Sound

Write On Grade 3

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.

In this activity you will:

The learner will explain how sound is alike and different.

The learner will give three facts in a paragraph.

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.

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.

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

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.

Writing Activity

Write a paragraph using at least three facts about sound.