SCIENCE 3

What is produced in all of these sample activities?

• vibration

• music

• Sound

It is a Form of energy made by vibrations

• Vibration

• Sound

• Music

How Do Sounds Travel in Solids, Liquids and Gases?

• Sounds travel fastest in gases, slower in solids, and slowest in liquids.
• Sounds travel at the same speed in all states of matter.
• Sounds travel fastest in solids, slower in liquids, and slowest in gases.

What are the sources of sound energy?

• Musical Instruments

• Voices of man and animals

• Car Horn

• Nature

• Electrical Devices

How do you practice safe listening? Give at least 3 ways.

Why do you think sound travels fastest in solids?

• Sound travels slowest in gases

  becausethe particles are widely

  spaced and have less efficient

  energy transfer.

• Sound travels faster in liquids

  than in Gases because the

  particles are more closely packed

  than in gases.

• Because the particles of solids

  are tightly packed and can

  vibrate and transmit sound

  energy quickly.

How do sounds travel in

Liquids and Gases?

• Sound travels fastest

  through solids.

• Sound travels faster in liquids

  than in Gases because the

  particles are more closely packed

  than in gases.

• Particles of solids

  are tightly packed and can

  vibrate and transmit sound

  energy quickly.

How Do We Use Sound Energy?

• Communicating with other

• Playing ball

• Sleeping on the bed

What are the things that produce soft sound?

• loud thunder
• screaming sirens
• rustling leaves

What are the things that produce hard sound?

• Wooden objects
• Plastic containers
• Metal objects