Water Waves

Water Waves

Water Wave When you throw a stone into a calm lake, a circle of concentric waves is created and spreads around. The phenomenon that vibration created in one place spreads to the surroundings is called a … more

Sound pitch and volume

Sound pitch and volume

Height and loudness of the sound When we often say that a sound is ‘low’ or ‘high,’ we are referring to the height of the sound. The height of the sound is completely different from the … more