ASVAB General Science Practice Test 794976

Question 1 of 5
Light Waves

Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.

Which of the following is not true of light waves?

are electromagnetic waves

can travel through a vacuum

travel faster than sound waves

are mechanical waves