Sound Energy

Sound can be...

• heard

• touched

• seen

• felt

• smelt

Sound can be heard with...

• our ears

• our hands

• our eyes

• our nose

In this experiment:

• Vibrations move the thread (hilo), and arrives to the other cup. There, vibrations move the air in the cup producing sound.

• The thread (hilo) connects the cups, but does not move.

• Vibrations move through the thread (hilo), and arrives to the other cup. The other girl can hear because she is speaking very loudly.

When an object vibrates, it produces sound waves.

• TRUE

• WRONG

When an object vibrates, it produces heat, light and sound waves.

• TRUE

• WRONG

There is no sound in space. Why isn´t there any sound in space?

• Because sound needs a medium to move, and there is no matter in space.

• Because nobody is talking in space.

Sound need is an energy made by vibrations. It causes...

• heat waves

• sound waves

• colors waves

sound can travel in all directions.

• TRUE

• FALSE

• ONLY IN SPACE

Sound moves faster through...

• water

• air

• vacuum (vacío)

Sound can move in vacuum.

• FALSE

• TRUE