Discover how exposure to high-volume sounds can damage hearing. Physical processes - Sound - Dangers of sound Learning Points High volume sounds can damage ears and cause hearing loss. Sound levels are measured in decibels. Ear damage can be prevented by reducing volume or the use of protective equipment. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.