Multiple choice

Directions: Fill in the blank with the most appropriate ption.

Although thunder and lightning are produced at the same time, light waves travel faster _____, so we see the lightning before we hear the thunder.

  1. than sound waves do

  2. than sound waves are

  3. than are sound waves

  4. than sound waves ever have

  5. than do sound waves

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

X travels faster than Y or 'Y does'.