order of magnitude

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

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

  1,000 millimeters
• What does "order of magnitude" signify in scientific terms?

  • It shows how many times larger one object is compared to another.
  • Each order of magnitude is 10 times greater than the previous one.
• How do scientists describe the sizes of an apple and an orange?

  They say that these 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 than a small lemon
• What does one order of magnitude represent?

  10 times
• How many orders of magnitude longer is a dog compared to a woodlouse?

  A dog is two orders of magnitude longer than a woodlouse
• How can you determine the order of magnitude by counting zeros?

  By counting the number of zeros in the size comparison
• If you have a fox that is 40 cm long and a tick that is 0.4 cm long, how do you find out how many orders of magnitude the fox is longer than the tick?

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

  100
• How many zeros are there when comparing the lengths of the fox and the tick?

  Two zeros
• What is the conclusion about the fox's length compared to the tick's length?

  The fox is two orders of magnitude longer than the tick
• What should you be able to do after watching the video?

  • Describe what's meant by order of magnitude.
  • Carry out order of magnitude calculations.