This paragraph describes what you need to do to make more sound come from a drum. Copy the paragraph into your workbook. Fill in the missing words.

here are the answers for the fill-in-the-blanks:

A. A coal stove

2. The input of energy for this stove is one bucket of coal. When the coal burns it makes enough heat to cook our food. It also makes the room warm. The output of energy for the stove is heat.

3. Drum

Beat the drum hard to make a loud sound. Beat it gently to make a quieter sound. The energy you need to beat the drum is the input of energy. The sound the drum makes is the output of energy.