Also inform students that hydroelectric power is generated by water. Demonstrate various sounds by making a shaker with 1 liter plastic bottle. Place matter such as peas, beans, pasta, beads, and buttons into the bottle and screw the cap on the bottle and shake it. Have students explain what causes sound and why they are getting different types of sound. Explain to the students that anything that vibrates makes sound.
Vibrations can travel through water, glass, brick, concrete and other substances.
When the vibrating air reaches your ear, it makes the eardrum move in and out, and this is why you hear sound. Part of the assessment is the student's responses during the discussions. A quiz to test their knowledge of the states of matter and their uses. Finding, Out About Solids, Liquids, and Gases Westchester, Il Branley, Franklin. Air Is All Around You New York Cleaves, Janice Van.