1. The sound waves then travel toward a flexible, oval membrane at the end of the ear canal called the eardrum, or tympanic membrane. 2. The sound waves move through each of these mediums by vibrating the molecules in the matter.
1. The middle ear is an air-filled cavity that turns sound waves into vibrations and delivers them to the inner ear. Sounds hit the eardrum, making it move. This movement leads to vibrations of three very small bones in the middle ear known as the ossicles
2. Sound waves need to travel through a medium such as solids, liquids and gases. The sound waves move through each of these mediums by vibrating the molecules in the matter. The molecules in solids are packed very tightly. Liquids are not packed as tightly.
In order to develop the muscles of the body evenly, it is important for all major muscle groups to be exercised. A weight-training program that only focuses on a select few areas of the body will neglect areas that are also important. To achieve optimal physical fitness, no single area of the body can be neglected for weight training.
