Order of Magnitude

• What should you be able to describe by the end of the video?

  Order of magnitude
• Why do scientists use the concept of order of magnitude?

  To compare approximate sizes of different objects
• How many millimeters are in a meter?

  1,000 millimeters
• What does "one order of magnitude" mean?

  • One order of magnitude means 10 times larger.
• How do scientists describe the sizes of an apple and an orange?

  They are around the same order of magnitude
• How much larger is a pineapple compared to a small lemon?

  A pineapple is around 10 times larger
• How many orders of magnitude larger is a pineapple than a lemon?

  One order of magnitude
• How much longer is a dog compared to a woodlouse?

  A dog is around 100 times longer
• How many orders of magnitude longer is a dog than a woodlouse?

  Two orders of magnitude
• How can you determine the order of magnitude by counting zeros?

  • 10 times is one order of magnitude
  • 100 times is two orders of magnitude
  • 1,000 times is three orders of magnitude
• If a fox is 40 cm long and a tick is 0.4 cm long, how do you find how many orders of magnitude the fox is longer than the tick?

  Divide 40 by 0.4
• What is the result of dividing 40 by 0.4?

  100
• How many orders of magnitude longer is the fox than the tick?

  Two orders of magnitude
• What can you find in the version workbook mentioned in the video?

  • Plenty of questions on orders of magnitude
• What should you be able to do after watching the video?

  Carry out order of magnitude calculations