

  Link in the description or pinned comment