1%
It was processed successfully!
It was processed successfully!

# Amplitude Definition

Amplitude is the wave's height from resting point to peak, indicating energy. For example, louder sounds have higher amplitudes.

Preview Only
Oops! It looks like your security settings are blocking this video 🙁

If you are on a school computer or network, ask your tech person to whitelist these URLs:
*.wistia.com, fast.wistia.com, fast.wistia.net, embedwistia-a.akamaihd.net

Sometimes a simple refresh solves this issue. If you need further help, contact us.

## Wave Properties

### Fun Facts

• Turning up TV volume increases sound wave amplitude.
• The amplitude of a water wave is measured from the surface of calm water.
• Rock stars use electronics to increase sound wave amplitude.

### Why Do We Need To Know About Amplitude

Learning about amplitude helps us understand how sound and earthquake waves work. It’s important because it helps us know why sounds are loud or soft and how earthquakes can be strong or weak. For example, scientists studying dolphins learn how they use sound to find their way and talk to each other, focusing on how loud or soft those sounds are. People who study earthquakes look at how strong the waves are to help prepare for disasters and make buildings safer.

Amplitude also matters in everyday things like making music sound good in places like concert halls and in creating devices that play or record sound. Even in making and improving materials for technology and construction, knowing about how sound moves through different materials is key.

Do waves transfer matter?
Waves transfer energy, not matter.
When Zoe and Izzy demonstrated waves using the slinky, which type of wave did they observe?
Zoe and Izzy use the spring to demonstrate both transverse and longitudinal waves. Water waves are transverse waves and sound waves are longitudinal waves.
Why does the salt vibrate on the speaker when the music is turned on?
When the music is turned on sound waves cause the salt to vibrate just like sound waves cause air particles to vibrate.
Explore More Science Topics
Special Bonus: Get a \$5 Amazon gift card within 1 day if you join now. Only left.
X
Success
We’ve sent you an email with instructions how to reset your password.
Ok
x
3 Days

Continue to Lessons
30 Days

Get 30 days free by inviting other teachers to try it too.

Share with Teachers
Get 30 Days Free
By inviting 4 other teachers to try it too.
4 required

*only school emails accepted.

Skip, I will use a 3 day free trial

Thank You!

Enjoy your free 30 days trial