1. Sound
Write On
Grade 3

2. Learner Expectation Content Standard: 14.0 Energy
The student will investigate energy and its uses.
Learning Expectations:
14.2 Recognize that sound is produced when objects vibrate.

3. In this activity you will:
The learner will explain how sound is alike and different.
The learner will give three facts in a paragraph.

4. What Is Sound?
When matter vibrates or moves back and forth very quickly, sound is produced.
Example: When you hit a drum, parts of the drum will vibrate creating sound.

5. Volume is the loudness or the softness of a sound.
Example: The harder a drum is hit, the more the drum will vibrate . The more an object vibrates, the louder the sound it makes.

6. Pitch is the highest or lowest sound an object makes.
Objects that vibrate slowly, make a low pitch. Example-drum.
Objects that vibrate quickly, make a higher pitch. Example-recorder

7. Musical instruments make different sounds by plucking the strings.
The shorter the string, the quicker it vibrates producing a high sound.
The longer the string, the slower it vibrates producing a low sound.

8. Writing Activity
Write a paragraph using at least three facts about sound.