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 "order of magnitude" indicate in terms of size comparison?

  • It shows how many times larger one object is than another.
  • Each order of magnitude is 10 times greater than the previous.
• 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
• What does one order of magnitude represent?

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

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

  Count the number of zeros in the size ratio
• 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?

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

  100
• How many zeros are in the number 100?

  Two zeros
• 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
  • Exercises for practicing calculations
• What should you be able to do by the end of the video regarding calculations?

  Carry out order of magnitude calculations