Sound

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.