Answer:
7?
Step-by-step explanation:
Waves – disturbances caused by the movement of energy from a source through some medium. Floating Gull- Figure 10.1 – water is not moving – only the energy is moving through the water. Transfer of energy from water particle to water particle – circular path, an orbit Orbital waves – a wave in which particles of the medium (water) move in closed circles as the wave passes. ¾ These types of waves occur between fluids of different densities as well as between air/water. These waves are Progressive Waves – move forward through their medium. Parts of the wave: Wave Crest: highest Part of the wave Wave Trough: valley between wave crests Wave Period: time it takes for a wave to move a distance of one wave length. Wave Length: horizontal distance between two successive crests (or troughs) Wave Frequency: the number of waves that pass a fixed point per second Motion of the wave is negligible after ½ wavelength in depth Figure 10.3 indicates that water molecules in the crest of a passing wave move in the same direction as the wave, but molecules in the trough move in the opposite direction.