Sound is a form of energy created when matter vibrates. A vibration is back and forth movement.
The vibrations are passed through the air causing air molecules to vibrate. This results in waves of sound called sound waves.
Sound waves travel through the air until they reach the eardrum. The ear collects the sound waves and sends nerve impulses to the brain. The brain then interprets the sound you hear.
All sounds come from vibrating objects, such as the vocal cords in the human throat, the skin of a drum, or the strings of a violin. When an object stops vibrating, it is no longer making sound.
Sound waves must have matter to travel through because matter can vibrate. Different kinds of matter make different sounds.
Vibrations can travel through all states of matter. Sound travels best through solids. A sound travels through a solid such as glass or metal about fourteen times faster than it travels through dry air. Sound also travels better through liquids than gases.
Question 6 options:
false
true