Complete the following. 1. A low point of a wave is called a. 2. A crest is the of a wave. 3. When the particles of the medium move back and forth along the direction of the wave motion, the wave is a 4. When the particles of a medium are far apart, that part of the wave is called a 5. Compression is the part of the medium where particles are 6. A wave in which the particles of the medium move at right angles to the direction in which the wave travels is called a Skill Challenge Skills: labeling, interpreting a diagram, classifying Complete the following. A. 2. B. 2. 7. What type of wave is shown in Diagram A? 8. Label a crest and a trough on the wave in Diagram A. 9. What type of wave is shown in Diagram B? 10. Label a compression and a rarefaction on the wave in Diagram B