An Alien Clue: Discussion


Consider these points:

1. These aliens have a few things in common with us:

2. The range of sizes shown in the alien diagram is enormous!

3. If we could identify any one of the objects the aliens measured we could compare their measurement with ours and figure out how many meters in an alu.

Discuss the quiz with your neighbors; when you feel you've reached a conclusion press the A key on your clicker.

Question 1D.1


Please select one of the following:

  1. I can identify one of the objects on the alien chart.
  2. I can identify several objects on the alien chart.
  3. I can identify all of the objects on the alien chart.
  4. I'm not sure if I can identify any objects or not.
  5. I'm sure it's impossible to identify any objects.

Question 1D.2


Sizes of objects measured in meters

Here's the chart we constructed showing sizes of objects measured in meters. Compare it with the chart in the quiz, and try to decide if smallest object shown in the alien chart

  1. is a star
  2. is a planet
  3. is an atom
  4. is the nucleus of an atom
  5. can't be identified

Question 1D.3


Sizes of objects measured in meters

Now, using same chart as before, try to decide if the object in the alien chart with a size of 100 alu (= 1 alu)

  1. is a galaxy
  2. is a star
  3. is a planet
  4. is an atom
  5. can't be identified

Question 1D.4


Sizes of objects measured in meters

Finally, given your answer to the last question, how many meters in 1 alu?

  1. 103
  2. 106
  3. 109
  4. 1012
  5. can't be determined



Sizes of objects measured in meters
Sizes of objects measured in alu




Joshua E. Barnes (barnes@ifa.hawaii.edu)
Last modified: August 29, 2006
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