Run the light gates

Exercise and reference answers

Questions

1. Correct

   Longer

   Choices

   1. Longer
   2. Shorter
   3. Equal

2. Correct

   Shorter

   Choices

   1. Longer
   2. Shorter
   3. Equal

3. Correct

   Hotter

   Choices

   1. Hotter
   2. Cooler
   3. Same

4. Correct

   Redshift

   Choices

   1. Redshift
   2. Blueshift
   3. No shift

5. Correct

   Blueshift

   Choices

   1. Redshift
   2. Blueshift
   3. No shift

6. Correct

   Emission

   Choices

   1. Absorption
   2. Emission
   3. Neither

Instructions

Pick the correct answer at every gate.

Explanation