Dangerous Decibels

• Sound is measured in decibels 
• Sound is energy 
• A safe noise to be listening to headphones is 60 
• It is better to use headphones then ear plugs 
• Up to 85 decibels is safe
• 90-120 may begin hearing loss 
• 130 + can cause instant hearing loss 
• It is safe to be at a heavy metal rock concert for 0 seconds
• It is safe to be by firecracker for 0 seconds 
• It is safe to be a metre away from a bass drum for 0 seconds
• Load rock concert is safe to be there for 15 seconds 
• MP3 at peak volume and band practice is safe for 2 minutes 
• Motor cycle and power tools is safe for 15 minutes 
• Lawn mower is safe for 2 hours 
• Washing machine is safe forever 
• Food mixer is safe forever 
• Piano practice is safe forever 
• Rain is safe forever 
• The normal amount of noise is 85 which is the sound of cars driving 
• Load rock concert is 140 DB 
• Some things you can stay around forever and it won't affect your hearing 
• When you ruin your ears you can't fix them 
• You get hearing aides when the hair in your ears are ruined and turned weird ways