Activity 1 (Competency S7LT-IIId-7) Date: True or False: Directions: Answer the following either true or false. Write your answer on your answer sheet. Score:. (10 pts.) 1. Mechanical waves are waves that move through matter or empty space. 2. A wave in which the disturbance is perpendicular to the direction the wave travels is called a longitudinal wave. 3. The longer a wave's wavelength is, the lower its frequency will be. 4. The more energy a wave has, the smaller its amplitude will be. 5. When a wave changes direction as it moves from one medium to another, refraction Occurs. 6. Amplitude and Frequency affect the energy of a wave. 7. Radio raves require a medium to travel through 8. The greater the amplitude, the louder the sound. 9. Light is an example of a mechanical wave? 10. Sound waves, Water waves and Seismic Waves are examples of Mechanical wave.​