cart Shopping Cart cart(0)

Coathanger gong experiment

You will need:

 
  • 1 Coat hanger 
  • 2 Pieces of string around 30cm in length

Instructions

  1. Tie the strings to the corners of the coat hanger.
  2. Hold the string in your hands so the coat hanger dangles downward.

    Coat hanger gong
     
  3. Gently knock the coat hanger on a hard surface - is the sound loud or soft?
  4. Wrap your fingers around each string and place your fingers in your ears.

    coat hanger gong in ear
     
  5. Repeat the experiment with your fingers in your ear. Does the sound get louder or softer? Why?
coat hanger gong

Sound is produced by vibrations. Vibrations travel faster through solids than they do through liquids or gases.
This is the reason why earthquakes can be detected hundreds of kilometres from their source. Find out how seismographs are used to detect earthquake vibrations at Geoscience Australia

Knocking the coathanger against the surface makes the coathanger vibrate. The vibrations travelled faster to your ear through the vibrating strings because they are solid. For more on the science of sound check out the external link at the Canada Science and Technology Museum.

Join our newsletter for more science teaching thoughts & ideas

Join the Fizzics newsletter

Back to light & sound science experiments

>100 Free Science Experiments on this site!

skeleton and student
  • Make fake blood & more!
  • Biology made simple
read more
 
electricity experiments
  • Circuit science for kids
  • Cheap materials found easily
read more
 
Vortex rings made with fog
  • Experiments using Newton's Laws
  • Step by step science
read more
 
Sugar and skittles dissolving in water experiment
  • Creative chemical concoctions!
  • Safe and engaging for kids
read more

School Science Visits: 

  • Highly engaging & curriculum-linked
  • Additional Teacher Support Resources
  • Professional visits in-class or via video conference
  • Both Primary School & High School science incursions
Call 1300 856 828 or use this form to discuss or make a show booking for your school!

Email updates

Signup to our monthly email Learn more
 

Contact us

1300 856 828
info@fizzicseducation.com.au

PO Box 272
Winston Hills, NSW, 2153, Australia
 
facebookgoogle plustwitter
linkedin youtube   ico6 pinterest