CATCH A The Science Sound Waves Robin Johnson 2 Crabtree Publishing Company www Crabtreebooks com
SOUNDS ALL AROUND Have you heard about sound It is all around you Your alarm clock rings and jolts you out of bed in the morning The toaster dings and up pops your breakfast A loud bell calls you to school and later sends you home again Your parrot squawks a horn honks your smartphone buzzes and your music plays until it is time for bed You hear all sorts of sounds from morning to night but what is sound an TIME FOR SCHOOL SOUND IS ENERGY Sound is a form of energy Energy is the power to do work There are many other forms of energy on Earth Light is a form of energy that you can see Heat is a form of energy that you can feel Sound is energy that you can hear with your
SHARING INFORMATION Sounds help us send and receive messages The wail of a siren tells us a fire truck is on the way The whistle of a kettle tells us it is time for hot cocoa Sounds also help us communicate When people communicate they share ideas and information People communicate in all sorts of ways with spoken words They share stories whisper secrets and sing songs Think of all the sounds you hear each day What information do they give you How do you use sounds to communicate with others WITHOUT A WORD People also communicate without using any words at all You might sigh and tap your fingers when you are bored You might whistle when it is time for recess and groan when you get homework We can interpret the sounds people make to get information about them To interpret means to understand the meaning behind an action mood or
