Experiment with the mega-fun of megaphones.
Use this activity to explore properties of sound with your child. Ask her to think about why, when you cup your hands around your mouth to shout, your voice is louder and can be heard farther away. Follow the directions below to create a megaphone with your child:
Talk with your child about what happened. Cupping your hands around your mouth, when speaking through the megaphone, your voice is louder and can be heard farther away. Explain to your child that sound travels in waves in all directions, and these waves get weaker the farther out they go. The megaphone aims the sound waves of your voice in one direction. These sound waves have lost less energy and sound louder when they arrive.