By: Martina D’Orazio, María Sol Scarpa, Abril
Travelling sounds: Sound waves travel more
slowly than do light waves. That is why we
see lighting before thunder is heard. Sounds
waves travel faster through solids than
through liquids, and faster at higher
When an object is allowed to vibrate freely
the sound made will continue for longer.
The outer ear acts funnel. It directs sound
waves to the eardrum. The sounds waves
make the eardrum vibrate. In the middle ear
the vibrations are transmitted along three
bones called hammer, the anvil and the
We shouldn’t listen to music so loud.
We have to protect our body of the causes of
The sounds of cars affect and contaminate us
and the environment.
The horn of firefighter cars cause Noise
Dora, Sol S. and Abril S.