Question

1. choose the correct answer.

riding a roller coaster downhill is an example of what type of energy?
kinetic energy
potential energy

1. choose the correct answer.

in a ____ wave, energy moves up and down or side to side, across the direction the wave travels.
transverse
longitudinal

Explanation:

• For question 13: Kinetic energy is the energy of motion. When riding a roller - coaster downhill, the roller - coaster (and the rider) is in motion. Potential energy is the energy of position (e.g., at the top of a hill before moving).
• For question 14: In a transverse wave, the particle displacement is perpendicular to the direction of wave propagation (up - down or side - side relative to the wave's direction of travel). In a longitudinal wave, particle displacement is parallel to the direction of wave propagation.

Answer:

1. Kinetic energy
2. Transverse