In which ear do you usually hear better?
Sound is a vibration of air that humans hear. The ear captures sound waves and converts them into nerve signals. Your brain interprets these signals as sounds.
Sound and Hearing
Frequency: The number of times a sound wave vibrates in one second. Decibels: A unit for measuring the loudness of sound. Hearing Loss: A decrease in the ability to hear.
What sounds do you like best?
- The sound of a thunderstorm
- The sound of birds chirping
- The sound of a waterfall
- The sound of an ocean wave
Sound travels 4.3 times faster through water than it does through air! The loudest sound ever recorded was an eruption of the Krakatoa volcano in 1883. It was heard 3,000 miles away! Adults typically hear sounds between 20 and 20,000 Hz!
Draw / write: How do our ears help us to hear sound?
Draw / write: What is the difference between sound and noise?
What types of sounds do you like to listen to?
What types of sounds can be harmful to our ears?