Sound Energy Surin Mrs. Giordano 5th grade What makes sound The - - PowerPoint PPT Presentation

Sound Energy

Surin

• Mrs. Giordano

5th grade

What makes sound

• The back and forth motion is

called a vibration, unless something vibrates, there can be no sound.

HOW SOUND IS PRODUCED

Vibrating Air Vibrating Reed Vibrating Surface Vibrating Strings

What is a sound wave?

• Sound wave is a vibration

that spreads away from a vibrating object.

• Compression is part of a

sound wave where molecules are crowded together.

• Rarefaction is part of a sound

wave where molecules are spread apart.

Sound can go through matter such as liquids, solids, and gases.

What can sound go through?

What is pitch?

• How high or loud a sound is
• The pitch on a string is related to its thickness
• Higher frequency equals higher pitch and lower

frequency equals lower pitch

What is volume?

• how loud or soft a sound is
• Higher energy equals louder sound and lower energy

equals softer sound

Reflection and Absorption

• The disappearance of a sound wave into a surface
• The bouncing of a sound wave off a surface

What is an echo?

• A reflected sound wave
• Sound can go through solids faster than gases

What is echolocation?

• The form of sonar

What is the Doppler Effect?

Apparent change in pitch as a source

• f sound moves toward or away from

you The siren is an example of the Doppler effect