Question

sound waves are always:
select one:
seismic waves.
electromagnetic waves.
longitudinal waves.
transverse waves.

a transverse wave:
select one:
oscillates perpendicular to the direction of wave travel.
has enough energy to travel at least 5,000 kilometers.
oscillates in the same direction as the direction of wave travel.
lasts no longer than one minute.

Explanation:

• For the first question: Sound waves are longitudinal waves. Seismic waves are related to earthquakes. Electromagnetic waves (like light) are different from sound. Transverse waves have oscillations perpendicular to wave - travel (unlike sound).
• For the second question: By definition, a transverse wave oscillates perpendicular to the direction of wave travel. The other options about energy - distance, same - direction oscillation, and time - limit are incorrect for the definition of a transverse wave.

Answer:

• First question: longitudinal waves.
• Second question: oscillates perpendicular to the direction of wave travel.