Question

1. what direction do longitudinal waves move in?

○ perpendicular to the force that created them
○ in the opposite direction of the force that created them
○ skew of the force that created them
○ in the same direction as the force that created them.

Explanation:

Longitudinal waves are characterized by particle displacement parallel to the wave's direction of propagation. This means the movement of the wave is in the same direction as the force (or disturbance) that initiated it. For example, in a sound wave (a common longitudinal wave), air molecules vibrate back - and - forth along the direction the sound travels.

• The option "Perpendicular to the force that created them" describes transverse waves (e.g., light waves, where the oscillation is perpendicular to the wave's direction).
• "In the opposite direction of the force that created them" is incorrect as there's no such general rule for wave direction relative to the creating force in this simple opposite - only sense for longitudinal waves.
• "Skew" is not a standard description for the direction relationship between longitudinal waves and the force creating them.

Answer:

In the same direction as the force that created them.